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156 results on '"O. A. Gress"'

1. Three-stage Collapse of the Long Gamma-Ray Burst from GRB 160625B Prompt Multiwavelength Observations

Author: V. M. Lipunov, V. A. Sadovnichy, M. I. Panasyuk, I. V. Yashin, S. I. Svertilov, S. G. Simakov, D. Svinkin, E. Gorbovskoy, G. V. Lipunova, V. G. Kornilov, D. Frederiks, V. Topolev, R. Rebolo, M. Serra, N. Tiurina, E. Minkina, V. V. Bogomolov, A. V. Bogomolov, A. F. Iyudin, A. Chasovnikov, A. Gabovich, A. Tsvetkova, N. M. Budnev, O. A. Gress, G. Antipov, I. Gorbunov, D. Vlasenko, P. Balanutsa, R. Podesta, K. Zhirkov, A. Kuznetsov, V. Vladimirov, F. Podesta, C. Francile, Yu. Sergienko, A. Tlatov, O. Ershova, D. Cheryasov, V. Yurkov, and A. V. Krylov
Subjects: Gamma-ray bursts, Black holes, Neutron stars, Astrophysics, QB460-466
Abstract: This article presents the early results of synchronous multiwavelength observations of one of the brightest gamma-ray bursts (GRBs) GRB 160625B with the detailed continuous fast optical photometry of its optical counterpart obtained by MASTER and with hard X-ray and gamma-ray emission, obtained by the Lomonosov and Konus-Wind spacecraft. The detailed photometry led us to detect the quasi-periodical emission components in the intrinsic optical emission. As a result of our analysis of synchronous multiwavelength observations, we propose a three-stage collapse scenario for this long and bright GRB. We suggest that quasiperiodic fluctuations may be associated with forced precession of a self-gravitating rapidly rotating superdense body (spinar), whose evolution is determined by a powerful magnetic field. The spinar’s mass allows it to collapse into a black hole at the end of evolution.
Published: 2023
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2. Early optical observations of seven gamma-ray bursts in comparison to their gamma X-ray characteristics in the MSU MASTER Global Robotic Telescopes Net

Author: V. M. Lipunov, N. V. Tyurina, V. G. Kornilov, E. S. Gorbovskoy, V. V. Vladimirov, A. S. Kuznetzov, P. V. Balanutsa, D. S. Zimnukhov, V. V. Chazov, D. M. Vlasenko, A. G. Tlatov, V. A. Senik, O. A. Ershova, O. A. Gress, N. M. Budnev, S. A. Yazev, O. B. Chvalaev, V. A. Poleshchuk, Yu. V. Ishmuhametova, V. V. Yurkov, A. V. Gabovich, Yu. P. Sergienko, R. Podesta, C. Lopez, F. Podesta, H. Levato, R. R. Lopez, M. Serra-Ricart, N. Lodieu, G. Israelian, L. Suarez-Andrez, and D. Buckley
Subjects: gamma-ray bursts, master robotic telescopes net, observations of gamma-ray bursts in the visible range, the effect of gamma-ray bursts on the biosphere of the earth, gamma-ray bursts as a possible cause of extinction, Science
Abstract: Seven gamma-ray bursts – GRB 130907A, GRB 140311B, GRB 140129B, GRB 160227A, GRB 120404A, GRB 110801A, and GRB 120811C were observed by the MSU MASTER (Mobile Astronomical System of TElescope Robots) Global Network. Full automation of the observations provided for obtaining unique data on the properties of early optical radiation accompanying gamma-ray bursts. The data are compared in the optical (MASTER), X-ray (SWIFT X-ray Telescope, XRT) and gamma (SWIFT Burst Alert Telescope, BAT) ranges. Based on the data obtained, two groups are identified, and their radiation mechanisms are revealed. The effect of gamma-ray bursts on the biosphere of the Earth is determined, and the estimates and the scale of such an effect are considered.
Published: 2019
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3. Strategy and Results of MASTER Network Follow-Up Observations of LIGO and Virgo Gravitational Wave Events within the Observational Sets O1, O2, and O3

Author: V. Lipunov, V. Kornilov, E. Gorbovskoy, N. Tyurina, D. Vlasenko, P. Balanutsa, A. Kuznetsov, O. A. Gress, K. Zhirkov, A. Chasovnikov, V. Topolev, V. Senik, K. Francile, F. Podesta, R. Podesta, D. Buckley, R. Rebolo, M. Serra, N. M. Budnev, A. Tlatov, Ya. Kechin, Yu. Tselik, V. Yurkov, A. Gabovich, D. Dormidontov, D. Kuvshinov, E. Minkina, O. Ershova, D. Cheryasov, and V. Vladimirov
Subjects: Space and Planetary Science, Astronomy and Astrophysics
Published: 2022
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4. The First Detection of an Orphan Burst at the Rise Phase

Author: V. M. Lipunov, V. G. Kornilov, V. V. Topolev, N. V. Tyurina, E. S. Gorbovskoy, S. G. Simakov, K. K. Zhirkov, D. S. Vlasenko, C. Francile, R. Podesta, F. Podesta, D. S. Svinkin, N. M. Budnev, P. V. Balanutsa, D. V. Cheryasov, A. R. Chasovnikov, R. Rebolo, M. Serra-Ricart, O. A. Gress, O. A. Ershova, V. V. Yurkov, A. S. Gabovich, A. G. Tlatov, E. M. Minkina, V. V. Vladimirov, A. S. Kuznetsov, G. A. Antipov, S. I. Svertilov, Yu. Tselik, and Ya. Kechin
Subjects: Space and Planetary Science, Astronomy and Astrophysics
Published: 2022
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5. Towards the Tunka-Rex Virtual Observatory.

Author: P. A. Bezyazeekov, N. M. Budnev, Oleg L. Fedorov, O. A. Gress, O. Grishin, Andreas Haungs, T. Huege, Y. A. Kazarina, M. Kleifges, Dmitriy Kostunin, Elena Korosteleva, L. A. Kuzmichev, V. Lenok, N. Lubsandorzhiev, S. Malakhov, T. Marshalkina, R. Monkhoev, E. Osipova, A. Pakhorukov, L. Pankov, V. V. Prosin, F. G. Schröder, D. A. Shipilov, and A. Zagorodnikov
Published: 2019

6. Astroclimate of the High Mountain Plains of the Greater Altai, According to Satellite Remote Sensing Data: Potential for Deploying a Full-Scale Gamma Astronomy Experiment

Author: E. Yu. Mordvin, N. V. Volkov, A. I. Revyakin, R. Togoo, I. I. Astapov, P. A. Bezyazeekov, M. Blank, E. A. Bonvech, A. N. Borodin, M. Bruchner, N. M. Budnev, A. Bulan, A. Vaidyanathan, R. Wischnewski, P. A. Volchugov, D. M. Voronin, A. Yu. Garmash, A. R. Gafarov, V. M. Grebenyuk, O. A. Gress, T. I. Gress, A. A. Grinyuk, O. G. Grishin, A. N. Dyachok, D. P. Zhurov, A. V. Zagorodnikov, A. L. Ivanova, N. N. Kalmykov, V. V. Kindin, S. N. Kiryuhin, R. P. Kokoulin, K. G. Kompaniets, E. E. Korosteleva, V. A. Kozhin, E. A. Kravchenko, A. P. Kryukov, L. A. Kuzmichev, A. Chiavassa, A. A. Lagutin, Yu. E. Lemeshev, B. K. Lubsandorzhiev, N. B. Lubsandorzhiev, R. R. Mirgazov, R. Mirzoyan, R. D. Monkhoev, E. A. Osipova, A. L. Pakhorukov, A. Pan, M. I. Panasyuk, L. V. Pankov, A. A. Petrukhin, D. A. Podgrudkov, V. A. Poleschuk, M. Popescu, E. G. Popova, A. Porelli, E. B. Postnikov, V. V. Prosin, V. S. Ptuskin, A. A. Pushnin, R. I. Raikin, G. I. Rubtsov, E. V. Ryabov, Y. I. Sagan, V. S. Samoliga, L. G. Sveshnikova, A. A. Silaev, A. Yu. Sidorenkov, A. V. Skurikhin, M. Slunecka, A. V. Sokolov, Ya. V. Suvorkin, V. A. Tabolenko, A. B. Tanaev, B. A. Tarashansky, M. Yu. Ternovoy, L. G. Tkachev, M. Tluczykont, N. A. Ushakov, D. Horns, D. V. Chernov, and I. I. Yashin
Subjects: General Physics and Astronomy
Published: 2022
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7. Energy Spectrum of Primary Cosmic Rays According to the Data of the TAIGA Astrophysical Complex

Author: V. V. Prosin, I. I. Astapov, P. A. Bezyazeekov, E. A. Bonvech, A. N. Borodin, N. M. Budnev, A. V. Bulan, D. V. Chernov, A. Chiavassa, A. N. Dyachok, A. R. Gafarov, A. Yu. Garmash, V. M. Grebenyuk, E. O. Gress, O. A. Gress, T. I. Gress, A. A. Grinyuk, O. G. Grishin, M. A. Iliushin, A. D. Ivanova, A. L. Ivanova, N. N. Kalmykov, V. V. Kindin, S. N. Kiryuhin, R. P. Kokoulin, N. I. Kolosov, K. G. Kompaniets, E. E. Korosteleva, V. A. Kozhin, E. A. Kravchenko, A. P. Kryukov, L. A. Kuzmichev, A. A. Lagutin, M. V. Lavrova, Yu. E. Lemeshev, B. K. Lubsandorzhiev, N. B. Lubsandorzhiev, S. D. Malakhov, R. R. Mirgazov, R. A. Monkhoev, E. A. Okuneva, E. A. Osipova, A. L. Pakhorukov, A. Pan, A. D. Panov, L. V. Pankov, A. A. Petrukhin, D. A. Podgrudkov, E. G. Popova, E. B. Postnikov, V. S. Ptuskin, A. A. Pushnin, R. I. Raikin, A. V. Razumov, E. V. Rjabov, G. I. Rubtsov, V. S. Samoliga, I. Satyshev, A. Yu. Sidorenkov, A. A. Silaev, A. V. Skurikhin, A. V. Sokolov, L. G. Sveshnikova, V. A. Tabolenko, A. B. Tanaev, B. A. Tarashansky, M. Yu. Ternovoy, L. G. Tkachev, N. A. Ushakov, A. Vaidyanathan, N. V. Volkov, P. A. Volchugov, D. M. Voronin, I. I. Yashin, A. V. Zagorodnikov, and D. P. Zhurov
Subjects: General Physics and Astronomy
Published: 2023
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8. Multiwavelength observations of GRB160625B by MASTER, Lomonosov, Konus-Wind and three stage collapse

Author: V. M. Lipunov, V. A. Sadovnichy, M. I. Panasyuk, I. V. Yashin, S. I. Svertilov, D. Svinkin, E. Gorbovskoy, S. G. Simakov, G. V. Lipunova, V. G. Kornilov, D. Frederiks, V. Topolev, R. Rebolo, M. Serra, N. Tiurina, E. Minkina, V. V. Bogomolov, A. V. Bogomolov, A. F. Iyudin, A. Chasovnikov, A. Gabovich, N.M. Budnev, O. A. Gress, G. Antipov, D. Vlasenko, P. Balanutsa, R. Podesta, K. Zhirkov, A. Kuznetsov, V. Vladimirov, F. Podesta, C. Francile, Yu. Sergienko, A. Tlatov, O. Ershova, D. Cheryasov, and V. Yurkov
Published: 2023
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9. MASTER optical observations of the blazar TXS0506+056 during the IC170922A

Author: V. M. Lipunov, K. Zhirkov, V. G. Kornilov, E. Gorbovskoy, N. M. Budnev, D. A. H. Buckley, R. Rebolo, M. Serra, R. Podesta, C. Francile, V. Topolev, N. Tiurina, O. A. Gress, P. Balanutsa, A. Chasovnikov, D. Vlasenko, E. Minkina, A. Gabovich, G. Antipov, A. Kuznetsov, V. Vladimirov, S. Svertilov, F. Podesta, V. Grinshpun, A. Tlatov, D. Cheryasov, and V. Senik
Published: 2023
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10. Signal recognition and background suppression by matched filters and neural networks for Tunka-Rex.

Author: D. A. Shipilov, P. A. Bezyazeekov, N. M. Budnev, D. Chernykh, Oleg L. Fedorov, O. A. Gress, Andreas Haungs, R. Hiller, T. Huege, Yulia Kazarina, M. Kleifges, Elena Korosteleva, Dmitriy Kostunin, L. A. Kuzmichev, V. Lenok, N. Lubsandorzhiev, T. Marshalkina, R. Monkhoev, E. Osipova, A. Pakhorukov, L. Pankov, V. V. Prosin, F. G. Schröder, and A. Zagorodnikov
Published: 2018

11. Cosmic Ray Study at the Astrophysical Complex TAIGA: Results and Plans

Author: L. A. Kuzmichev, I. I. Astapov, P. A. Bezyazeekov, M. Blank, E. A. Bonvech, A. N. Borodin, M. Brueckner, N. M. Budnev, A. V. Bulan, D. V. Chernov, A. Chiavassa, A. N. Dyachok, A. R. Gafarov, A. Yu. Garmash, V. M. Grebenyuk, O. A. Gress, T. I. Gress, A. A. Grinyuk, O. G. Grishin, D. Horns, A. L. Ivanova, N. N. Kalmykov, V. V. Kindin, S. N. Kiryuhin, R. P. Kokoulin, K. G. Kompaniets, E. E. Korosteleva, V. A. Kozhin, E. A. Kravchenko, A. P. Kryukov, A. A. Lagutin, M. V. Lavrova, Yu. Lemeshev, B. K. Lubsandorzhiev, N. B. Lubsandorzhiev, A. D. Lukanov, D. Lukyantsev, R. R. Mirgazov, R. Mirzoyan, R. D. Monkhoev, E. A. Osipova, A. L. Pakhorukov, A. Pan, L. V. Pankov, A. D. Panov, A. A. Petrukhin, D. A. Podgrudkov, V. A. Poleschuk, E. G. Popova, A. Porelli, E. B. Postnikov, V. V. Prosin, V. S. Ptuskin, A. A. Pushnin, R. I. Raikin, A. Razumov, E. Rjabov, G. I. Rubtsov, Y. I. Sagan, V. S. Samoliga, A. Yu. Sidorenkov, A. A. Silaev, A. V. Skurikhin, M. Slunecka, A. V. Sokolov, Y. Suvorkin, L. G. Sveshnikova, V. A. Tabolenko, A. B. Tanaev, B. A. Tarashansky, M. Ternovoy, L. G. Tkachev, M. Tluczykont, N. Ushakov, A. Vaidyanathan, P. A. Volchugov, N. V. Volkov, D. Voronin, R. Wischnewski, I. I. Yashin, A. V. Zagorodnikov, and D. P. Zhurov
Subjects: Nuclear and High Energy Physics, Atomic and Molecular Physics, and Optics
Published: 2021
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12. Detecting Gamma Rays with Energies Greater than 3–4 ТeV from the Crab Nebula and Blazar Markarian 421 by Imaging Atmospheric Cherenkov Telescopes in the TAIGA Experiment

Author: L. G. Sveshnikova, I. I. Astapov, P. A. Bezyazeekov, M. Blank, A. N. Borodin, M. Brückner, N. M. Budnev, A. Bulan, A. Vaidyanathan, R. Wischnewski, P. Volchugov, D. Voronin, A. R. Gafarov, A. Yu. Garmash, V. M. Grebenyuk, O. A. Gress, T. I. Gress, A. A. Grinyuk, O. G. Grishin, A. N. Dyachok, D. P. Zhurov, A. V. Zagorodnikov, A. L. Ivanova, N. N. Kalmykov, V. V. Kindin, S. N. Kiryukhin, V. A. Kozhin, R. P. Kokoulin, K. G. Kompaniets, E. E. Korosteleva, E. A. Kravchenko, A. P. Kryukov, L. A. Kuzmichev, A. Chiavassa, M. Lavrova, A. A. Lagutin, Yu. Lemeshev, B. K. Lubsandorzhiev, N. B. Lubsandorzhiev, R. R. Mirgazov, R. Mirzoyan, R. D. Monkhoev, E. A. Osipova, A. Pan, M. I. Panasyuk, L. V. Pankov, A. L. Pakhorukov, A. A. Petrukhin, V. A. Poleschuk, M. Popesku, E. G. Popova, A. Porelli, E. B. Postnikov, V. V. Prosin, V. S. Ptuskin, A. A. Pushnin, R. I. Raikin, G. I. Rubtsov, E. V. Rjabov, Ya. I. Sagan, V. S. Samoliga, A. Yu. Sidorenkov, A. A. Silaev, A. V. Skurikhin, M. Slunecka, A. V. Sokolov, Ya. Suvorkin, V. A. Tabolenko, A. Tanaev, B. A. Tarashansky, M. Ternovoy, L. G. Tkachev, M. Tluczykont, N. Ushakov, D. Horns, and I. I. Yashin
Subjects: 010302 applied physics, 010308 nuclear & particles physics, 0103 physical sciences, General Physics and Astronomy, 01 natural sciences
Published: 2021
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13. First Results from Operating a Prototype Wide-Angle Telescope for the TAIGA Installation

Author: D. A. Podgrudkov, E. A. Bonvech, I. V. Vaiman, D. V. Chernov, I. I. Astapov, P. A. Bezyazeekov, M. Blank, A. N. Borodin, M. Brückner, N. M. Budnev, A. V. Bulan, A. Vaidyanathan, R. Wischnewski, P. A. Volchugov, D. M. Voronin, A. R. Gafarov, O. A. Gress, T. I. Gress, O. G. Grishin, A. Yu. Garmashi, V. M. Grebenyuk, A. V. Grinyuk, A. N. Dyachok, D. P. Zhurov, A. V. Zagorodnikov, A. L. Ivanova, N. N. Kalmykov, V. V. Kindin, S. N. Kiryuhin, R. L. Kokoulin, K. G. Kompaniets, E. E. Korosteleva, V. A. Kozhin, E. A. Kravchenko, A. P. Kryukov, L. A. Kuzmichev, A. Chiavassa, M. Lavrova, A. A. Lagutin, Yu. E. Lemeshev, B. K. Lubsandorzhiev, N. B. Lubsandorzhiev, R. R. Mirgazov, R. Mirzoyan, R. D. Monkhoev, E. A. Osipova, A. L. Pakhorukov, A. Pan, M. I. Panasyuk, L. V. Pankov, A. A. Petrukhin, V. A. Poleschuk, M. Popesku, E. G. Popova, A. Porelli, E. B. Postnikov, V. V. Prosin, V. S. Ptuskin, A. A. Pushnin, R. I. Raikin, G. I. Rubtsov, E. V. Ryabov, Ya. I. Sagan, V. S. Samoliga, A. A. Silaev, A. Yu. Sidorenkov, A. V. Skurikhin, M. Slunecka, A. V. Sokolov, L. G. Sveshnikova, Ya. V. Suvorkin, V. A. Tabolenko, A. V. Tanaev, B. A. Tarashansky, M. Yu. Ternovoy, L. G. Tkachev, M. Tluczykont, N. A. Ushakov, D. Horns, and I. V. Yashin
Subjects: 010302 applied physics, 010308 nuclear & particles physics, 0103 physical sciences, General Physics and Astronomy, 01 natural sciences
Published: 2021
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14. Experimental Complex TAIGA

Author: N. Ushakov, N. B. Lubsandorzhiev, E. A. Kravchenko, Yu. Lemeshev, D. Chernykh, E. E. Korosteleva, Anatoly Lagutin, L. V. Pankov, A. Garmash, R. P. Kokoulin, A. V. Skurikhin, P. Volchugov, Andrey Sokolov, V. V. Prosin, D. A. Podgrudkov, A. L. Pakhorukov, Dmitry Chernov, M. Blank, A. Tanaev, L. G. Sveshnikova, L. G. Tkachev, E. A. Osipova, M. Slunechka, V.A. Tabolenko, Dieter Horns, M. Tluczykont, R. D. Monkhoev, I. I. Astapov, E. Popova, A. Chiavassa, A. Pushnin, M. Ternovoy, I. I. Yashin, A. N. Dyachok, Grigory Rubtsov, P. Bezyazykov, N. N. Kalmykov, D. Shipilov, M. Popesku, A. A. Petrukhin, A. Ivanova, Alexander Kryukov, Y. Sagan, A. Sidorenkov, Evgenii V Rjabov, V. Poleshchuk, D. Voronin, V. S. Ptuskin, Roman Raikin, B. A. Tarashchansky, Mikhail Panasyuk, O. A. Gress, V. Kiryukhin, A. Bulan, A. A. Grinyuk, V. A. Kozhin, V. V. Kindin, T. I. Gress, M. Brückner, R. R. Mirgazov, A. Pan, V. Samoliga, A. Vaidyanathan, Y. Kazarina, Oleg Fedorov, Dmitry Zhurov, A. Borodin, R. Mirzoyan, A. Porelli, A. Bonvech, K. G. Kompaniets, O. Grishin, Evgeny Postnikov, Aleksandr Gafarov, A. A. Silaev, A. V. Zagorodnikov, Bayarto Lubsandorzhiev, Y. Suvorkin, L. A. Kuzmichev, V. M. Grebenyuk, and R. Wischnewski
Subjects: Physics, Nuclear and High Energy Physics, 010308 nuclear & particles physics, 0103 physical sciences, Taiga, Astronomy, 010306 general physics, 01 natural sciences, Atomic and Molecular Physics, and Optics, Cherenkov radiation
Abstract: The astrophysical complex TAIGA (Tunka Advanced Instrument for cosmic-ray physics and Gamma-ray Astronomy), whose first phase is being completed in the Tunka valley 50 km from Lake Baikal, is described. Its research program, first results, and development prospects are discussed.
Published: 2020
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15. Status of the TAIGA Experiment: From Cosmic-Ray Physics to Gamma Astronomy in Tunka Valley

Author: Dmitry Chernov, A. V. Skurikhin, Andrey Sokolov, M. Slunecka, Grigory Rubtsov, N. N. Kalmykov, B. A. Tarashchansky, D. A. Podgrudkov, V. A. Poleschuk, Y. Suvorkin, P. Volchugov, A. L. Pakhorukov, Dieter Horns, N. M. Budnev, A. Tanaev, Roman Raikin, A. N. Dyachok, M. Tluczykont, A. A. Grinyuk, R. R. Mirgazov, A. Haungs, Evgeny Postnikov, N. B. Lubsandorzhiev, A. Pan, T. Marshalkina, Oleg Fedorov, V. Samoliga, V. S. Ptuskin, M. Kleifges, A. Chiavassa, Y. Sagan, R. Mirzoyan, A. Porelli, M. Brueckner, N. Ushakov, T. I. Gress, A. Borodin, V. Lenok, Aleksandr Gafarov, R. Togoo, A. Garmash, Dmitry Zhurov, A. A. Silaev, D. Kostyunin, L. G. Tkachev, A. V. Zagorodnikov, E. A. Osipova, V. Kiryuhin, E. V. Ryabov, Pavel Bezyazeekov, O. G. Grishin, D. Shipilov, A. Ivanova, E. Popova, O. A. Gress, L. G. Sveshnikova, A. Vaidyanathan, L. V. Pankov, B. K. Lubsandorzhiev, V. A. Kozhin, V. V. Kindin, M. Ternovoy, L. A. Kuzmichev, V. M. Grebenyuk, I. I. Astapov, R. Wischnewski, Mikhail Panasyuk, Frank G. Schröder, A. Pushnin, A. Bulan, A. Bonvech, K. G. Kompaniets, D. Voronin, V.A. Tabolenko, E. A. Kravchenko, D. Chernykh, E. E. Korosteleva, S. Malakhov, R. P. Kokoulin, A. A. Petrukhin, Yulia Kazarina, Ig. Yashin, Yu. Lemeshev, V. V. Prosin, Anatoly Lagutin, T. Huege, R. D. Monkhoev, Alexander Kryukov, and A. Sidorenkov
Subjects: Physics, Nuclear and High Energy Physics, 010308 nuclear & particles physics, Observatory, 0103 physical sciences, Taiga, Astronomy, Cosmic ray, Radiation, 010306 general physics, Hybrid approach, 01 natural sciences, Atomic and Molecular Physics, and Optics
Abstract: The importance and advantages of the hybrid approach developed within the TAIGA project for studying the high-energy section of the spectrum of gamma radiation in the Universe are discussed. The pilot complex of the TAIGA gamma observatory with an area of 1 km $${}^{2}$$ is briefly described along with the lines of its development, and the first results obtained on this basis are given.
Published: 2020
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16. Gamma/Hadron Separation for a Ground Based IACT in Experiment TAIGA Using Machine Learning Methods

Author: Maria Vasyutina, L. Sveshnikova, I. I. Astapov, P. A. Bezyazeekov, M. Blank, E. A. Bonvech, A. N. Borodin, M. Brueckner, N. M. Budnev, A. V. Bulan, D. V. Chernov, A. Chiavassa, A. N. Dyachok, A. R. Gafarov, A. Yu. Garmash, V. M. Grebenyuk, O. A. Gress, T. I. Gress, A. A. Grinyuk, O. G. Grishin, Dieter Horns, A. L. Ivanova, N. N. Kalmykov, V. V. Kindin, S. N. Kiryuhin, R. P. Kokoulin, K. G. Kompaniets, E. E. Korosteleva, V. A. Kozhin, E. A. Kravchenko, A. P. Kryukov, L. A. Kuzmichev, A. A. Lagutin, M. V. Lavrova, Yu. Lemeshev, B. K. Lubsandorzhiev, N. B. Lubsandorzhiev, A. D. Lukanov, D. Lukyantsev, R. R. Mirgazov, R. Mirzoyan, R. D. Monkhoev, E. A. Osipova, A. L. Pakhorukov, L. A. Panasenko, A. Pan, L. V. Pankov, A. D. Panov, A. A. Petrukhin, D. A. Podgrudkov, V. A. Poleschuk, M. Popesku, E. G. Popova, A. Porelli, E. B. Postnikov, V. V. Prosin, V. S. Ptuskin, A. A. Pushnin, R. I. Raikin 𝑗, A. Razumov, E. Rjabov, G. I. Rubtsov, Y. I. Sagan, V. S. Samoliga, Andrei Sidorenkov, A. A. Silaev, A. A. Silaev jr, A. V. Skurikhin, M. Slunecka, A. V. Sokolov, Y. Suvorkin, V. A. Tabolenko, A. B. Tanaev, B. A. Tarashansky, M. Ternovoy, L. G. Tkachev, M. Tluczykont, N. Ushakov, A. Vaidyanathan, P. A. Volchugov, N. V. Volkov, D. Voronin, R. Wischnewski, I. I. Yashin, A. V. Zagorodnikov, and D. P. Zhurov
Subjects: Computer science, Hadron, Taiga, Separation (aeronautics), IACT, Random forest, Remote sensing
Published: 2021
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17. Depth of the Maximum of Extensive Air Showers (EASes) and the Mean Mass Composition of Primary Cosmic Rays in the 1015–1018 eV Range of Energies, According to Data from the TUNKA-133 and TAIGA-HiSCORE Arrays for Detecting EAS Cherenkov Light in the Tunkinsk Valley

Author: V. V. Prosin, I. I. Astapov, P. A. Bezyazeekov, A. N. Borodin, M. Brückner, N. M. Budnev, A. Bulan, A. Vaidyanathan, R. Wischnewski, P. Volchugov, D. Voronin, A. R. Gafarov, A. Yu. Garmash, V. M. Grebenyuk, O. A. Gress, T. I. Gress, A. A. Grinyuk, O. G. Grishin, A. N. Dyachok, D. P. Zhurov, A. V. Zagorodnikov, A. L. Ivanova, N. N. Kalmykov, V. V. Kindin, S. N. Kiryuhin, V. A. Kozhin, R. P. Kokoulin, K. G. Kompaniets, E. E. Korosteleva, E. A. Kravchenko, A. P. Kryukov, L. A. Kuzmichev, A. Chiavassa, M. Lavrova, A. A. Lagutin, Yu. Lemeshev, B. K. Lubsandorzhiev, N. B. Lubsandorzhiev, R. R. Mirgazov, R. Mirzoyan, R. D. Monkhoev, E. A. Osipova, A. Pan, M. I. Panasyuk, L. V. Pankov, A. L. Pakhorukov, A. A. Petrukhin, V. A. Poleschuk, M. Popesku, E. G. Popova, A. Porelli, E. B. Postnikov, V. S. Ptuskin, A. A. Pushnin, R. I. Raikin, G. I. Rubtsov, E. V. Ryabov, Ya. I. Sagan, V. S. Samoliga, L. G. Sveshnikova, A. Yu. Sidorenkov, A. A. Silaev, A. V. Skurikhin, M. Slunecka, A. V. Sokolov, Y. Suvorkin, V. A. Tabolenko, A. Tanaev, B. A. Tarashansky, M. Ternovoy, L. G. Tkachev, M. Tluczykont, N. Ushakov, D. Horns, and I. I. Yashin
Subjects: 010302 applied physics, 010308 nuclear & particles physics, 0103 physical sciences, General Physics and Astronomy, 01 natural sciences
Published: 2021
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18. Early Optical Observations of Gamma-Ray Bursts Compared with Their Gamma- and X-Ray Characteristics Using a MASTER Global Network of Robotic Telescopes from Lomonosov Moscow State University

Author: H. Levato, E. S. Gorbovskoy, Carlos E. Lopez, V. M. Lipunov, K. Zhirkov, C. Francile, V. Vladimirov, A. Chasovnikov, O. A. Gress, N. V. Tyurina, R. Rebolo, V. G. Kornilov, C. Mallamaci, F. Balakin, V. Senik, Miquel Serra-Ricart, F. Podesta, R. Podesta, D. S. Zimnukhov, V. Grinshpun, D. Buckley, A. Gabovich, S. Yazev, A. Pozdnyakov, A. Kuznetsov, D. Kuvshinov, V. Yurkov, O. Ershova, A. G. Tlatov, D. Vlasenko, N. M. Budnev, V. Topolev, and P. Balanutsa
Subjects: Physics, Space and Planetary Science, X-ray, Astronomy and Astrophysics, State (functional analysis), Astrophysics, Gamma-ray burst
Published: 2020
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19. The MASTER Global Robotic Telescope Network: Observations of Asteroid NEA 2015 TB145

Author: D. S. Zimnukhov, V. M. Lipunov, E. S. Gorbovskoy, V. G. Kornilov, N. V. Tyurina, V. V. Chazov, A. V. Gabovich, P. V. Balanutsa, V. V. Vladimirov, O. A. Gress, A. S. Kuznetsov, R. Rebolo Lopez, M. Serra-Ricart, V. V. Yurkov, D. M. Vlasenko, N. M. Budnev, and Yu. P. Sergienko
Subjects: Space and Planetary Science, Astronomy and Astrophysics
Published: 2019
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20. Energy Spectrum of Primary Cosmic Rays, According to TUNKA-133 and TAIGA-HiSCORE EAS Cherenkov Light Data

Author: Evgeny Postnikov, Yu. Lemeshev, Mihai Popescu, Roman Raikin, M. Slunecka, Bayarto Lubsandorzhiev, O. G. Grishin, S. Kiryuhin, K. G. Kompaniets, A. A. Grinyuk, E. A. Osipova, L. A. Kuzmichev, V. M. Grebenyuk, Pavel Bezyazeekov, V. Boreyko, A. V. Tkachenko, Dmitry Zhurov, L. V. Pankov, Andrey Sokolov, N. V. Gorbunov, A. Chiavassa, V. Prosin, L. G. Sveshnikova, M. Kunnas, Anatoly Lagutin, A. Pakhorukov, L. G. Tkachev, N. M. Budnev, A. Yu. Sidorenkov, A. A. Petrukhin, V. Samoliga, Aleksey Zagorodnikov, R. Wischnewski, R. R. Mirgazov, V. A. Poleschuk, A. Pushnin, E.G. Popova, Oleg Fedorov, Valery Zurbanov, Aleksandr Gafarov, B. M. Sabirov, A. V. Skurikhin, A. A. Silaev, A. Borodin, V.A. Tabolenko, P. Kirilenko, Evgenii V Rjabov, I. I. Yashin, Y. Kazarina, A. Yu. Garmash, I. I. Astapov, R. D. Monkhoev, T. I. Gress, Dieter Horns, A. N. Dyachok, M. Tluczykont, Grigory Rubtsov, N. N. Kalmykov, N. B. Lubsandorzhiev, C. Spiering, M. Brueckner, V. S. Ptuskin, A. Ivanova, Yu. A. Semeney, O. A. Gress, V. A. Kozhin, V. V. Kindin, Y. Sagan, V. V. Lenok, A. Porelli, E. A. Kravchenko, E. E. Korosteleva, R. P. Kokoulin, B.A. Tarashansky, Mikhail Panasyuk, and R. Mirzoyan
Subjects: 010302 applied physics, Physics, Range (particle radiation), 010308 nuclear & particles physics, Hadron, General Physics and Astronomy, Flux, Cosmic ray, 01 natural sciences, Spectral line, Nuclear physics, Primary (astronomy), 0103 physical sciences, Energy spectrum, Cherenkov radiation
Abstract: The Tunka-133 Cherenkov complex for recording extensive air showers (EAS) collected data over seven winters from 2009 to 2017. The differential energy spectra of all particles was acquired in the 6 × 1015–3 × 1018 eV range of energies over 2175 h. The TAIGA-HiSCORE complex is continually being expanded and upgraded. Data acquired by 30 first-line stations over 35 days during the period 2017–2018 is analyzed in this work. As at the Tunka-133 setup, the primary particle energies above 1015 eV are measured using the density of the Cherenkov light flux at a distance of 200 m from a shower’s axis. Data on lower energies are collected by determining the energy of the light flux near a shower’s axis. This results in a spectrum of 2 × 1014–1017 eV. The combined spectrum for the two systems covers a range of 2 × 1014–2 × 1018 eV.
Published: 2019
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21. First Season of Operation of the TAIGA Hybrid Cherenkov Array

Author: M. Brueckner, A. Pakhorukov, E. A. Osipova, N. B. Lubsandorzhiev, L. G. Tkachev, Yu. Lemeshev, A. Ivanova, Y. Sagan, A. Yu. Garmash, Pavel Bezyazeekov, V. Boreyko, V. A. Poleschuk, S. Kiryuhin, A. Pushnin, A. V. Skurikhin, M. Kunnas, L. A. Kuzmichev, C. Spiering, V. M. Grebenyuk, Evgeny Postnikov, M. Tluczykont, N. V. Gorbunov, Grigory Rubtsov, N. N. Kalmykov, K. G. Kompaniets, Anatoly Lagutin, E. A. Kravchenko, Mikhail Panasyuk, Dieter Horns, O. A. Gress, A. A. Petrukhin, E. E. Korosteleva, A. V. Tkachenko, V. A. Kozhin, Yulia Kazarina, A. Yu. Sidorenkov, V. V. Kindin, Aleksey Zagorodnikov, R. P. Kokoulin, A. Chiavassa, V. Prosin, V. Samoliga, B.A. Tarashansky, Dmitry Zhurov, N. M. Budnev, R. Mirzoyan, M. Slunecka, B. M. Sabirov, Bayarto Lubsandorzhiev, I. I. Yashin, P. Kirilenko, Andrey Sokolov, V. S. Ptuskin, V.A. Tabolenko, I. I. Astapov, L. G. Sveshnikova, Yu. A. Semeney, V. V. Lenok, A. Porelli, O. G. Grishin, R. R. Mirgazov, Oleg Fedorov, A. Borodin, R. Wischnewski, Evgenii V Rjabov, Aleksandr Gafarov, A. A. Silaev, R. D. Monkhoev, T. I. Gress, Valery Zurbanov, Roman Raikin, E.G. Popova, A. A. Grinyuk, L. V. Pankov, A. N. Dyachok, and M. Popescu
Subjects: Physics, Astrophysics::High Energy Astrophysical Phenomena, Monte Carlo method, Astrophysics::Instrumentation and Methods for Astrophysics, Gamma ray, General Physics and Astronomy, Astronomy, Cosmic ray, IACT, Radiation, law.invention, Telescope, law, Observatory, Cherenkov radiation
Abstract: Work is currently under way in the Tunka Valley, 50 km from Lake Baikal, to create the TAIGA gamma observatory for studying gamma radiation and cosmic ray fluxes in the 1013–1018 eV range of energies. To detect gamma rays with energies above tens of TeV, a hybrid method of detecting showers is implemented. It is based on data obtained by the TAIGA Imaging Atmospheric Cherenkov Telescope (IACT) and the wide-angle TAIGA-HiSCORE array. The preliminary results from processing the telescope’s data for the low-energy region (>2–3 TeV) are presented. Joint events with energy more than 50 TeV are analyzed and compared to Monte Carlo calculations.
Published: 2019
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22. Monte Carlo Simulation of the TAIGA Experiment

Author: R. D. Monkhoev, T. I. Gress, Y. Sagan, R. R. Mirgazov, L. A. Kuzmichev, V. M. Grebenyuk, Oleg Fedorov, M. Brueckner, N. B. Lubsandorzhiev, A. V. Skurikhin, A. Borodin, A. Ivanova, Yu. Lemeshev, E.G. Popova, V.A. Tabolenko, Dmitry Zhurov, B.A. Tarashansky, S. Kiryuhin, A. V. Tkachenko, Mikhail Panasyuk, Dieter Horns, M. Tluczykont, V. S. Ptuskin, A. Pushnin, Roman Raikin, O. G. Grishin, Anatoly Lagutin, A. Chiavassa, A. A. Petrukhin, R. Mirzoyan, V. Prosin, Evgeny Postnikov, Valery Zurbanov, C. Spiering, A. A. Grinyuk, Yulia Kazarina, M. Kunnas, O. A. Gress, L. G. Sveshnikova, A. Pakhorukov, R. Wischnewski, L. G. Tkachev, A. N. Dyachok, V. A. Poleschuk, M. Slunecka, Bayarto Lubsandorzhiev, V. A. Kozhin, Andrey Sokolov, I. I. Astapov, M. Popescu, A. Yu. Garmash, E. A. Kravchenko, Evgenii V Rjabov, B. M. Sabirov, E. E. Korosteleva, V. V. Kindin, I. I. Yashin, Grigory Rubtsov, N. N. Kalmykov, R. P. Kokoulin, L. V. Pankov, N. M. Budnev, P. Kirilenko, V. V. Lenok, A. Porelli, Yu. A. Semeney, V. Samoliga, E. A. Osipova, Pavel Bezyazeekov, V. Boreyko, N. V. Gorbunov, Aleksandr Gafarov, A. A. Silaev, Aleksey Zagorodnikov, K. G. Kompaniets, and A. Yu. Sidorenkov
Subjects: 010302 applied physics, Physics, Physics::Instrumentation and Detectors, 010308 nuclear & particles physics, business.industry, Astrophysics::High Energy Astrophysical Phenomena, Monte Carlo method, Detector, Astrophysics::Instrumentation and Methods for Astrophysics, General Physics and Astronomy, Cosmic ray, 01 natural sciences, Software, Air shower, Observatory, 0103 physical sciences, business, Energy (signal processing), Cherenkov radiation, Remote sensing
Abstract: The TAIGA (Tunka Advanced Instrument for cosmic ray physics and Gamma-ray Astronomy) experiment aims at observing gamma-rays in the energy range from 1 TeV to several 100 TeV. The operation of the observatory is based on a new hybrid approach that combines imaging air Cherenkov telescopes (IACTs) and wide-angle Cherenkov detectors (TAIGA-HiSCORE) for measuring times of extensive air shower (EAS) light front arrival. Monte Carlo simulations are compared to real data to determine the performance of the detector setup. Dedicated software and algorithms are described, model parameters are given, and an overview of the current status of model-based performance studies is presented.
Published: 2019
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23. TAIGA: A Complex of Hybrid Systems of Cooperating Detectors for Gamma Astronomy and Cosmic Ray Physics in the Tunka Valley

Author: Evgeny Postnikov, Roman Raikin, O. A. Gress, A. A. Grinyuk, V. A. Kozhin, V. V. Kindin, V. Samoliga, V. A. Poleschuk, M. Slunecka, Bayarto Lubsandorzhiev, A. Chiavassa, R. R. Mirgazov, V. S. Ptuskin, R. Mirzoyan, A. Yu. Garmash, V. Prosin, L. A. Kuzmichev, V. M. Grebenyuk, Anatoly Lagutin, Oleg Fedorov, M. Kunnas, L. V. Pankov, E. A. Osipova, Pavel Bezyazeekov, A. A. Petrukhin, Aleksandr Gafarov, Mihai Popescu, R. Wischnewski, A. A. Silaev, M. Tluczykont, A. V. Skurikhin, A. Borodin, Mikhail Panasyuk, R. D. Monkhoev, T. I. Gress, Aleksey Zagorodnikov, A. V. Tkachenko, Dieter Horns, N. B. Lubsandorzhiev, N. V. Gorbunov, Dmitry Zhurov, A. Ivanova, L. G. Sveshnikova, A. Tanaev, I. I. Yashin, N. I. Karpov, E.G. Popova, O. G. Grishin, A. N. Dyachok, R. Nakhtigal, A. Pakhorukov, L. G. Tkachev, V.A. Tabolenko, Y. Sagan, K. G. Kompaniets, A. Porelli, Valery Zurbanov, A. Pushnin, E. A. Kravchenko, A. Yu. Sidorenkov, E. E. Korosteleva, S. Kiryuhin, R. P. Kokoulin, V. P. Sulakov, B.A. Tarashansky, Y. Kazarina, P. Kirilenko, Andrey Sokolov, N. M. Budnev, V. V. Lenok, Grigory Rubtsov, N. N. Kalmykov, C. Spiering, and I. I. Astapov
Subjects: 010302 applied physics, COSMIC cancer database, 010308 nuclear & particles physics, Observatory, 0103 physical sciences, Detector, Taiga, Gamma ray detectors, General Physics and Astronomy, Astronomy, Cosmic ray, Radiation, 01 natural sciences
Abstract: The relevance and benefits of the new TAIGA gamma observatory complex in the Tunka Valley (50 km from Lake Baikal) are discussed. The main aim of the TAIGA installation is to study high-energy gamma radiation and search for cosmic pevatrons. The first series of gamma stations was commissioned in 2019 and covers an area of 1 km2. Its expected integral gamma radiation sensitivity at an energy of 100 TeV over 300 h of source monitoring is (2–5) × 10−13 TeV cm−2 s−1. It is planned to expand the effective area of TAIGA gamma observation to 10 km2 in the future.
Published: 2019
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24. V404 CYG/GS 2023+338: Monitoring in the Optical with Robotic Telescopes of the MASTER Global Network during the 2015 Superburst

Author: V. M. Lipunov, Pavel Balanutsa, E. S. Gorbovskoy, A. S. Kuznetsov, I. S. Zalozhnykh, Yu. V. Ishmukhametova, L. G. Titarchuk, F. Giovanelli, M. Serra-Ricart, V. G. Kornilov, V. Grinshpun, Rafael Rebolo, V. Yurkov, V. Senik, O. A. Gress, D. A. H. Buckley, O. Ershova, V. V. Vladimirov, V. Krushinskiy, A. G. Tlatov, N. V. Tyurina, N. I. Shakura, D. Zimnukhov, N. M. Budnev, A. Gabovich, and D. Vlasenko
Subjects: Physics, 010308 nuclear & particles physics, Astrophysics::High Energy Astrophysical Phenomena, Astronomy, Astronomy and Astrophysics, Optical polarization, Polarization (waves), 01 natural sciences, law.invention, Telescope, Space and Planetary Science, Homogeneous, law, 0103 physical sciences, Optical radiation, 010303 astronomy & astrophysics
Abstract: 2070 unique, homogeneous photometric and polarization observations of the microquasar in a binary system with a black hole V404 Cyg/GS2023+338 obtained in 2015 with the MASTER global network of robotic telescopes (16 robotic telescopes located at eight points on the Earth in Russia, Spain, South Africa, and Argentina) are presented. MASTER was the first telescope network to obtain optical observations of the microquasar after its gamma-ray outburst in 2015. Observations were carried out from 18:34:09 UT on June 15, 2015 until December 2015 in four polarizations and in the four standard BV RI filters. The paper presents the results of these observations and a comparative analysis of optical and X-ray data. The observations confirm the previously discovered super-long delays of the optical radiation relative to the X-ray outbursts. Possible mechanisms causing the delay in the optical variations relative to the X-ray variations are discussed. Variability of the optical polarization discovered earlier is confirmed another similar episode reported.
Published: 2019
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25. The Concept of a Multi-Functional Astronomy Complex and Dynamically Integrated Database Applied to Multi-Channel Observations with the MASTER Global Network

Author: O. A. Gress, V. Yurkov, V. M. Lipunov, V. V. Vladimirov, E. S. Gorbovskoi, N. V. Tyurina, A. S. Kuznetsov, A. M. Gabovich, D. Vlasenko, Pavel Balanutsa, D. Kuvshinov, D. Zimnukhov, V. G. Kornilov, and V. Senik
Subjects: Physics, 010308 nuclear & particles physics, Event (computing), Gravitational wave, Astrophysics::High Energy Astrophysical Phenomena, Detector, Astrophysics::Instrumentation and Methods for Astrophysics, Astronomy, Astronomy and Astrophysics, 01 natural sciences, LIGO, Space and Planetary Science, 0103 physical sciences, Global network, State (computer science), Neutrino, 010303 astronomy & astrophysics, Realization (systems)
Abstract: The concept of a multi-functional astronomical complex as applied to robotic astronomy networks and systems is formulated. The practical realization of this concept in the MASTER global network of robotic telescopes of Moscow State University is described. The dynamically integrated MASTER database, which transforms a network of robotic telescopes into a robotic network, is described. Real, multi-channel astronomical observations obtained on the MASTER global network are used to show the effective application of this concept. The MASTER global network is continuously participating in multi-wavelength and multi-channel observations aimed at studying astrophysical sources located in extreme conditions, including the sources of gravitational waves registered by the LIGO/VIRGO detectors, of high-energy neutrinos detected by IceCube and ANTARES, and of fast radio bursts (FRBs) and gamma-ray bursts (GRBs). The MASTER network provided the most extensive survey of the first error field for the LIGO gravitational-wave outburst GW 150914 (5000 square degrees) and carried out the first independent localization of the gravitational-wave event GW170817. TheMASTER network has also discovered more than 1600 optical transients with various physical natures. Data obtained with the MASTER network have been used to provide pointing information to major ground-based and space-based telescopes.
Published: 2019
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26. TAIGA-IACT pointing control and monitoring software status

Author: Dmitriy Zhurov, O. A. Gress, D. S. Lukyantsev, I. I. Astapov, A. K. Awad, P. A. Bezyazeekov, M. Blank, E. A. Bonvech, A. N. Borodin, A. V. Bulan, M. Brueckner, N. M. Budnev, A. Chiavassa, D. V. Chernov, A. N. Dyachok, A. R. Gafarov, A. Yu. Garmash, V. M. Grebenyuk, E. Gress, T. I. Gress, O. G. Grishin, A. A. Grinyuk, Dieter Horns, N. N. Kalmykov, V. V. Kindin, S. N. Kiryuhin, R. P. Kokoulin, K. G. Kompaniets, E. E. Korosteleva, V. A. Kozhin, E. A. Kravchenko, A. P. Kryukov, L. A. Kuzmichev, A. A. Lagutin, M. Lavrova, B. K. Lubsandorzhiev, N. B. Lubsandorzhiev, A. D. Lukanov, R. R. Mirgazov, R. Mirzoyan, R. D. Monkhoev, E. A. Osipova, A. L. Pakhorukov, A. Pan, L. V. Pankov, A. D. Panov, A. A. Petrukhin, D. A. Podgrudkov, V. A. Poleschuk, M. Popesku, E. G. Popova, A. Porelli, E. B. Postnikov, V. V. Prosin, V. S. Ptuskin, A. A. Pushnin, R. I. Raikin, A. Y. Razumov, G. I. Rubtsov, E. V. Ryabov, Y. I. Sagan, V. S. Samoliga, A. A. Silaev, A. A. junior Silaev, Andrei Sidorenkov, A. V. Skurikhin, M. Slunecka, A. V. Sokolov, L. G. Sveshnikova, V. A. Tabolenko, B. A. Tarashansky, L. G. Tkachev, R. Togoo, M. Tluczykont, N. Ushakov, A. Vaidyanathan, P. A. Volchugov, N. V. Volkov, D. Voronin, R. Wischnewski, A. V. Zagorodnikov, and I. I. Yashin
Published: 2021
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27. TAIGA - an advanced hybrid detector complex for astroparticle physics, cosmic ray physics and gamma-ray astronomy

Author: V. P. Sulakov, E. A. Kravchenko, Roman Raikin, A. A. Grinyuk, A. Chiavassa, E. E. Korosteleva, BayarJon Paul Lubsandorzhiev, E. Popova, R. R. Mirgazov, L. G. Sveshnikova, S. Malakhov, R. P. Kokoulin, R. Togoo, A. Petrukhin, Yu. Lemeshev, A.V. Igoshin, S. Kiryuhin, V. V. Prosin, A. Porelli, A. Borodin, M. Blank, A. Ivanova, M. Tluczykont, A. N. Dyachok, V.A. Tabolenko, L. G. Tkachev, V. Samoliga, V. A. Poleschuk, R. Wischnewski, A. Bulan, E. A. Osipova, N. Ushakov, Pavel Bezyazeekov, Evgeny Postnikov, D. Zhurov, L. V. Pankov, A. Garmash, M. Ternovoy, D. Voronin, O. A. Gress, T. I. Gress, V. V. Kindin, I. I. Astapov, V. A. Kozhin, K. G. Kompaniets, Andrey Sokolov, E. V. Ryabov, R. Mirzoyan, Grigory Rubtsov, N. N. Kalmykov, O. Grishin, M. Popesku, D. Lukyantsev, V. Slunecka, A. V. Skurikhin, Y. Sagan, Dieter Horns, V. S. Ptuskin, P. Volchugov, A. L. Pakhorukov, A. Tanaev, A. Pushnin, N. B. Lubsandorzhiev, Aleksandr Gafarov, A. A. Silaev, A. V. Zagorodnikov, N. M. Budnev, Y. Suvorkin, E. Gress, A. Zhaglova, L. A. Kuzmichev, V. M. Grebenyuk, B. A. Tarashchansky, A. Vaidyanathan, I. Poddubnyi, Anatoly Lagutin, V. Ponomareva, M. Brückner, R. D. Monkhoev, B. M. Sabirov, I. I. Yashin, Alexander Kryukov, and A. Sidorenkov
Subjects: Astroparticle physics, Physics, Observatory, Astrophysics::High Energy Astrophysical Phenomena, Taiga, Detector, Astrophysics::Instrumentation and Methods for Astrophysics, Astronomy, Cosmic ray, Electron, Gamma-ray astronomy, Cherenkov radiation
Abstract: The physical motivations and performance of the TAIGA (Tunka Advanced Instrument for cosmic ray physics and Gamma Astronomy) project are presented. The TAIGA observatory addresses ground-based gamma-ray astronomy at energies from a few TeV to several PeV, as well as cosmic ray physics from 100 TeV to several EeV and astroparticle physics. The pilot TAIGA complex locates in the Tunka valley, ~50 km West from the southern tip of the lake Baikal. It includes integrating air Cherenkov TAIGA-HiSCORE array with 120 wide-angle optical stations distributed over on area 1 square kilometer about and three the 4-m class Imaging Atmospheric Cherenkov Telescopes of the TAIGA-IACT array. The latter array has a shape of triangle with side lengths of about 300m, 400m and 500m. The expected integral sensitivity of the 1 km2 TAIGA detector will be about 2,5 × 10-13 TeV cm-2 sec-1 for detection of E ≥ 100 TeV gamma-rays in 300 hours of source observations. The combination of the wide angle Cherenkov array and IACTs could offer a cost effective-way to build a really large (up to 10 km2) array for very high energy gamma-ray astronomy. The reconstruction of a given EAS energy, incoming direction and the core position, based on the TAIGA-HiSCORE data, allows one to increase the distance between the relatively expensive IACTs up to 600-800 m. These, together with the surface and underground electron/Muon detectors will be used for selection of gamma-ray induced EAS. Present status of the project, together with the current array description and the first experimental results and plans for the future will be reported.
Published: 2021
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28. Application of New Approximations of the Lateral Distribution of EAS Cherenkov Light in the Atmosphere

Author: R. R. Mirgazov, V. A. Poleschuk, N. B. Lubsandorzhiev, Oleg Fedorov, A. Pakhorukov, L. G. Tkachev, Evgeny Postnikov, A. V. Tkachenko, M. Slunecka, Bayarto Lubsandorzhiev, A. Borodin, Andrey Sokolov, E.G. Popova, O. A. Gress, L. G. Sveshnikova, Y. Sagan, R. D. Monkhoev, T. I. Gress, E. A. Osipova, V. V. Lenok, A. N. Dyachok, P. S. Kirilenko, O. G. Grishin, Pavel Bezyazeekov, V. Boreyko, M. Tluczykont, V. A. Kozhin, V. V. Kindin, K. G. Kompaniets, A. V. Skurikhin, R. Nachtigall, A. Porelli, R. Mirzoyan, A. Pushnin, L. V. Pankov, Valery Zurbanov, N. V. Gorbunov, B.A. Tarashansky, A. A. Lagutin, Roman Raikin, Aleksandr Gafarov, I. I. Yashin, V. P. Sulakov, M. Popesku, Dieter Horns, A. Sidorenkov, A. A. Grinyuk, A. A. Silaev, Yu. A. Semeney, V. Samoliga, C. Spiering, Mikhail Panasyuk, Aleksey Zagorodnikov, M. Kunnas, V. S. Ptuskin, A. Chiavassa, E. A. Kravchenko, V. Prosin, A. Ivanova, N. I. Karpov, R. Wischnewski, L. A. Kuzmichev, V. M. Grebenyuk, A. A. Petrukhin, A. Sh. M. Elshoukrofy, Yulia Kazarina, N. M. Budnev, S. Kiryuhin, V.A. Tabolenko, E. E. Korosteleva, A. Garmash, Hussein A. Motaweh, R. P. Kokoulin, I. I. Astapov, Grigory Rubtsov, and N. N. Kalmykov
Subjects: Physics, Nuclear and High Energy Physics, Photon, 010308 nuclear & particles physics, Astrophysics::High Energy Astrophysical Phenomena, Astrophysics::Instrumentation and Methods for Astrophysics, Cosmic ray, Probability density function, 01 natural sciences, Electromagnetic radiation, Atomic and Molecular Physics, and Optics, Computational physics, Massless particle, Distribution function, 0103 physical sciences, Range (statistics), 010303 astronomy & astrophysics, Cherenkov radiation
Abstract: A new knee-like approximation of the lateral distribution function (LDF) of EAS Cherenkov light in the 30–3000 TeV energy range was proposed and tested with simulated showers in our earlier studies. This approximation fits the LDFs of individual showers accurately for all types of primary particles gamma-rays, protons, and nuclei) and is suitable for reconstructing the shower core, determining the energy, and separating gamma-induced showers from hadron-induced ones. In the present study, the knee-like fitting function is used to determine the parameters of real showers detected by TAIGA-HiSCORE. It is demonstrated that this approximation characterizes properly all types of individual LDFs of experimental events in the 300–1000 TeV range. The accuracy of fit is governed by fluctuations intrinsic to the process of measurement of the Cherenkov photon density. The probability density function of these fluctuations was reconstructed and introduced into simulations. Certain useful methodical applications of the knee-like approximation are con-sidered, and the possibility of shower sorting into nuclei groups is examined. The extensive statistical coverage and detailed LDF measurement data of HiSCORE have provided the first opportunity to examine in depth the LDF of Cherenkov radiation in the 300–1000 TeV range.
Published: 2018
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29. TAIGA Gamma Observatory: Status and Prospects

Author: M. Kunnas, Roman Raikin, Aleksey Zagorodnikov, A. A. Grinyuk, K. G. Kompaniets, V. Samoliga, A. V. Skurikhin, Evgeny Postnikov, A. N. Dyachok, Y. Sagan, B.A. Tarashansky, S. Kiryuhin, L. A. Kuzmichev, R. Wischnewski, V. M. Grebenyuk, L. V. Pankov, M. Slunecka, N. B. Lubsandorzhiev, Bayarto Lubsandorzhiev, A. V. Tkachenko, R. D. Monkhoev, T. I. Gress, V. A. Poleschuk, M. Popesku, L. G. Sveshnikova, V. S. Ptuskin, R. Nachtigall, E. A. Osipova, A. Chiavassa, V. Prosin, N. I. Karpov, O. A. Gress, M. Tluczykont, Pavel Bezyazeekov, V. Boreyko, O. G. Grishin, V. A. Kozhin, A. Pakhorukov, V. V. Kindin, L. G. Tkachev, Aleksandr Gafarov, N. V. Gorbunov, A. A. Silaev, Valery Zurbanov, A. Pushnin, R. R. Mirgazov, Oleg Fedorov, A. Borodin, E. A. Kravchenko, A. A. Petrukhin, E. E. Korosteleva, A. Sh. M. Elshoukrofy, A. Ivanova, Yulia Kazarina, A. Garmash, R. P. Kokoulin, V.A. Tabolenko, E.G. Popova, V. P. Sulakov, Yu. A. Semeney, A. D. Horns, V. V. Lenok, A. Porelli, P. Kirilenko, C. Spiering, Andrey Sokolov, I. I. Yashin, A. Sidorenkov, Anatoly Lagutin, Grigory Rubtsov, N. N. Kalmykov, I. I. Astapov, N. M. Budnev, R. Mirzoyan, and Mikhail Panasyuk
Subjects: Physics, Nuclear and High Energy Physics, Muon, Physics::Instrumentation and Detectors, 010308 nuclear & particles physics, Astrophysics::High Energy Astrophysical Phenomena, Astrophysics::Instrumentation and Methods for Astrophysics, Gamma ray, Astronomy, IACT, Cosmic ray, 01 natural sciences, Atomic and Molecular Physics, and Optics, Particle detector, Observatory, 0103 physical sciences, Measuring instrument, 010303 astronomy & astrophysics, Cherenkov radiation
Abstract: Over the past few years, the TAIGA (Tunka Advanced Instrument for cosmic ray physics and Gamma-ray Astronomy) observatory has been being deployed in the Tunka Valley, Republic of Buryatia. It is designed for studying gamma rays of energy above 30 TeV and performing searches for sources of galactic cosmic rays with energies in the vicinity of 1 PeV, which is an energy region around the classic knee in the cosmic-ray energy spectrum. The first phase of the observatory will be situated at a distance of about 50 km from Lake Baikal at the site of the Tunka-133 array. The TAIGA gamma observatory will include a network of 500 wide-angle (0.6 sr) Cherenkov detectors (TAIGA-HiSCORE array) and up to 16 atmospheric Cherenkov telescopes (ACT) designed for analyzing the EAS images (imaging atmospheric Cherenkov telescopes, or IACT) and positioned within an area of 5 km2. The observatory will also include muon detectors of total area 2000 m2 distributed over an area of 1 km2. Within the next three years, it is planned to enhance the area of the TAIGA-HiSCORE array by a factor of four—from 0.25 km2 to 1 km2; to supplement the existing IACT with two new ones; and to deploy new muon detectors with a total coverage of 200 m2. The structure of the new observatory is described along with the data analysis techniques used. The most interesting physical results are presented, and the research program for the future is discussed.
Published: 2018
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30. The TAIGA Experiment: From Cosmic Ray Physics to Gamma Astronomy in the Tunka Valley

Author: L. V. Pankov, Evgeny Postnikov, E. A. Osipova, Yu. Lemeshev, V. S. Ptuskin, A. Pushnin, Pavel Bezyazeekov, V.A. Tabolenko, S. Kiryuhin, L. A. Kuzmichev, V. M. Grebenyuk, Yu. A. Semeney, V. Prosin, M. Slunecka, Bayarto Lubsandorzhiev, B.A. Tarashansky, V. A. Poleschuk, Mikhail Panasyuk, E. I. Kravchenko, N. B. Lubsandorzhiev, N. V. Gorbunov, K. G. Kompaniets, Grigory Rubtsov, N. N. Kalmykov, P. Kirilenko, E. E. Korosteleva, Dmitriy Kostunin, R. Mirzoyan, O. A. Gress, R. P. Kokoulin, A. Pakhorukov, Y. Kazarina, L. G. Tkachev, V. A. Kozhin, A. A. Petrukhin, V. V. Kindin, V. V. Lenok, E.G. Popova, V. Samoliga, A. Ivanova, A. Yu. Sidorenkov, N. M. Budnev, Aleksey Zagorodnikov, A. O. Skurikhin, Andrey Sokolov, I. I. Astapov, A. A. Grinyuk, Y. Sagan, A. V. Boreyko, A. N. Dyachok, L. G. Sveshnikova, A. Yu. Garmash, Dmitry Zhurov, O. G. Grishin, R. D. Monkhoev, T. I. Gress, A. V. Tkachenko, E. V. Ryabov, Aleksandr Gafarov, A. A. Silaev, R. R. Mirgazov, Valery Zurbanov, Oleg Fedorov, A. Borodin, B. M. Sabirov, and I. I. Yashin
Subjects: Physics, Nuclear and High Energy Physics, Muon, Physics::Instrumentation and Detectors, 010308 nuclear & particles physics, Astrophysics::High Energy Astrophysical Phenomena, Hadron, Detector, Astrophysics::Instrumentation and Methods for Astrophysics, Astronomy, Cosmic ray, Electron, Radiation, 01 natural sciences, Observatory, 0103 physical sciences, 010303 astronomy & astrophysics, Cherenkov radiation
Abstract: The article presents the relevance and advantages of the new gamma observatory TAIGA (Tunka Advanced Instrument for cosmic ray physics and Gamma Astronomy), which is being constructed in the Tunka Valley 50 km from Lake Baikal. Various detectors of the six TAIGA gamma observatory arrays register the Cherenkov and radio radiation, as well as the electron and muon components of EAS. The primary objective of the TAIGA gamma observatory is to study the high-energy part of the gamma-ray spectrum, in particular, in order to search for Galactic PeVatrons. The energy, direction, and position of the EAS axis are reconstructed in the observatory based on the data of the wide-angle Cherenkov detectors of the TAIGA-HiSCORE experiment. Taking into account this information, the gamma quanta are distinguished from the hadron background using the data obtained by the muon detectors and telescopes that register the EAS image in the Cherenkov light. In this hybrid mode of operation, the atmospheric Cherenkov telescopes can operate in the mono-mode, and the distance between them can be increased to 800–1000 m, which makes it possible to construct an array with an area of 5 km2 and more at relatively low cost and in a short time. By 2019, the first stage of the gamma observatory with an area of 1 km2 will be constructed; its expected integral sensitivity for detecting the gamma radiation with an energy of 100 TeV at observation of the source for 300 hours will be approximately $$2 \times 5$$ 10–13 TeV cm–2s–1.
Published: 2018
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31. The Search for Diffuse Gamma Rays Using Data from the Tunka-Grande Experiment

Author: S. Kiryuhin, Valery Zurbanov, O. A. Gress, Aleksandr Gafarov, A. Pushnin, A. Chiavassa, V. Prosin, V. A. Kozhin, A. A. Silaev, E. A. Osipova, D. M. Voronin, A. Pakhorukov, R. D. Monkhoev, T. I. Gress, V. A. Poleschuk, Mikhail Panasyuk, R. R. Mirgazov, A. V. Skurikhin, Bayarto Lubsandorzhiev, L. G. Sveshnikova, N. B. Lubsandorzhiev, L. A. Kuzmichev, V. S. Ptuskin, E.G. Popova, Aleksey Zagorodnikov, V.A. Tabolenko, E. E. Korosteleva, N. N. Kalmykov, V. P. Sulakov, Yu. A. Semeney, C. Spiering, A. N. Dyachok, Y. Kazarina, N. M. Budnev, and L. V. Pankov
Subjects: 010302 applied physics, Physics, Range (particle radiation), 010308 nuclear & particles physics, 0103 physical sciences, Hadron, Energy spectrum, Gamma ray, General Physics and Astronomy, Cosmic ray, Astrophysics, Mass composition, 01 natural sciences
Abstract: The Tunka-Grande array is part of an experimental complex located in the Tunka Valley (Republic of Buryatia, Russia) about 50 km from Lake Baikal. This complex also contains the Tunka-133 and Tunka-Rex arrays. The aim of this complex is to study the primary cosmic ray energy spectrum and mass composition in the energy range of 1016–1018 eV, and to search for diffuse gamma rays in the energy range of 5 × 1016–5 × 1017 eV. The design of the Tunka-Grande array and the procedure for reconstructing the parameters of extensive air showers (EASes) are described, and preliminary results are presented from the search for diffuse gamma rays with energies of more than 5 × 1016 eV.
Published: 2019
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32. Improving Signal Reconstruction with Matched Filters and Neural Networks for the Tunka-Rex Experiment

Author: T. N. Marshalkina, P. A. Bezyazeekov, N. M. Budnev, D. O. Chernykh, O. L. Fedorov, O. A. Gress, A. Haungs, R. Hiller, T. Huege, Y. A. Kazarina, M. Kleifges, D. G. Kostunin, E. E. Korosteleva, L. A. Kuzmichev, V. V. Lenok, N. B. Lubsandorzhiev, R. R. Mirgazov, R. Monkhoev, E. A. Osipova, A. L. Pakhorukov, L. V. Pankov, V. V. Prosin, F. G. Schröder, D. A. Shipilov, and A. V. Zagorodnikov
Subjects: General Physics and Astronomy
Published: 2019
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33. Precise Reconstruction of a Shower Maximum in the Tunka Radio Extension Experiment

Author: P. A. Bezyazeekov, N. M. Budnev, D. O. Chernykh, O. L. Fedorov, O. A. Gress, A. Haungs, R. Hiller, T. Huege, Y. A. Kazarina, M. Kleifges, D. G. Kostunin, E. E. Korosteleva, L. A. Kuzmichev, V. V. Lenok, N. B. Lubsandorzhiev, T. N. Marshalkina, R. R. Mirgazov, R. Monkhoev, E. A. Osipova, A. L. Pakhorukov, L. V. Pankov, V. V. Prosin, F. G. Schröder, D. A. Shipilov, and A. V. Zagorodnikov
Subjects: General Physics and Astronomy
Published: 2019
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34. Scintillation detectors for the TAIGA experiment

Author: Evgeny Postnikov, Yu. A. Semeney, P. Kirilenko, V.A. Tabolenko, V. V. Lenok, Bayarto Lubsandorzhiev, A. Porelli, L. A. Kuzmichev, Aleksandr Gafarov, M. Kunnas, V. M. Grebenyuk, D. Zhurov, Andrey Sokolov, R. R. Mirgazov, E. A. Kravchenko, Valery Zurbanov, A. A. Petrukhin, Aleksey Zagorodnikov, A. A. Grinyuk, A. Chiavassa, V. Prosin, Mikhail Panasyuk, E. E. Korosteleva, B.A. Tarashansky, A. A. Silaev, V. Samoliga, A. Garmash, R. P. Kokoulin, M. Brueckner, Yulia Kazarina, R. D. Monkhoev, T. I. Gress, E. A. Osipova, L. G. Sveshnikova, V. A. Poleschuk, R. Mirzoyan, A. V. Skurikhin, Oleg Fedorov, Pavel Bezyazeekov, A. Ivanova, R. Nachtigall, A. Pakhorukov, L. G. Tkachev, N. M. Budnev, Yu. Lemeshev, E.G. Popova, N. V. Gorbunov, Dieter Horns, M. Tluczykont, K. G. Kompaniets, I. I. Astapov, A. Borodin, S. Kiryuhin, Grigory Rubtsov, N. N. Kalmykov, O. Grishin, L. V. Pankov, A. N. Dyachok, M. V. Lavrova, A. Vaidyanathan, C. Spiering, O. A. Gress, V. A. Kozhin, V. V. Kindin, Evgenii V Rjabov, R. Wischnewski, M. Popesku, V. Slunecka, V. S. Ptuskin, N. B. Lubsandorzhiev, B. M. Sabirov, I. I. Yashin, A. Sidorenkov, A. Pushnin, and Y. Sagan
Subjects: Physics, Nuclear and High Energy Physics, Scintillation, Physics::Instrumentation and Detectors, 010308 nuclear & particles physics, Detector, Scintillator, Wavelength shifter, 01 natural sciences, 030218 nuclear medicine & medical imaging, 03 medical and health sciences, 0302 clinical medicine, 0103 physical sciences, Physics::Accelerator Physics, High Energy Physics::Experiment, Instrumentation, Remote sensing
Abstract: It is planned that new TAIGA-Muon detectors will complement the existing Tunka-GRANDE facility of scintillation detectors of the TAIGA gamma-observatory in the Tunka valley, Russia. The new design of scintillation detector with wavelength shifting bars and PMTs is developed. The first prototype of the counter was installed and tested using infrastructure of the Tunka-GRANDE installation in 2017. The mass production of counters has begun in 2018 at the Novosibirsk State University.
Published: 2019
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35. The TAIGA-HiSCORE array prototype: Status and first results

Author: I. I. Astapov, N. S. Barbashina, A. G. Bogdanov, V. Boreyko, N. M. Budnev, R. Wischnewski, A. R. Gafarov, V. Grebenyuk, O. A. Gress, T. I. Gress, A. A. Grinyuk, O. G. Grishin, N. Gorbunov, A. N. Dyachok, S. N. Epimakhov, A. V. Zagorodnikov, V. L. Zurbanov, A. L. Ivanova, Y. A. Kazarina, N. N. Kalmykov, N. I. Karpov, V. V. Kindin, S. N. Kiryuhin, R. P. Kokoulin, K. G. Kompaniets, E. E. Korosteleva, V. A. Kozhin, E. Kravchenko, M. Kunnas, L. A. Kuzmichev, A. Chiavassa, V. V. Lenok, B. K. Lubsandorzhiev, N. B. Lubsandorzhiev, R. R. Mirgazov, R. Mirzoyan, R. D. Monkhoev, R. Nachtigall, A. L. Pakhorukov, E. A. Osipova, M. I. Panasyuk, L. V. Pankov, A. A. Petrukhin, M. Popescu, A. Porelli, A. A. Pushnin, V. A. Poleschuk, E. G. Popova, E. B. Postnikov, V. V. Prosin, V. S. Ptuskin, G. I. Rubtsov, V. S. Samoliga, Y. A. Semeney, A. A. Silaev, A. V. Skurikhin, L. G. Sveshnikova, A. Sokolov, V. A. Tabolenko, B. A. Tarashchansky, L. G. Tkachev, A. V. Tkachenko, M. Tluczykont, O. L. Fedorov, D. Horns, C. Spiering, K. Yurin, and I. I. Yashin
Subjects: 010308 nuclear & particles physics, Observatory, 0103 physical sciences, Taiga, Gamma ray, General Physics and Astronomy, 010303 astronomy & astrophysics, 01 natural sciences, Geology, Remote sensing
Abstract: The design for the TAIGA-HiSCORE array, a part of the TAIGA Gamma Ray Observatory, is considered. The observatory is being constructed in the Tunka Valley, 50 km from Lake Baikal. Preliminary results obtained using the first 28 optical stations of the array are presented.
Published: 2017
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36. Optimization of electromagnetic and hadronic extensive air shower identification using the muon detectors of the TAIGA experiment

Author: K. G. Kompaniets, A. Chiavassa, V.A. Tabolenko, Valery Zurbanov, R. R. Mirgazov, E. A. Kravchenko, E. E. Korosteleva, R. P. Kokoulin, M. Kunnas, O. Grishin, Anatoly Lagutin, T. I. Gress, Oleg Fedorov, D. Voronin, Aleksandr Gafarov, L. G. Tkachev, A. V. Skurikhin, I. I. Astapov, R. Nachtigall, V. V. Lenok, A. A. Silaev, A. V. Zagorodnikov, A. Borodin, Evgeny Postnikov, B.A. Tarashansky, E. A. Osipova, V. Slunecka, A. Krykov, V. S. Ptuskin, A. Silaev junior, E.G. Popova, Dieter Horns, A. Porelli, R. D. Monkhoev, B. M. Sabirov, Pavel Bezyazeekov, V. Boreyko, I. I. Yashin, A. L. Pakhorukov, Mihai Popescu, R. Wischnewski, V. A. Poleschuk, D. Zhurov, M. Brueckner, A. Sidorenkov, L. A. Kuzmichev, V. M. Grebenyuk, A. Garmash, Yu. A. Semeney, Grigory Rubtsov, N. N. Kalmykov, A. Ivanova, Bayarto Lubsandorzhiev, N. V. Gorbunov, Evgenii V Rjabov, A. V. Tkachenko, Yu. Lemeshev, P. Kirilenko, Roman Raikin, N. M. Budnev, V. Samoliga, A. Vaidyanathan, S. Kiryuhin, V. V. Prosin, A. A. Grinyuk, O. A. Gress, C. Spiering, V. A. Kozhin, V. V. Kindin, A. A. Petrukhin, Y. Sagan, M. Tluczykont, Yulia Kazarina, L. G. Sveshnikova, Andrey Sokolov, A. Pushnin, N. B. Lubsandorzhiev, N. Ushakov, L. V. Pankov, A. N. Dyachok, Mikhail Panasyuk, and R. Mirzoyan
Subjects: Physics, Nuclear and High Energy Physics, Range (particle radiation), TAIGA, Muon, Physics::Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, Monte Carlo method, Detector, Astrophysics::Instrumentation and Methods for Astrophysics, Cosmic ray, Scintillator, Wavelength shifter, Nuclear physics, Air shower, Scintillation detectors, High Energy Physics::Experiment, Instrumentation
Abstract: The TAIGA experiment in the Tunka valley near Lake Baikal is planning an extension with new TAIGA-Muon scintillation detector stations. The main purpose of TAIGA is gamma-ray astronomy in the TeV to PeV energy range and cosmic ray physics. The purpose of the Taiga-Muon detectors is to measure the muon component of air showers for improving cosmic ray composition measurements as well as gamma–hadron separation above 100 TeV. Monte Carlo simulations of the experiment are done with the software packages CORSIKA and GEANT4. Extensive air showers of primary particles in the energy range 100–3000 TeV are created with CORSIKA. The trigger efficiency is calculated and used for optimization. The suppression factor of hadronic showers versus electromagnetic showers is studied, leading to an optimum depth of soil absorber (2 m), at the lowest energy range. Data on the identification efficiency for primary gamma-quanta and proton events are presented as well as the suppression factor.
Published: 2020

37. Cherenkov EAS arrays in the Tunka astrophysical center: From Tunka-133 to the TAIGA gamma and cosmic ray hybrid detector

Author: R. R. Mirgazov, A. Chiavassa, V. Prosin, Oleg Fedorov, A. Borodin, L. G. Sveshnikova, A. V. Skurikhin, Evgeny Postnikov, E.G. Popova, O. G. Grishin, Dieter Horns, Martin Tluczykont, M. Slunecka, D. Zhurov, Bayarto Lubsandorzhiev, V.A. Tabolenko, A. V. Tkachenko, N. B. Lubsandorzhiev, A. Grinyuk, E. A. Kravchenko, V. Samoliga, E. A. Osipova, K. G. Kompaniets, Razmik Mirzoyan, E. E. Korosteleva, V. Kiryuhin, Pavel Bezyazeekov, Alexander Kryukov, A. Sidorenkov, A. Garmash, Valery Zurbanov, Aleksandr Gafarov, R. P. Kokoulin, Grigory Rubtsov, N. N. Kalmykov, A. A. Silaev, A. Pan, A. A. Petrukhin, Aleksey Zagorodnikov, M. Brückner, R. D. Monkhoev, T. I. Gress, A. Pushnin, Anatoly Lagutin, D. Voronin, E. V. Ryabov, Victor Grebenyuk, L. Tkachev, A. Pakharukov, I. I. Astapov, Roman Raikin, Ralf Wischnewski, L. A. Kuzmichev, V. V. Lenok, A. Porelli, Yu. A. Semeney, P. Kirilenko, A. N. Dyachok, Ch. Spiering, N. Ushakov, L. V. Pankov, Y. Sagan, I. V. Yashin, M. Popesku, V. S. Ptuskin, O. A. Gress, V. A. Kozhin, V. V. Kindin, V. A. Poleschuk, Mikhail Panasyuk, Y. Kazarina, B.A. Tarashansky, Andrey Sokolov, and N. M. Budnev
Subjects: Physics, Nuclear and High Energy Physics, Gamma-ray astronomy, Calorimeter (particle physics), 010308 nuclear & particles physics, Aperture, Cosmic rays, EAS Cherenkov light array, Energy spectrum, IACT, Detector, Gamma ray, Astronomy, Cosmic ray, 01 natural sciences, 7. Clean energy, 13. Climate action, 0103 physical sciences, 010303 astronomy & astrophysics, Instrumentation, Cherenkov radiation
Abstract: One of the most informative methods of cosmic ray studies is the detection of Cherenkov light from extensive air showers (EAS). The primary energy reconstruction is possible by using the Earth’s atmosphere as a huge calorimeter . The EAS Cherenkov light array Tunka-133, with ∼ 3 km 2 geometrical area, is taking data since 2009. Tunka-133 is located in the Tunka Astrophysical Center at ∼ 50 km west of Lake Baikal. This array allows us to perform a detailed study of the energy spectrum and the mass composition in the energy range from 6 ⋅ 1 0 15 eV to 1 0 18 eV . Most of the ongoing efforts are focused on the construction of the first stage of the detector TAIGA (Tunka Advanced Instrument for cosmic ray physics and Gamma Astronomy). The latter is designed for the study of gamma rays and charged cosmic rays in the energy range of 1 0 13 eV – 1 0 18 eV . The TAIGA prototype will consist of ∼ 100 wide angle timing Cherenkov stations (TAIGA-HiSCORE) and three IACTs deployed over an area of ∼ 1 km 2 . The installation of the array is planned to be finished in 2019 while the data-taking can start already during the commissioning phase. The joint reconstruction of energy, direction, and core position of the imaging and non-imaging detectors will allow us to increase the distance between the IACTs up to 800 m, therefore providing a low-cost, highly sensitive detector. The relatively low cost together with the high sensitivity for energies ≥ 30–50 TeV make this pioneering technique very attractive for exploring galactic PeVatrons and cosmic rays. In addition to the Cherenkov light detectors we intend to deploy surface and underground muon detectors over an area of 1 km 2 with a total area of about 1000 m 2 . The results of the first season of coincident operation of the first ∼ 4 m diameter IACT with an aperture of ∼ 10°with 30 stations of TAIGA-HiSCORE will be presented.
Published: 2020

38. Optical observations reveal strong evidence for high-energy neutrino progenitor

Author: N. M. Budnev, E. Minkina, V. Topolev, Markus Böttcher, F. Balakin, B. van Soelen, V. B. Petkov, D. Vlasenko, N. V. Tyurina, A. G. Tlatov, R. Rebolo, O. A. Gress, F. Podesta, E. S. Gorbovskoy, A. Kuznetsov, Soebur Razzaque, K. Zhirkov, A. Pozdnyakov, R. Podesta, A. Gabovich, S. I. Svertilov, Valeria Grinshpun, V. Yurkov, A. Chasovnikov, V. M. Lipunov, V. G. Kornilov, D. Buckley, Yu. Sergienko, H. Levato, P. Balanutsa, D. Kuvshinov, Miquel Serra-Ricart, C. E. Lopez, V. Vladimirov, Ilya Gorbunov, and 24420530 - Böttcher, Markus
Subjects: 010504 meteorology & atmospheric sciences, Astrophysics::High Energy Astrophysical Phenomena, FOS: Physical sciences, Applied Physics (physics.app-ph), 01 natural sciences, High Energy Physics - Experiment, Automatic patrol telescopes, High Energy Physics - Experiment (hep-ex), Observatory, 0103 physical sciences, Blazar, Automated telescopes, 010303 astronomy & astrophysics, 0105 earth and related environmental sciences, Astroparticle physics, Physics, High Energy Astrophysical Phenomena (astro-ph.HE), Active galactic nuclei, Ultra-high-energy cosmic radiation, Black holes, Astrophysics::Instrumentation and Methods for Astrophysics, Astronomy, Astronomy and Astrophysics, Physics - Applied Physics, Light curve, Robotic telescope, Neutrino detector, Space and Planetary Science, Neutrino astronomy, Neutrino, Astrophysics - High Energy Astrophysical Phenomena, Particle astrophysics, High energy astrophysics, Blazars
Abstract: We present the earliest astronomical observation of a high energy neutrino error box in which its variability was discovered after high-energy neutrinos detection. The one robotic telescope of the MASTER global international network (Lipunov et al. 2010) automatically imaged the error box of the very high-energy neutrino event IceCube-170922A. Observations were carried out in minute after the IceCube-170922A neutrino event was detected by the IceCube observatory at the South Pole. MASTER found the blazar TXS 0506+056 to be in the off-state after one minute and then switched to the on-state no later than two hours after the event. The effect is observed at a 50-sigma significance level. Also we present own unique 16-years light curve of blazar TXS 0506+056 (518 data set)., 17 pages, 3 figures, 1 Table accepted to The Astrophysical Journal Letters
Published: 2020
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39. The Tunka-Grande experiment: Status and prospects

Author: N. M. Budnev, R. D. Monkhoev, T. I. Gress, S. Kiryuhin, Aleksandr Gafarov, Evgeny Postnikov, Y. Kazarina, A. A. Silaev, C. Spiering, E. A. Osipova, D. M. Voronin, Yu. A. Fomin, A. N. Dyachok, A. Chiavassa, V. Prosin, V. V. Lenok, Bayarto Lubsandorzhiev, N. B. Lubsandorzhiev, Aleksey Zagorodnikov, V.A. Tabolenko, O. G. Grishin, L. G. Sveshnikova, V. S. Ptuskin, A. Pushnin, Valery Zurbanov, A. V. Skurikhin, E.G. Popova, V. Samoliga, E. E. Korosteleva, A. Pakhorukov, V. P. Sulakov, O. A. Gress, Yu. A. Semeney, A. Ivanova, V. A. Kozhin, R. R. Mirgazov, Oleg Fedorov, V. A. Poleschuk, L. A. Kuzmichev, S. N. Epimakhov, Dmitry Zhurov, N. N. Kalmykov, L. V. Pankov, R. Mirzoyan, and Mikhail Panasyuk
Subjects: Physics, Scintillation, Range (particle radiation), Physics::Instrumentation and Detectors, 010308 nuclear & particles physics, Astrophysics::High Energy Astrophysical Phenomena, Astrophysics::Instrumentation and Methods for Astrophysics, General Physics and Astronomy, Cosmic ray, Astrophysics::Cosmology and Extragalactic Astrophysics, 01 natural sciences, Charged particle, Nuclear physics, 0103 physical sciences, Scintillation counter, 010306 general physics, Cherenkov radiation, Radio wave
Abstract: The Tunka-Grande scintillation array is described. The first results from its operation are presented. The prospects for studying primary cosmic rays in the energy range of 1016 to 1018 eV during simultaneous registration of the Cherenkov and charged particle components along with radio emissions from extensive air showers are discussed.
Published: 2017
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40. Studying ultrahigh-energy cosmic rays with the Tunka Radio Extension

Author: Dmitriy Kostunin, O. A. Gress, A. Haungs, N. B. Lubsandorzhiev, L. A. Kuzmichev, V. Kungel, F.G. Schröder, R. R. Mirgazov, E. A. Osipova, T. Marshalkina, O. Krömer, R. Wischnewski, A. L. Pakhorukov, Oleg Fedorov, Pavel Bezyazeekov, L. V. Pankov, R. Hiller, A. V. Zagorodnikov, M. Kleifges, Grigory Rubtsov, N. M. Budnev, E. E. Korosteleva, T. Huege, R. D. Monkhoev, V. V. Prosin, and Yulia Kazarina
Subjects: Antenna array, Physics, Extension (metaphysics), 010308 nuclear & particles physics, 0103 physical sciences, General Physics and Astronomy, Cosmic ray, Ultrahigh energy, Astrophysics, 010306 general physics, 01 natural sciences
Abstract: The Tunka Radio Extention (Tunka-Rex) is an array of radio antennas located at the TAIGA (Tunka Advanced Instrument for Cosmic Ray Physics and Gamma Astronomy) facility. The array occupies an area of approximately 3 km2 and contains 63 antennas. The results from the first two seasons of Tunka-Rex operation (2012–2014) and antenna array modernization (2015–2016) are presented.
Published: 2017
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41. MASTER Optical Observation of LIGO/VIRGO S200302c Event

Author: V. Lipunov, V. Kornilov, A. Chasovnikov, N. Tiurina, D. Vlasenko, E. Gorbovskoy, I. Gorbunov, P. Balanutsa, D. Cheryasov, A. Pozdnyakov, A. Gabovich, O. A. Gress, D. Buckley, R. Podesta, R. Rebolo, M. Serra, F. Balakin, V. Topolev, K. Zhirkov, A. Kuznetsov, V. Vladimirov, V. Senik, F. Podesta, C. Francile, N. M. Budnev, Yu. Sergienko, A. Tlatov, V. Grinshpun, E. Minkina, O. Ershova, D. Kuvshinov, and V. Yurkov
Subjects: General Medicine
Abstract: The results of LIGO/Virgo S200302c (O3) error-box optical inspection by MASTER are presented. We observed 4242 square degrees square degrees inside 3σ error box during 1 month. We present MASTER OT J141401.39–483305.7, MASTER OT J215856.95–392909.6, MASTER OT J061642.05+435617.9, MASTER OT J052817.95+672801.4—optical transients found by the MASTER auto-detection system during this inspection as the result of a survey of large error-fields, indicating the efficiency of MASTER observational strategy.
Published: 2020
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42. Tunka-Grande and TAIGA-Muon scintillation arrays: status and prospects

Author: A. Porelli, Evgeny Postnikov, V. Chernykh, A. Petrukhin, E. A. Kravchenko, A. V. Skurikhin, E. E. Korosteleva, A. Pushnin, Y. Sagan, V. A. Poleschuk, Y. Suvorkin, Konstantin Ustinov, R. D. Monkhoev, R. P. Kokoulin, K. G. Kompaniets, Yu. Lemeshev, B. M. Sabirov, I. I. Astapov, V. V. Kindin, R. Mirzoyan, M. Popesku, Roman Raikin, Dieter Horns, M. Tluczykont, L. G. Tkachev, V. Samoliga, O. Grishin, A. A. Grinyuk, S. Kiryuhin, V. V. Prosin, V.A. Tabolenko, V. Slunecka, Grigory Rubtsov, N. N. Kalmykov, A. Chiavassa, BayarJon Paul Lubsandorzhiev, I. I. Yashin, V. S. Ptuskin, N. Ushakov, E. A. Osipova, Andrey Sokolov, N. B. Lubsandorzhiev, D. Zhurov, M. Ternovoy, M. Brueckner, Pavel Bezyazeekov, R. Wischnewski, D. Voronin, Yulia Kazarina, L. V. Pankov, A.V. Igoshin, O. A. Gress, A. Garmash, Alexander Kryukov, A. Pan, A. Sidorenkov, V. A. Kozhin, L. G. Sveshnikova, A. Ivanova, Aleksandr Gafarov, N. M. Budnev, B. A. Tarashchansky, A. Vaidyanathan, A. A. Silaev, A. V. Zagorodnikov, A. N. Dyachok, Anatoly Lagutin, P. Volchugov, L. A. Kuzmichev, A. L. Pakhorukov, V. M. Grebenyuk, Mikhail Panasyuk, A. Tanaev, E. Popova, R. R. Mirgazov, Oleg Fedorov, A. Borodin, T. I. Gress, and E. V. Ryabov
Subjects: Physics, History, Scintillation, Muon, Physics::Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, Taiga, Astrophysics::Instrumentation and Methods for Astrophysics, Astronomy, Computer Science Applications, Education
Abstract: The Tunka-Grande and TAIGA-Muon arrays are the part of a single experimental complex, which also includes the Tunka-133 and TAIGA-HiSCORE (High Sensitivity COsmic Rays and gamma Explorer) wide-angle Cherenkov arrays, TAIGA-IACT array (Imaging Atmospheric Cherenkov Telescope) and Tunka-Rex radio antennas array (Tunka Radio Extension). This complex is located in the Tunka Valley (Buryatia Republic, Russia), 50 km from Lake Baikal. It is aimed at investigating the energy spectrum and mass composition of charged cosmic rays in the energy range 100 TeV - 1000 PeV, searching for diffuse gamma rays above 100 TeV and studying local sources of gamma rays with energies above 30 TeV. This report outlines 3 key points. The first is a description of the Tunka-Grande and TAIGA-Muon scintillation arrays. The second part presents preliminary results of the search for diffuse gamma rays with energies above 50 PeV according to the Tunka-Grande data. The third part is devoted to the prospects of the search for diffuse gamma rays with energies above 100 TeV using the TAIGA-Muon array.
Published: 2020
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43. First detection of gamma-ray sources at TeV energies with the first imaging air Cherenkov telescope of the TAIGA installation

Author: M. Popesku, V. S. Ptuskin, A. Pushnin, M. Slunecka, M. V. Lavrova, A. Petrukhin, M. Tluczykont, A. Silaev junior, Andrey Sokolov, Grigory Rubtsov, A. N. Dyachok, N. N. Kalmykov, L. A. Kuzmichev, B.A. Tarashansky, V. M. Grebenyuk, M. Ternovoy, N. Ushakov, O. A. Gress, V. A. Kozhin, O. G. Grishin, R. R. Mirgazov, V. Samoliga, A. Ivanova, L. V. Pankov, T. I. Gress, L. G. Sveshikova, N. B. Lubsandorzhiev, Y. Suvorkin, A. Borodin, Aleksandr Gafarov, Evgeny Postnikov, V. A. Poleschuk, E. A. Osipova, Mikhail Panasyuk, A. Bulan, Pavel Bezyazeekov, A. A. Silaev, A. V. Zagorodnikov, D. Zhurov, D. Voronin, A. Chiavassa, A. Porelli, V. V. Kindin, B. K. Lubsandorzhiev, R. Mirzoyan, V.A. Tabolenko, Y. Sagan, A. Yu. Garmash, E. A. Kravchenko, E. E. Korosteleva, L. G. Tkachev, R. P. Kokoulin, K. G. Kompaniets, A. V. Skurikhin, P. Volchugov, A. Pan, A. L. Pakhorukov, Evgenii V Rjabov, N. M. Budnev, A. Tanaev, A. Yu. Sidorenkov, Dieter Horns, A. Vaidyanathan, Roman Raikin, E.G. Popova, A. A. Grinyuk, R. Wischnewski, R. D. Monkhoev, I. I. Yashin, Alexander Kryukov, M. Brückner, Anatoly Lagutin, Yu. Lemeshev, S. Kiryuhin, V. V. Prosin, M. Blank, and I. I. Astapov
Subjects: Telescope, Physics, History, law, Astrophysics::High Energy Astrophysical Phenomena, Taiga, Astrophysics::Instrumentation and Methods for Astrophysics, Gamma ray, Astronomy, Cherenkov radiation, Computer Science Applications, Education, law.invention
Abstract: TAIGA array addresses gamma-ray astronomy at energies from a few TeV to several PeV as well as cosmic ray physics from 100 TeV to several EeV. A 1 km2 TAIGA setup will consist of 120 wide-angle detectors of the Cherenkov timing array TAIGA-HiSCORE and three imaging air Cherenkov telescopes with the field of view diameter of 9.6°. In this paper, first experimental results of the first operation stage are presented: signal detection from two gamma-ray sources, the Crab Nebula and Markarian 421, by the first IACT in stand-alone mode. The detected signal is shown to be in agreement with the Monte Carlo expectation. In future, gamma-ray signal will be detected by a larger number of TAIGA telescopes as well as the TAIGA-HiSCORE array, that is, in combined operation mode.
Published: 2020
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44. Optical Transients Detected by MASTER during LIGO/VIRGO O2 Set Event

Author: V. Lipunov, V. Kornilov, E. Gorbovskoy, D. Vlasenko, N. Tiurina, O. A. Gress, I. Gorbunov, P. Balanutsa, A. Pozdnyakov, D. Buckley, R. Podesta, R. Rebolo, M. Serra, F. Balakin, A. Chasovnikov, V. Topolev, K. Zhirkov, A. Kuznetsov, V. Vladimirov, A. Gabovich, D. Zimnukhov, D. Kuvshinov, F. Podesta, C. Francile, N. M. Budnev, Yu. Sergienko, A. Tlatov, and D. Cheryasov
Subjects: General Medicine
Abstract: We present MASTER observations from inspecting the large error-box associated with LIGO/Virgo G270590, and our observational strategy. MASTER observed 6292 square degrees inside the 3σ error box. We present new optical sources detected during this inspection.
Published: 2020
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45. Optical Transients Found by MASTER during the Observation of LIGO/VIRGO S200219ac Gravitational-wave Event

Author: V. Lipunov, V. Kornilov, D. Vlasenko, N. Tiurina, E. Gorbovskoy, O. A. Gress, I. Gorbunov, P. Balanutsa, D. Cheryasov, A. Pozdnyakov, D. Buckley, R. Podesta, R. Rebolo, M. Serra, F. Balakin, A. Chasovnikov, V. Topolev, K. Zhirkov, A. Kuznetsov, V. Vladimirov, V. Senik, A. Gabovich, F. Podesta, C. Francile, N. M. Budnev, Yu. Sergienko, A. Tlatov, V. Grinshpun, E. Minkina, and V. Yurkov
Subjects: General Medicine
Abstract: We present the results of MASTER Global Robotic Net optical observations of the region within the LIGO/Virgo S200219ac error-box, triggered during the O3 run. We observed 1124 square degrees inside the 3σ error box during a half month. We present the identified optical transients found during this study, which are not related to gravitational waves, and briefly discuss the MASTER observation strategy.
Published: 2020
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46. Development of a novel wide-angle gamma-ray imaging air Cherenkov telescope with SiPM-based camera for the TAIGA hybrid installation

Author: A. Chiavassa, E. A. Bonvech, Anatoly Lagutin, T. I. Gress, Dmitry Chernov, R. D. Monkhoev, R. Mirzoyan, Mihai Popescu, I. I. Yashin, A. Sidorenkov, L. G. Sveshnikova, D. Zhurov, V. Samoliga, V. A. Poleschuk, A. V. Skurikhin, A. Garmash, L. G. Tkachev, N. B. Lubsandorzhiev, E. A. Osipova, R. R. Mirgazov, D. Chernukh, Roman Raikin, Aleksandr Gafarov, Grigory Rubtsov, Oleg Fedorov, Pavel Bezyazeekov, N. N. Kalmykov, D. Voronin, Y. Sagan, A. A. Silaev, A. V. Zagorodnikov, Dieter Horns, A. A. Grinyuk, Mikhail Panasyuk, D. A. Podgrudkov, V. Vorobiov, A. Borodin, A. N. Dyachok, E. A. Kravchenko, B. K. Lubsandorzhiev, M. Brueckner, E. E. Korosteleva, O. A. Gress, A. Pushnin, B.A. Tarashansky, E. Popova, A. A. Petrukhin, Evgeny Postnikov, R. P. Kokoulin, P. Volchugov, V. A. Kozhin, A. L. Pakhorukov, V. V. Kindin, M. Tluczykont, A. Tanaev, Yulia Kazarina, I. I. Astapov, V.A. Tabolenko, R. Wischnewski, Yu. Lemeshev, V. Slunecka, E. Rybov, V. S. Ptuskin, S. Kiryuhin, V. V. Prosin, N. Ushakov, L. V. Pankov, L. M. Ternovoy, Andrey Sokolov, K. G. Kompaniets, A. Ivanova, A. Vaidyanathan, O. Grishin, A. Porelli, A. Pan, N. M. Budnev, L. A. Kuzmichev, V. M. Grebenyuk, Y. Suvorkin, and A. Krykov
Subjects: Physics, Data processing, business.industry, Gamma ray, Cosmic ray, Electromagnetic radiation, law.invention, Telescope, Optics, Silicon photomultiplier, Data acquisition, law, business, Instrumentation, Mathematical Physics, Cherenkov radiation
Published: 2020
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47. An approach for identification of ultrahigh energy extensive air showers with scintillation detectors at TAIGA experiment

Author: T. I. Gress, A. Chiavassa, E. Popova, Y. Suvorkin, E. A. Osipova, A. V. Skurikhin, Pavel Bezyazeekov, V. Slunecka, B.A. Tarashansky, V. A. Poleschuk, V. S. Ptuskin, V. Vorobyev, L. G. Tkachev, Mihai Popescu, Dieter Horns, D. Voronin, B. K. Lubsandorzhiev, M. Brueckner, Mikhail Panasyuk, D. Zhurov, D. Chernukh, A. Garmash, A. Ivanova, E. A. Kravchenko, E. E. Korosteleva, Y. Sagan, R. P. Kokoulin, N. B. Lubsandorzhiev, Andrey Sokolov, V. V. Lenok, V. Samoliga, L. G. Sveshnikova, A. Krykov, R. Wischnewski, R. Mirzoyan, A. Pushnin, A. Bulan, M. Tluczykont, P. Volchugov, A. L. Pakhorukov, Anatoly Lagutin, Roman Raikin, R. R. Mirgazov, A. Tanaev, O. A. Gress, L. A. Kuzmichev, V. M. Grebenyuk, A. Pan, Oleg Fedorov, V. A. Kozhin, V. V. Kindin, A. Porelli, N. M. Budnev, A. A. Grinyuk, A. Silaev junior, A. Borodin, R. D. Monkhoev, A. Vaidyanathan, K. G. Kompaniets, I. I. Yashin, A. Sidorenkov, O. Grishin, Aleksandr Gafarov, A. N. Dyachok, A. A. Silaev, A. V. Zagorodnikov, Evgeny Postnikov, N. Ushakov, A. A. Petrukhin, L. V. Pankov, Yulia Kazarina, L. M. Ternovoy, Yu. Lemeshev, S. Kiryuhin, V. V. Prosin, I. I. Astapov, Grigory Rubtsov, N. N. Kalmykov, E. Rybov, and V.A. Tabolenko
Subjects: Scintillation, Detector, Scintillation counter, Taiga, Measuring instrument, Environmental science, Cosmic ray, Ultrahigh energy, Instrumentation, Mathematical Physics, Particle detector, Remote sensing
Published: 2020
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48. First analysis of inclined air showers detected by Tunka-Rex

Author: R. R. Mirgazov, V. V. Prosin, A. Pakhorukov, V. Lenok, Frank G. Schröder, T. Marshalkina, E. A. Osipova, Aleksey Zagorodnikov, R. D. Monkhoev, Pavel Bezyazeekov, R. Hiller, Andreas Haungs, Dmitriy Kostunin, Matthias Kleifges, O. A. Gress, L. V. Pankov, L. A. Kuzmichev, Tim Huege, E. E. Korosteleva, O. Fedorov, N. B. Lubsandorzhiev, D. Chernykh, N. M. Budnev, D. Shipilov, and Y. Kazarina
Subjects: Physics, 010308 nuclear & particles physics, business.industry, Frequency band, Physics::Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, QC1-999, Astrophysics::Instrumentation and Methods for Astrophysics, FOS: Physical sciences, Cosmic ray, 01 natural sciences, Magnetic field, Antenna array, Optics, 0103 physical sciences, Physics::Accelerator Physics, ddc:530, 010306 general physics, business, Astrophysics - Instrumentation and Methods for Astrophysics, Instrumentation and Methods for Astrophysics (astro-ph.IM), Zenith
Abstract: The Tunka Radio Extension (Tunka-Rex) is a digital antenna array for the detection of radio emission from cosmic-ray air showers in the frequency band of 30 to 80 MHz and for primary energies above 100 PeV. The standard analysis of Tunka-Rex includes events with zenith angle of up to 50$^\circ$. This cut is determined by the efficiency of the external trigger. However, due to the air-shower footprint increasing with zenith angle and due to the more efficient generation of radio emission (the magnetic field in the Tunka valley is almost vertical), there are a number of ultra-high-energy inclined events detected by Tunka-Rex. In this work we present a first analysis of a subset of inclined events detected by Tunka-Rex. We estimate the energies of the selected events and test the efficiency of Tunka-Rex antennas for detection of inclined air showers., ARENA2018 proceedings
Published: 2019
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49. Present status and prospects of the Tunka Radio Extension

Author: R. D. Monkhoev, A. Pakhorukov, Andreas Haungs, Matthias Kleifges, V. V. Prosin, E. A. Osipova, Pavel Bezyazeekov, R. Hiller, L. V. Pankov, Dmitriy Kostunin, T. Marshalkina, Tim Huege, N. B. Lubsandorzhiev, O. A. Gress, V. Lenok, D. Chernykh, D. Shipilov, O. Fedorov, Frank G. Schröder, Y. Kazarina, N. M. Budnev, E. E. Korosteleva, L. A. Kuzmichev, and Aleksey Zagorodnikov
Subjects: High Energy Astrophysical Phenomena (astro-ph.HE), Physics, Muon, Physics::Instrumentation and Detectors, Frequency band, QC1-999, Astrophysics::High Energy Astrophysical Phenomena, Detector, Astrophysics::Instrumentation and Methods for Astrophysics, FOS: Physical sciences, Astronomy, Cosmic ray, Digital radio, Particle detector, Observatory, Physics::Accelerator Physics, ddc:530, Astrophysics - Instrumentation and Methods for Astrophysics, Astrophysics - High Energy Astrophysical Phenomena, Instrumentation and Methods for Astrophysics (astro-ph.IM), Radio wave
Abstract: The Tunka Radio Extension (Tunka-Rex) is a digital radio array operating in the frequency band of 30-80 MHz and detecting radio emission from air-showers produced by cosmic rays with energies above 100 PeV. The experiment is installed at the site of the TAIGA (Tunka Advanced Instrument for cosmic rays and Gamma Astronomy) observatory and performs joint measurements with the co-located particle and air-Cherenkov detectors in passive mode receiving a trigger from the latter. Tunka-Rex collects data since 2012, and during the last five years went through several upgrades. As a result the density of the antenna field was increased by three times since its commission. In this contribution we present the latest results of Tunka-Rex experiment, particularly an updated analysis and efficiency study, which have been applied to the measurement of the mean shower maximum as a function of energy for cosmic rays of energies up to EeV. The future plans are also discussed: investigations towards an energy spectrum of cosmic rays with Tunka-Rex and their mass composition using a combination of Tunka-Rex data with muon measurements by the particle detector Tunka-Grande., Comment: ARENA2018 proceedings
Published: 2019
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50. TAIGA—A hybrid array for high-energy gamma astronomy and cosmic-ray physics

Author: A. A. Petrukhin, E. A. Osipova, A. V. Skurikhin, A. Grinyuk, E. A. Kravchenko, D. Chernykh, E. E. Korosteleva, A. Garmash, R. P. Kokoulin, Dmitry Zhurov, Pavel Bezyazeekov, R. R. Mirgazov, B. A. Tarashchansky, Dieter Horns, Evgeny Postnikov, M. Popesku, Y. Suvorkin, Martin Tluczykont, S. Kiryuhin, Razmik Mirzoyan, O. Fedorov, V.A. Tabolenko, Konstantin Ustinov, A. Pakhorukov, A. Borodin, Aleksey Zagorodnikov, A. Chiavassa, V. Prosin, Valery Zurbanov, Bayarto Lubsandorzhiev, M. Slunecka, Y. Kazarina, L. G. Sveshnikova, I. V. Yashin, V. S. Ptuskin, Yaroslav Sagan, A. Pushnin, R. D. Monkhoev, Victor Grebenyuk, T. I. Gress, Dmitriy Kostunin, O. A. Gress, V. A. Poleschuk, N. M. Budnev, A. Silaev junior, E.G. Popova, A. Pan, D. Voronin, V. A. Kozhin, E. V. Ryabov, I. I. Astapov, V. V. Kindin, L. Tkachev, Roman Raikin, V. Samoliga, Ralf Wischnewski, L. A. Kuzmichev, A. Porelli, A. N. Dyachok, O. G. Grishin, Grigory Rubtsov, N. N. Kalmykov, Ch. Spiering, N. B. Lubsandorzhiev, A. Vaidyanathan, N. Ushakov, L. V. Pankov, K. Komponiets, A. Ivanova, Mikhail Panasyuk, Aleksandr Gafarov, A. A. Silaev, Alexander Kryukov, A. Sidorenkov, M. Brückner, Anatoly Lagutin, and A. Sokolov
Subjects: Physics, Nuclear and High Energy Physics, High energy, Physics::Instrumentation and Detectors, 010308 nuclear & particles physics, Astrophysics::High Energy Astrophysical Phenomena, Astrophysics::Instrumentation and Methods for Astrophysics, Astronomy, Cosmic ray, 7. Clean energy, 01 natural sciences, Observatory, Hybrid array, 0103 physical sciences, 010306 general physics, Instrumentation, Cherenkov radiation
Abstract: The combination of a wide angle timing Cherenkov array and Imaging Atmospheric Cherenkov Telescopes operated in mono mode offers a cost-effective way to construct a few square kilometers array for ultrahigh-energy gamma astronomy. The first stage of the TAIGA Observatory (Tunka Advanced Instrument for cosmic ray physics and Gamma Astronomy) is described here. It will comprise TAIGA-HiSCORE - 120 wide angle Cherenkov stations distributed over an area of 1.0 km2 and three IACTs (TAIGA-IACT).
Published: 2020
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