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248 results on '"Possenti A"'

1. The TRAPUM Small Magellanic Cloud pulsar survey with MeerKAT:I. Discovery of seven new pulsars and two Pulsar Wind Nebula associations

Author

Carli, E, primary, Levin, L, additional, Stappers, B W, additional, Barr, E D, additional, Breton, R P, additional, Buchner, S, additional, Burgay, M, additional, Geyer, M, additional, Kramer, M, additional, Padmanabh, P V, additional, Possenti, A, additional, Krishnan, V Venkatraman, additional, Becker, W, additional, Filipović, M D, additional, Maitra, C, additional, Behrend, J, additional, Champion, D J, additional, Chen, W, additional, Men, Y P, additional, and Ridolfi, A, additional

Published
2024
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2. A targeted radio pulsar survey of redback candidates with MeerKAT

Author

Thongmeearkom, T, primary, Clark, C J, additional, Breton, R P, additional, Burgay, M, additional, Nieder, L, additional, Freire, P C C, additional, Barr, E D, additional, Stappers, B W, additional, Ransom, S M, additional, Buchner, S, additional, Calore, F, additional, Champion, D J, additional, Cognard, I, additional, Grießmeier, J-M, additional, Kramer, M, additional, Levin, L, additional, Padmanabh, P V, additional, Possenti, A, additional, Ridolfi, A, additional, Krishnan, V Venkatraman, additional, and Vleeschower, L, additional

Published
2024
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4. The first X-ray polarimetric observation of the black hole binary LMC X-1

Author

Podgorný, J, primary, Marra, L, additional, Muleri, F, additional, Cavero, N Rodriguez, additional, Ratheesh, A, additional, Dovčiak, M, additional, Mikušincová, R, additional, Brigitte, M, additional, Steiner, J F, additional, Veledina, A, additional, Bianchi, S, additional, Krawczynski, H, additional, Svoboda, J, additional, Kaaret, P, additional, Matt, G, additional, García, J A, additional, Petrucci, P-O, additional, Lutovinov, A, additional, Semena, A, additional, Di Marco, A, additional, Negro, M, additional, Weisskopf, M C, additional, Ingram, A, additional, Poutanen, J, additional, Beheshtipour, B, additional, Chun, S, additional, Hu, K, additional, Mizuno, T, additional, Sixuan, Z, additional, Tombesi, F, additional, Zane, S, additional, Agudo, I, additional, Antonelli, L A, additional, Bachetti, M, additional, Baldini, L, additional, Baumgartner, W H, additional, Bellazzini, R, additional, Bongiorno, S D, additional, Bonino, R, additional, Brez, A, additional, Bucciantini, N, additional, Capitanio, F, additional, Castellano, S, additional, Cavazzuti, E, additional, Chen, C, additional, Ciprini, S, additional, Costa, E, additional, De Rosa, A, additional, Del Monte, E, additional, Di Gesu, L, additional, Di Lalla, N, additional, Donnarumma, I, additional, Doroshenko, V, additional, Ehlert, S R, additional, Enoto, T, additional, Evangelista, Y, additional, Fabiani, S, additional, Ferrazzoli, R, additional, Gunji, S, additional, Hayashida, K, additional, Heyl, J, additional, Iwakiri, W, additional, Jorstad, S G, additional, Karas, V, additional, Kislat, F, additional, Kitaguchi, T, additional, Kolodziejczak, J J, additional, Monaca, F La, additional, Latronico, L, additional, Liodakis, I, additional, Maldera, S, additional, Manfreda, A, additional, Marin, F, additional, Marinucci, A, additional, Marscher, A P, additional, Marshall, H L, additional, Massaro, F, additional, Mitsuishi, I, additional, Ng, C-Y, additional, O’Dell, S L, additional, Omodei, N, additional, Oppedisano, C, additional, Papitto, A, additional, Pavlov, G G, additional, Peirson, A L, additional, Perri, M, additional, Pesce-Rollins, M, additional, Pilia, M, additional, Possenti, A, additional, Puccetti, S, additional, Ramsey, B D, additional, Rankin, J, additional, Roberts, O J, additional, Romani, R W, additional, Sgró, C, additional, Slane, P, additional, Soffitta, P, additional, Spandre, G, additional, Swartz, D A, additional, Tamagawa, T, additional, Tavecchio, F, additional, Taverna, R, additional, Tawara, Y, additional, Tennant, A F, additional, Thomas, N E, additional, Trois, A, additional, Tsygankov, S S, additional, Turolla, R, additional, Vink, J, additional, Wu, K, additional, and Xie, F, additional

Published
2023
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8. Binary neutron star populations in the Milky Way

Author

Sgalletta, Cecilia, primary, Iorio, Giuliano, additional, Mapelli, Michela, additional, Artale, M Celeste, additional, Boco, Lumen, additional, Chattopadhyay, Debatri, additional, Lapi, Andrea, additional, Possenti, Andrea, additional, Rinaldi, Stefano, additional, and Spera, Mario, additional

Published
2023
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9. The X-ray polarization of the Seyfert 1 galaxy IC 4329A

Author

Ingram, A, primary, Ewing, M, additional, Marinucci, A, additional, Tagliacozzo, D, additional, Rosario, D J, additional, Veledina, A, additional, Kim, D E, additional, Marin, F, additional, Bianchi, S, additional, Poutanen, J, additional, Matt, G, additional, Marshall, H L, additional, Ursini, F, additional, De Rosa, A, additional, Petrucci, P-O, additional, Madejski, G, additional, Barnouin, T, additional, Gesu, L Di, additional, Dovčiak, M, additional, Gianolli, V E, additional, Krawczynski, H, additional, Loktev, V, additional, Middei, R, additional, Podgorny, J, additional, Puccetti, S, additional, Ratheesh, A, additional, Soffitta, P, additional, Tombesi, F, additional, Ehlert, S R, additional, Massaro, F, additional, Agudo, I, additional, Antonelli, L A, additional, Bachetti, M, additional, Baldini, L, additional, Baumgartner, W H, additional, Bellazzini, R, additional, Bongiorno, S D, additional, Bonino, R, additional, Brez, A, additional, Bucciantini, N, additional, Capitanio, F, additional, Castellano, S, additional, Cavazzuti, E, additional, Chen, C-T, additional, Ciprini, S, additional, Costa, E, additional, Del Monte, E, additional, Lalla, N Di, additional, Marco, A Di, additional, Donnarumma, I, additional, Doroshenko, V, additional, Enoto, T, additional, Evangelista, Y, additional, Fabiani, S, additional, Ferrazzoli, R, additional, García, J A, additional, Gunji, S, additional, Heyl, J, additional, Iwakiri, W, additional, Jorstad, S G, additional, Kaaret, P, additional, Karas, V, additional, Kislat, F, additional, Kitaguchi, T, additional, Kolodziejczak, J J, additional, Monaca, F La, additional, Latronico, L, additional, Liodakis, I, additional, Maldera, S, additional, Manfreda, A, additional, Marscher, A P, additional, Mitsuishi, I, additional, Mizuno, T, additional, Muleri, F, additional, Negro, M, additional, Ng, C-Y, additional, O’Dell, S L, additional, Omodei, N, additional, Oppedisano, C, additional, Papitto, A, additional, Pavlov, G G, additional, Peirson, A L, additional, Perri, M, additional, Pesce-Rollins, M, additional, Pilia, M, additional, Possenti, A, additional, Ramsey, B D, additional, Rankin, J, additional, Roberts, O J, additional, Romani, R W, additional, Sgrò, C, additional, Slane, P, additional, Spandre, G, additional, Swartz, D A, additional, Tamagawa, T, additional, Tavecchio, F, additional, Taverna, R, additional, Tawara, Y, additional, Tennant, A F, additional, Thomas, N E, additional, Trois, A, additional, Tsygankov, S S, additional, Turolla, R, additional, Vink, J, additional, Weisskopf, M C, additional, Wu, K, additional, Xie, F, additional, and Zane, S, additional

Published
2023
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10. The geometry of the hot corona in MCG-05-23-16 constrained by X-ray polarimetry

Author

Tagliacozzo, D, primary, Marinucci, A, additional, Ursini, F, additional, Matt, G, additional, Bianchi, S, additional, Baldini, L, additional, Barnouin, T, additional, Cavero Rodriguez, N, additional, De Rosa, A, additional, Di Gesu, L, additional, Dovčiak, M, additional, Harper, D, additional, Ingram, A, additional, Karas, V, additional, Kim, D E, additional, Krawczynski, H, additional, Madejski, G, additional, Marin, F, additional, Middei, R, additional, Marshall, H L, additional, Muleri, F, additional, Panagiotou, C, additional, Petrucci, P-O, additional, Podgorny, J, additional, Poutanen, J, additional, Puccetti, S, additional, Soffitta, P, additional, Tombesi, F, additional, Veledina, A, additional, Zhang, W, additional, Agudo, I, additional, Antonelli, L A, additional, Bachetti, M, additional, Baumgartner, W H, additional, Bellazzini, R, additional, Bongiorno, S D, additional, Bonino, R, additional, Brez, A, additional, Bucciantini, N, additional, Capitanio, F, additional, Castellano, S, additional, Cavazzuti, E, additional, Chen, C-T, additional, Ciprini, S, additional, Costa, E, additional, Del Monte, E, additional, Di Lalla, N, additional, Di Marco, A, additional, Donnarumma, I, additional, Doroshenko, V, additional, Ehlert, S R, additional, Enoto, T, additional, Evangelista, Y, additional, Fabiani, S, additional, Ferrazzoli, R, additional, Garcia, J A, additional, Gunji, S, additional, Heyl, J, additional, Iwakiri, W, additional, Jorstad, S G, additional, Kaaret, P, additional, Kislat, F, additional, Kitaguchi, T, additional, Kolodziejczak, J J, additional, La Monaca, F, additional, Latronico, L, additional, Liodakis, I, additional, Maldera, S, additional, Manfreda, A, additional, Marscher, A P, additional, Massaro, F, additional, Mitsuishi, I, additional, Mizuno, T, additional, Negro, M, additional, Ng, C-Y, additional, O’Dell, S L, additional, Omodei, N, additional, Oppedisano, C, additional, Papitto, A, additional, Pavlov, G G, additional, Peirson, A L, additional, Perri, M, additional, Pesce-Rollins, M, additional, Pilia, M, additional, Possenti, A, additional, Ramsey, B D, additional, Rankin, J, additional, Ratheesh, A, additional, Roberts, O J, additional, Romani, R W, additional, Sgrò, C, additional, Slane, P, additional, Spandre, G, additional, Swartz, D A, additional, Tamagawa, T, additional, Tavecchio, F, additional, Taverna, R, additional, Tawara, Y, additional, Tennant, A F, additional, Thomas, N E, additional, Trois, A, additional, Tsygankov, S S, additional, Turolla, R, additional, Vink, J, additional, Weisskopf, M C, additional, Wu, K, additional, Xie, F, additional, and Zane, S, additional

Published
2023
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11. Searches for Shapiro delay in seven binary pulsars using the MeerKAT telescope

Author

M Shamohammadi, M Bailes, P C C Freire, A Parthasarathy, D J Reardon, R M Shannon, V Venkatraman Krishnan, M C i Bernadich, A D Cameron, D J Champion, A Corongiu, C Flynn, M Geyer, M Kramer, M T Miles, A Possenti, and R Spiewak

Subjects
High Energy Astrophysical Phenomena (astro-ph.HE), Space and Planetary Science, FOS: Physical sciences, Astronomy and Astrophysics, Astrophysics - High Energy Astrophysical Phenomena
Abstract

Precision timing of millisecond pulsars in binary systems enables observers to detect the relativistic Shapiro delay induced by space time curvature. When favourably aligned, this enables constraints to be placed on the component masses and system orientation. Here we present the results of timing campaigns on seven binary millisecond pulsars observed with the 64-antenna MeerKAT radio telescope that show evidence of Shapiro delay: PSRs~J0101$-$6422, J1101$-$6424, J1125$-$6014, J1514$-$4946, J1614$-$2230, J1732$-$5049, and J1909$-$3744. Evidence for Shapiro delay was found in all of the systems, and for three the orientations and data quality enabled strong constraints on their orbital inclinations and component masses. For PSRs~J1125$-$6014, J1614$-$2230 and J1909$-$3744, we determined pulsar masses to be $M_{\rm p} = 1.68\pm 0.17 \, {\rm M_{\odot}} $, $1.94\pm 0.03 \, {\rm M_{\odot}} $ and $1.45 \pm 0.03 \, {\rm M_{\odot}}$, and companion masses to be $M_{\rm c} = 0.33\pm 0.02 \, {\rm M_{\odot}} $, $0.495\pm 0.005 \, {\rm M_{\odot}} $ and $0.205 \pm 0.003 \, {\rm M_{\odot}}$, respectively. This provides the first independent confirmation of PSR~J1614$-$2230's mass, one of the highest known. The Shapiro delays measured for PSRs~J0101$-$6422, J1101$-$6424, J1514$-$4946, and J1732$-$5049 were only weak, and could not provide interesting component mass limits. Despite a large number of millisecond pulsars being routinely timed, relatively few have accurate masses via Shapiro delays. We use simulations to show that this is expected, and provide a formula for observers to assess how accurately a pulsar mass can be determined. We also discuss the observed correlation between pulsar companion masses and spin period, and the anti-correlation between recycled pulsar mass and their companion masses., Comment: 19 pages, 8 figures

Published
2023

12. A MeerKAT look at the polarization of 47 Tucanae pulsars: magnetic field implications

Author

F Abbate, A Possenti, A Ridolfi, V Venkatraman Krishnan, S Buchner, E D Barr, M Bailes, M Kramer, A Cameron, A Parthasarathy, W van Straten, W Chen, F Camilo, P V Padmanabh, S A Mao, P C C Freire, S M Ransom, L Vleeschower, M Geyer, and L Zhang

Subjects
High Energy Astrophysical Phenomena (astro-ph.HE), Space and Planetary Science, FOS: Physical sciences, Astronomy and Astrophysics, Astrophysics - High Energy Astrophysical Phenomena
Abstract

We present the polarization profiles of 22 pulsars in the globular cluster 47 Tucanae using observations from the MeerKAT radio telescope at UHF-band (544-1088 MHz) and report precise values of dispersion measure (DM) and rotation measure (RM). We use these measurements to investigate the presence of turbulence in electron density and magnetic fields. The structure function of DM shows a break at $\sim 30$ arcsec ($\sim 0.6$ pc at the distance of 47 Tucanae) that suggests the presence of turbulence in the gas in the cluster driven by the motion of wind-shedding stars. On the other hand, the structure function of RM does not show evidence of a break. This non-detection could be explained either by the limited number of pulsars or by the effects of the intervening gas in the Galaxy along the line of sight. Future pulsar discoveries in the cluster could help confirm the presence and localise the turbulence., Accepted for publication in MNRAS, 14 pages, 6 figures

Published
2022

13. Variable scintillation arcs of millisecond pulsars observed with the Large European Array for Pulsars

Author

Main, R A, primary, Antoniadis, J, additional, Chen, S, additional, Cognard, I, additional, Hu, H, additional, Jang, J, additional, Karuppusamy, R, additional, Kramer, M, additional, Liu, K, additional, Liu, Y, additional, Mall, G, additional, McKee, J W, additional, Mickaliger, M B, additional, Perrodin, D, additional, Sanidas, S A, additional, Stappers, B W, additional, Sprenger, T, additional, Wucknitz, O, additional, Bassa, C G, additional, Burgay, M, additional, Concu, R, additional, Gaikwad, M, additional, Janssen, G H, additional, Lee, K J, additional, Melis, A, additional, Pilia, M, additional, Possenti, A, additional, Wang, L, additional, and Zhu, W W, additional

Published
2023
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14. X-ray polarimetry of X-ray pulsar X Persei: another orthogonal rotator?

Author

Mushtukov, A A, primary, Tsygankov, S S, additional, Poutanen, J, additional, Doroshenko, V, additional, Salganik, A, additional, Costa, E, additional, Marco, A Di, additional, Heyl, J, additional, Monaca, F La, additional, Lutovinov, A A, additional, Mereminsky, I A, additional, Papitto, A, additional, Semena, A N, additional, Shtykovsky, A E, additional, Suleimanov, V F, additional, Forsblom, S V, additional, González-Caniulef, D, additional, Malacaria, C, additional, Sunyaev, R A, additional, Agudo, I, additional, Antonelli, L A, additional, Bachetti, M, additional, Baldini, L, additional, Baumgartner, W H, additional, Bellazzini, R, additional, Bianchi, S, additional, Bongiorno, S D, additional, Bonino, R, additional, Brez, A, additional, Bucciantini, N, additional, Capitanio, F, additional, Castellano, S, additional, Cavazzuti, E, additional, Chen, C-T, additional, Ciprini, S, additional, De Rosa, A, additional, Del Monte, E, additional, Gesu, L Di, additional, Lalla, N Di, additional, Donnarumma, I, additional, Dovčiak, M, additional, Ehlert, S R, additional, Enoto, T, additional, Evangelista, Y, additional, Fabiani, S, additional, Ferrazzoli, R, additional, Garcia, J A, additional, Gunji, S, additional, Hayashida, K, additional, Iwakiri, W, additional, Jorstad, S G, additional, Kaaret, P, additional, Karas, V, additional, Kislat, F, additional, Kitaguchi, T, additional, Kolodziejczak, J J, additional, Krawczynski, H, additional, Latronico, L, additional, Liodakis, I, additional, Maldera, S, additional, Manfreda, A, additional, Marin, F, additional, Marscher, A P, additional, Marshall, H L, additional, Massaro, F, additional, Matt, G, additional, Mitsuishi, I, additional, Mizuno, T, additional, Muleri, F, additional, Negro, M, additional, Ng, C-Y, additional, O’Dell, S L, additional, Omodei, N, additional, Oppedisano, C, additional, Pavlov, G G, additional, Peirson, A L, additional, Perri, M, additional, Pesce-Rollins, M, additional, Petrucci, P-O, additional, Pilia, M, additional, Possenti, A, additional, Puccetti, S, additional, Ramsey, B D, additional, Rankin, J, additional, Ratheesh, A, additional, Roberts, O J, additional, Romani, R W, additional, Sgrò, C, additional, Slane, P, additional, Soffitta, P, additional, Spandre, G, additional, Swartz, D A, additional, Tamagawa, T, additional, Tavecchio, F, additional, Taverna, R, additional, Tawara, Y, additional, Tennant, A F, additional, Thomas, N E, additional, Tombesi, F, additional, Trois, A, additional, Turolla, R, additional, Vink, J, additional, Weisskopf, M C, additional, Wu, K, additional, Xie, F, additional, and Zane, S, additional

Published
2023
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16. Uncovering the geometry of the hot X-ray corona in the Seyfert galaxy NGC 4151 with IXPE

Author

Gianolli, V E, primary, Kim, D E, additional, Bianchi, S, additional, Agís-González, B, additional, Madejski, G, additional, Marin, F, additional, Marinucci, A, additional, Matt, G, additional, Middei, R, additional, Petrucci, P-O, additional, Soffitta, P, additional, Tagliacozzo, D, additional, Tombesi, F, additional, Ursini, F, additional, Barnouin, T, additional, De Rosa, A, additional, Di Gesu, L, additional, Ingram, A, additional, Loktev, V, additional, Panagiotou, C, additional, Podgorny, J, additional, Poutanen, J, additional, Puccetti, S, additional, Ratheesh, A, additional, Veledina, A, additional, Zhang, W, additional, Agudo, I, additional, Antonelli, L A, additional, Bachetti, M, additional, Baldini, L, additional, Baumgartner, W H, additional, Bellazzini, R, additional, Bongiorno, S D, additional, Bonino, R, additional, Brez, A, additional, Bucciantini, N, additional, Capitanio, F, additional, Castellano, S, additional, Cavazzuti, E, additional, Chen, C-T, additional, Ciprini, S, additional, Costa, E, additional, Del Monte, E, additional, Di Lalla, N, additional, Di Marco, A, additional, Donnarumma, I, additional, Doroshenko, V, additional, Dovčiak, M, additional, Ehlert, S R, additional, Enoto, T, additional, Evangelista, Y, additional, Fabiani, S, additional, Ferrazzoli, R, additional, García, J A, additional, Gunji, S, additional, Heyl, J, additional, Iwakiri, W, additional, Jorstad, S G, additional, Kaaret, P, additional, Karas, V, additional, Kislat, F, additional, Kitaguchi, T, additional, Kolodziejczak, J J, additional, Krawczynski, H, additional, La Monaca, F, additional, Latronico, L, additional, Liodakis, I, additional, Maldera, S, additional, Manfreda, A, additional, Marscher, A P, additional, Marshall, H L, additional, Massaro, F, additional, Mitsuishi, I, additional, Mizuno, T, additional, Muleri, F, additional, Negro, M, additional, Ng, C-Y, additional, O’Dell, S L, additional, Omodei, N, additional, Oppedisano, C, additional, Papitto, A, additional, Pavlov, G G, additional, Peirson, A L, additional, Perri, M, additional, Pesce-Rollins, M, additional, Pilia, M, additional, Possenti, A, additional, Ramsey, B D, additional, Rankin, J, additional, Roberts, O J, additional, Romani, R W, additional, Sgrò, C, additional, Slane, P, additional, Spandre, G, additional, Swartz, D A, additional, Tamagawa, T, additional, Tavecchio, F, additional, Taverna, R, additional, Tawara, Y, additional, Tennant, A F, additional, Thomas, N E, additional, Trois, A, additional, Tsygankov, S S, additional, Turolla, R, additional, Vink, J, additional, Weisskopf, M C, additional, Wu, K, additional, Xie, F, additional, and Zane, S, additional

Published
2023
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18. The first seven months of the 2020 X-ray outburst of the magnetar SGR J1935+2154

Author

A Borghese, F Coti Zelati, G L Israel, M Pilia, M Burgay, M Trudu, S Zane, R Turolla, N Rea, P Esposito, S Mereghetti, A Tiengo, and A Possenti

Subjects
Space and Planetary Science, Astronomy and Astrophysics
Abstract

The magnetar SGR J1935+2154 underwent a new active episode on 2020 April 27–28, when a forest of hundreds of X-ray bursts and a large enhancement of the persistent flux were detected. For the first time, a radio burst with properties similar to those of fast radio bursts and with a X-ray counterpart was observed from this source, showing that magnetars can power at least a group of fast radio bursts. In this paper, we report on the X-ray spectral and timing properties of SGR J1935+2154 based on a long-term monitoring campaign with Chandra, XMM–Newton, NuSTAR, Swift, and NICER covering a time-span of ∼7 months since the outburst onset. The broad-band spectrum exhibited a non-thermal power-law component (Γ ∼ 1.2) extending up to ∼20–25 keV throughout the campaign and a blackbody component with temperature decreasing from ∼1.5 keV at the outburst peak to ∼0.45 keV in the following months. We found that the luminosity decay is well described by the sum of two exponential functions, reflecting the fast decay (∼1 d) at the early stage of the outburst followed by a slower decrease (∼30 d). The source reached quiescence about ∼80 d after the outburst onset, releasing an energy of ∼6 × 1040 erg during the outburst. We detected X-ray pulsations in the XMM–Newton data sets and derived an average spin-down rate of ∼3.5 × 10−11 s s−1 using the spin period measurements derived in this work and three values reported previously during the same active period. Moreover, we report on simultaneous radio observations performed with the Sardinia Radio Telescope. No evidence for periodic or single-pulse radio emission was found.

Published
2022

19. Searching for continuous Gravitational Waves in the second data release of the International Pulsar Timing Array

Author

Falxa, M, primary, Babak, S, additional, Baker, P T, additional, Bécsy, B, additional, Chalumeau, A, additional, Chen, S, additional, Chen, Z, additional, Cornish, N J, additional, Guillemot, L, additional, Hazboun, J S, additional, Mingarelli, C M F, additional, Parthasarathy, A, additional, Petiteau, A, additional, Pol, N S, additional, Sesana, A, additional, Spolaor, S B, additional, Taylor, S R, additional, Theureau, G, additional, Vallisneri, M, additional, Vigeland, S J, additional, Witt, C A, additional, Zhu, X, additional, Antoniadis, J, additional, Arzoumanian, Z, additional, Bailes, M, additional, Bhat, N D R, additional, Blecha, L, additional, Brazier, A, additional, Brook, P R, additional, Caballero, N, additional, Cameron, A D, additional, Casey-Clyde, J A, additional, Champion, D, additional, Charisi, M, additional, Chatterjee, S, additional, Cognard, I, additional, Cordes, J M, additional, Crawford, F, additional, Cromartie, H T, additional, Crowter, K, additional, Dai, S, additional, DeCesar, M E, additional, Demorest, P B, additional, Desvignes, G, additional, Dolch, T, additional, Drachler, B, additional, Feng, Y, additional, Ferrara, E C, additional, Fiore, W, additional, Fonseca, E, additional, Garver-Daniels, N, additional, Glaser, J, additional, Goncharov, B, additional, Good, D C, additional, Griessmeier, J, additional, Guo, Y J, additional, Gültekin, K, additional, Hobbs, G, additional, Hu, H, additional, Islo, K, additional, Jang, J, additional, Jennings, R J, additional, Johnson, A D, additional, Jones, M L, additional, Kaczmarek, J, additional, Kaiser, A R, additional, Kaplan, D L, additional, Keith, M, additional, Kelley, L Z, additional, Kerr, M, additional, Key, J S, additional, Laal, N, additional, Lam, M T, additional, Lamb, W G, additional, Lazio, T J W, additional, Liu, K, additional, Liu, T, additional, Luo, J, additional, Lynch, R S, additional, Madison, D R, additional, Main, R, additional, Manchester, R, additional, McEwen, A, additional, McKee, J, additional, McLaughlin, M A, additional, Ng, C, additional, Nice, D J, additional, Ocker, S, additional, Olum, K D, additional, Osłowski, S, additional, Pennucci, T T, additional, Perera, B B P, additional, Perrodin, D, additional, Porayko, N, additional, Possenti, A, additional, Quelquejay-Leclere, H, additional, Ransom, S M, additional, Ray, P S, additional, Reardon, D J, additional, Russell, C J, additional, Samajdar, A, additional, Sarkissian, J, additional, Schult, L, additional, Shaifullah, G, additional, Shannon, R M, additional, Shapiro-Albert, B J, additional, Siemens, X, additional, Simon, J J, additional, Siwek, M, additional, Smith, T L, additional, Speri, L, additional, Spiewak, R, additional, Stairs, I H, additional, Stappers, B, additional, Stinebring, D R, additional, Swiggum, J K, additional, Tiburzi, C, additional, Turner, J, additional, Vecchio, A, additional, Verbiest, J P W, additional, Wahl, H, additional, Wang, S Q, additional, Wang, J, additional, Wu, Z, additional, Zhang, L, additional, and Zhang, S, additional

Published
2023
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20. Four pulsar discoveries in NGC 6624 by TRAPUM using MeerKAT

Author

F Abbate, A Ridolfi, E D Barr, S Buchner, M Burgay, D J Champion, W Chen, P C C Freire, T Gautam, J M Grießmeier, L Künkel, M Kramer, P V Padmanabh, A Possenti, S Ransom, M Serylak, B W Stappers, V Venkatraman Krishnan, J Behrend, R P Breton, L Levin, and Y Men

Subjects
High Energy Astrophysical Phenomena (astro-ph.HE), stars: neutron, Space and Planetary Science, pulsars: general, FOS: Physical sciences, Astronomy and Astrophysics, Astrophysics - High Energy Astrophysical Phenomena, globular clusters: individual: NGC
Abstract

We report 4 new pulsars discovered in the core-collapsed globular cluster (GC) NGC 6624 by the TRAPUM Large Survey Project with the MeerKAT telescope. All of the new pulsars found are isolated. PSR J1823$-$3021I and PSR J1823$-$3021K are millisecond pulsars with period of respectively 4.319 ms and 2.768 ms. PSR J1823$-$3021J is mildly recycled with a period of 20.899 ms, and PSR J1823$-$3022 is a long period pulsar with a period of 2.497 s. The pulsars J1823$-$3021I, J1823$-$3021J, and J1823$-$3021K have position and dispersion measure (DM) compatible with being members of the GC and are therefore associated with NGC 6624. Pulsar J1823$-$3022 is the only pulsar bright enough to be re-detected in archival observations of the cluster. This allowed the determination of a timing solution that spans over two decades. It is not possible at the moment to claim the association of pulsar J1823$-$3022 with the GC given the long period and large offset in position ($\sim 3$ arcminutes) and DM (with a fractional difference of 11 percent compared the average of the pulsars in NGC 6624). The discoveries made use of the beamforming capability of the TRAPUM backend to generate multiple beams in the same field of view which allows sensitive searches to be performed over a few half-light radii from the cluster center and can simultaneously localise the discoveries. The discoveries reflect the properties expected for pulsars in core-collapsed GCs., Accepted for publication on Monthly Notices of the Royal Astronomical Society. 11 pages, 6 figures

Published
2022

21. The High Time Resolution Universe Pulsar Survey – XVII. PSR J1325−6253, a low eccentricity double neutron star system from an ultra-stripped supernova

Author

R Sengar, V Balakrishnan, S Stevenson, M Bailes, E D Barr, N D R Bhat, M Burgay, M C i Bernadich, A D Cameron, D J Champion, W Chen, C M L Flynn, A Jameson, S Johnston, M J Keith, M Kramer, V Morello, C Ng, A Possenti, B Stappers, R M Shannon, W van Straten, and J Wongphechauxsorn

Subjects
High Energy Astrophysical Phenomena (astro-ph.HE), Astrophysics - Solar and Stellar Astrophysics, Space and Planetary Science, Astrophysics::High Energy Astrophysical Phenomena, FOS: Physical sciences, Astrophysics::Solar and Stellar Astrophysics, Astronomy and Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, Astrophysics::Earth and Planetary Astrophysics, Astrophysics - High Energy Astrophysical Phenomena, Solar and Stellar Astrophysics (astro-ph.SR), Astrophysics::Galaxy Astrophysics
Abstract

The observable population of double neutron star (DNS) systems in the Milky Way allow us to understand the nature of supernovae and binary stellar evolution. Until now, all DNS systems in wide orbits ($ P_{\textrm{orb}}>$ 1~day) have been found to have orbital eccentricities, $e > 0.1$. In this paper, we report the discovery of pulsar PSR J1325$-$6253: a DNS system in a 1.81 day orbit with a surprisingly low eccentricity of just $e = 0.064$. Through 1.4 yr of dedicated timing with the Parkes radio telescope we have been able to measure its rate of advance of periastron, $\dotω=0.138 \pm 0.002$ $\rm deg$ $\rm yr^{-1}$. If this induced $\dotω$ is solely due to general relativity then the total mass of the system is, $M_{\rm sys} = 2.57 \pm 0.06$ M$_{\odot}$. Assuming an edge-on orbit the minimum companion mass is constrained to be $M_\mathrm{c,min}>0.98$ M$_{\odot}$ which implies the pulsar mass is $M_\mathrm{p,max}1.3$ M$_\odot$), then the companion neutron star is probably less than $\sim1.25$ M$_\odot$ and the system is inclined at about $50^{\circ}$-$60^{\circ}$. The low eccentricity along with the wide orbit of the system strongly favours a formation scenario involving an ultra-stripped supernova explosion., 12 pages, 7 figures, 1 table, accepted for publication in MNRAS

Published
2022

22. MeerKAT discovery of 13 new pulsars in Omega Centauri

Author

Chen, W, primary, Freire, P C C, additional, Ridolfi, A, additional, Barr, E D, additional, Stappers, B, additional, Kramer, M, additional, Possenti, A, additional, Ransom, S M, additional, Levin, L, additional, Breton, R P, additional, Burgay, M, additional, Camilo, F, additional, Buchner, S, additional, Champion, D J, additional, Abbate, F, additional, Venkatraman Krishnan, V, additional, Padmanabh, P V, additional, Gautam, T, additional, Vleeschower, L, additional, Geyer, M, additional, Grießmeier, J-M, additional, Men, Y P, additional, Balakrishnan, V, additional, and Bezuidenhout, M C, additional

Published
2023
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23. The TRAPUM L-band survey for pulsars in Fermi-LAT gamma-ray sources

Author

Clark, C J, primary, Breton, R P, additional, Barr, E D, additional, Burgay, M, additional, Thongmeearkom, T, additional, Nieder, L, additional, Buchner, S, additional, Stappers, B, additional, Kramer, M, additional, Becker, W, additional, Mayer, M, additional, Phosrisom, A, additional, Ashok, A, additional, Bezuidenhout, M C, additional, Calore, F, additional, Cognard, I, additional, Freire, P C C, additional, Geyer, M, additional, Grießmeier, J-M, additional, Karuppusamy, R, additional, Levin, L, additional, Padmanabh, P V, additional, Possenti, A, additional, Ransom, S, additional, Serylak, M, additional, Venkatraman Krishnan, V, additional, Vleeschower, L, additional, Behrend, J, additional, Champion, D J, additional, Chen, W, additional, Horn, D, additional, Keane, E F, additional, Künkel, L, additional, Men, Y, additional, Ridolfi, A, additional, Dhillon, V S, additional, Marsh, T R, additional, and Papa, M A, additional

Published
2023
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24. Searches for Shapiro delay in seven binary pulsars using the MeerKAT telescope

Author

Shamohammadi, M, primary, Bailes, M, additional, Freire, P C C, additional, Parthasarathy, A, additional, Reardon, D J, additional, Shannon, R M, additional, Venkatraman Krishnan, V, additional, Bernadich, M C i, additional, Cameron, A D, additional, Champion, D J, additional, Corongiu, A, additional, Flynn, C, additional, Geyer, M, additional, Kramer, M, additional, Miles, M T, additional, Possenti, A, additional, and Spiewak, R, additional

Published
2023
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25. Accretion geometry of the neutron star low mass X-ray binary Cyg X-2 from X-ray polarization measurements

Author

Farinelli, R, primary, Fabiani, S, additional, Poutanen, J, additional, Ursini, F, additional, Ferrigno, C, additional, Bianchi, S, additional, Cocchi, M, additional, Capitanio, F, additional, De Rosa, A, additional, Gnarini, A, additional, Kislat, F, additional, Matt, G, additional, Mikusincova, R, additional, Muleri, F, additional, Agudo, I, additional, Antonelli, L A, additional, Bachetti, M, additional, Baldini, L, additional, Baumgartner, W H, additional, Bellazzini, R, additional, Bongiorno, S D, additional, Bonino, R, additional, Brez, A, additional, Bucciantini, N, additional, Castellano, S, additional, Cavazzuti, E, additional, Ciprini, S, additional, Costa, E, additional, Del Monte, E, additional, Di Gesu, L, additional, Di Lalla, N, additional, Di Marco, A, additional, Donnarumma, I, additional, Doroshenko, V, additional, Dovčiak, M, additional, Ehlert, S R, additional, Enoto, T, additional, Evangelista, Y, additional, Ferrazzoli, R, additional, Garcia, J A, additional, Gunji, S, additional, Hayashida, K, additional, Heyl, J, additional, Iwakiri, W, additional, Jorstad, S G, additional, Karas, V, additional, Kitaguchi, T, additional, Kolodziejczak, J J, additional, Krawczynski, H, additional, La Monaca, F, additional, Latronico, L, additional, Liodakis, I, additional, Maldera, S, additional, Manfreda, A, additional, Marin, F, additional, Marscher, A P, additional, Marshall, H L, additional, Mitsuishi, I, additional, Mizuno, T, additional, Ng, C-Y, additional, O’Dell, S L, additional, Omodei, N, additional, Oppedisano, C, additional, Papitto, A, additional, Pavlov, G G, additional, Peirson, A L, additional, Perri, M, additional, Pesce-Rollins, M, additional, Petrucci, P O, additional, Pilia, M, additional, Possenti, A, additional, Puccetti, S, additional, Ramsey, B D, additional, Rankin, J, additional, Ratheesh, A, additional, Romani, R W, additional, Sgrò, C, additional, Slane, P, additional, Soffitta, P, additional, Spandre, G, additional, Tamagawa, T, additional, Tavecchio, F, additional, Taverna, R, additional, Tawara, Y, additional, Tennant, A F, additional, Thomas, N E, additional, Tombesi, F, additional, Trois, A, additional, Tsygankov, S S, additional, Turolla, R, additional, Vink, J, additional, Weisskopf, M C, additional, Wu, K, additional, Xie, F, additional, and Zane, S, additional

Published
2022
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26. A MeerKAT look at the polarization of 47 Tucanae pulsars: magnetic field implications

Author

Abbate, F, primary, Possenti, A, additional, Ridolfi, A, additional, Venkatraman Krishnan, V, additional, Buchner, S, additional, Barr, E D, additional, Bailes, M, additional, Kramer, M, additional, Cameron, A, additional, Parthasarathy, A, additional, van Straten, W, additional, Chen, W, additional, Camilo, F, additional, Padmanabh, P V, additional, Mao, S A, additional, Freire, P C C, additional, Ransom, S M, additional, Vleeschower, L, additional, Geyer, M, additional, and Zhang, L, additional

Published
2022
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27. Mapping the circumnuclear regions of the Circinus galaxy with the Imaging X-ray Polarimetry Explorer

Author

Ursini, F, primary, Marinucci, A, additional, Matt, G, additional, Bianchi, S, additional, Marin, F, additional, Marshall, H L, additional, Middei, R, additional, Poutanen, J, additional, Rogantini, D, additional, De Rosa, A, additional, Di Gesu, L, additional, García, J A, additional, Ingram, A, additional, Kim, D E, additional, Krawczynski, H, additional, Puccetti, S, additional, Soffitta, P, additional, Svoboda, J, additional, Tombesi, F, additional, Weisskopf, M C, additional, Barnouin, T, additional, Perri, M, additional, Podgorny, J, additional, Ratheesh, A, additional, Zaino, A, additional, Agudo, I, additional, Antonelli, L A, additional, Bachetti, M, additional, Baldini, L, additional, Baumgartner, W H, additional, Bellazzini, R, additional, Bongiorno, S D, additional, Bonino, R, additional, Brez, A, additional, Bucciantini, N, additional, Capitanio, F, additional, Castellano, S, additional, Cavazzuti, E, additional, Ciprini, S, additional, Costa, E, additional, Del Monte, E, additional, Di Lalla, N, additional, Di Marco, A, additional, Donnarumma, I, additional, Doroshenko, V, additional, Dovciak, M, additional, Ehlert, S R, additional, Enoto, T, additional, Evangelista, Y, additional, Fabiani, S, additional, Ferrazzoli, R, additional, Gunji, S, additional, Heyl, J, additional, Iwakiri, W, additional, Jorstad, S G, additional, Karas, V, additional, Kitaguchi, T, additional, Kolodziejczak, J J, additional, La Monaca, F, additional, Latronico, L, additional, Liodakis, I, additional, Maldera, S, additional, Manfreda, A, additional, Marscher, A P, additional, Mitsuishi, I, additional, Mizuno, T, additional, Muleri, F, additional, Ng, C Y, additional, O’Dell, S L, additional, Omodei, N, additional, Oppedisano, C, additional, Papitto, A, additional, Pavlov, G G, additional, Peirson, A L, additional, Pesce-Rollins, M, additional, Petrucci, P-O, additional, Pilia, M, additional, Possenti, A, additional, Ramsey, B D, additional, Rankin, J, additional, Romani, R W, additional, Sgrò, C, additional, Slane, P, additional, Spandre, G, additional, Tamagawa, T, additional, Tavecchio, F, additional, Taverna, R, additional, Tawara, Y, additional, Tennant, A F, additional, Thomas, N E, additional, Trois, A, additional, Tsygankov, S S, additional, Turolla, R, additional, Vink, J, additional, Wu, K, additional, Xie, F, additional, and Zane, S, additional

Published
2022
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28. Histological Features Associated With Human Mpox Virus Infection in 2022 Outbreak in a Nonendemic Country

Author

Chalali, Faris, primary, Merlant, Marie, additional, Truong, Audrey, additional, Ghosn, Jade, additional, Phung, Bao-Chau, additional, Mollo, Bastien, additional, Perrineau, Ségolène, additional, Rahi, Mayda, additional, Fidouh-Houhou, Nadhira, additional, Ferré, Valentine Marie, additional, Brunet-Possenti, Florence, additional, Descamps, Vincent, additional, Bouscarat, Fabrice, additional, Yazdanpanah, Yazdan, additional, Deschamps, Lydia, additional, and Bertin, Chloé, additional

Published
2022
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29. Health literacy and gender differences in colorectal cancer screening

Author

P Zanobini, C Lorini, M Giusti, V Minardi, V Possenti, M Masocco, G Mereu, R Cecconi, and G Bonaccorsi

Subjects
Public Health, Environmental and Occupational Health
Abstract

Introduction Colorectal cancer (CRC) is one of the major causes of death worldwide. Previous research reported differences in screening adherence both by gender and socioeconomic determinants. However, little is known about the extent to which Health Literacy (HL) may affect gender differences in CRC screening rates. Here, we aimed to assess HL levels in both genders and their relations with CRC screening adherence. Methods The study was performed within the Tuscan population sample selected in the Italian Behavioral Risk Factor Surveillance System (PASSI - Progress by local health units toward a healthier Italy) in 2017-2019. Socioeconomic status was measured by education level, occupation, financial status, and nationality, while HL by the Italian version of the 6-items European Health Literacy Survey Questionnaire (HLS-EU-Q6). Multivariate analysis was performed to investigate associations between CRC screening rates, social determinants, and HL. Results Among 4,268 people aged 50-69 years included in PASSI, 64% undergo to CRC screening in the 2 years preceding the interview. No statistically significant differences in screening adherence were found by gender. In the multivariate analysis, the odds of adherence to CRC screening increased in both genders for being aged 60-69 years (Males: OR 1.43, 95% CI 1.12-1.82; Females: OR 1.72, 95% CI 1.37-2.14) and high education level (Males: OR 1.34, 95% CI 1.08-1.66; Females: OR 1.30, 95% CI 1.05-1.60). Males with a poor financial status and females with a low HL level were less likely to undergo CRC screening (OR 0.71, 95% CI 0.57-0.88 and OR 0.68 95% CI 0.49-0.95 respectively). Conclusions Our findings suggest that adherence to CRC screening is associated with HL in females only, while it depends on financial status in males. Therefore, gender specific interventions, tailored on different factors, are needed to increase the CRC screening rates. Key messages

Published
2022

30. P06-10 To what extent is active mobility practiced by adults in Italy?

Author

Valentina Minardi, Valentina Possenti, Benedetta Contoli, Susanna Lana, Stefano Campostrini, Giuliano Carrozzi, Angelo D'Argenzio, Pirous Fateh-Moghadam, Mauro Ramigni, Massimo Oddone Trinito, and Maria Masocco

Subjects
Public Health, Environmental and Occupational Health
Abstract

Background Walking or cycling regularly instead of using motorised vehicles returns benefits not only to our health but also to the environment: in Europe, during 2020 a spotlight has also been put on the importance of accessibility to zero-emission transport, for promoting an inclusive framework that involves everyone. Policies in favour of a diffused active mobility in the general population encourage also to take steps effectively in order to achieve the longer-term goal of a European continent that is carbon-neutral. Methods In the Italian Behavioural Risk Factor Surveillance System PASSI, active mobility identifies both adults (aged 18-69) who cycle or walk to go to work or to school or for their usual commuting and those who, thanks to this habit, reach out recommended levels of physical activity to gain health benefits. Basing on their own active mobility levels, people are classified in: physically active (they reach out at least 150 minutes per week by walking or cycling for usual commuting, in bouts of at least 10 minutes); partially active (they use bicycle and/or walk usually, but not till 150 minutes weekly); non-active (they do not practise any active mobility or they do for little time duration). Results PASSI data 2016-2019 show that 44% among adults residing in Italy has practised active mobility by cycling (11%) and/or walking (41%) for usual commuting. They do in average for 4-5 days per week: people who cycle and those who walk sum up an average of, respectively, 144 and 181 minutes weekly. In the North, active mobility is experienced more than in the other parts of the Country. Active mobility definitively contributes to reach out recommended levels of physical activity that ensure health benefits and, in Italy, 21% of the resident adult population results to be physically active just thanks to this healthy lifestyle. Conclusions Walking or cycling for urban commuting, at least for 150 minutes per week in bouts of 10 minutes each, can help to meet the recommendations for physical activity by the WHO, without counting movement in spare time or at work.

Published
2022

31. P06-08 Socio-demographic profile of physically inactive adults living in Italy according to the PASSI data

Author

Valentina Minardi, Valentina Possenti, Rosaria Gallo, Benedetta Contoli, Susanna Lana, and Maria Masocco

Subjects
Public Health, Environmental and Occupational Health
Abstract

Background Insufficient physical activity (PA) or physical inactivity (PI) is one of the ten leading risk factors for global mortality. PI leads to 20-30% increased risk of all-cause mortality and monitoring its current levels and trends in general population is essential to track progress towards health targets, identify at-risk groups, assess policies' effectiveness, guide future planning. Methods PASSI (Progressi delle Aziende Sanitarie per la Salute in Italia - Progresses in ASSessing adult population health in Italy) is an ongoing cross-sectional Behavioral Risk Factor Surveillance System (BRFSS) that monitors prevalence and temporal trends for the major modifiable health-related risk factors in the adults (18-69 years) residing in Italy. Data are collected in the Local Health Units (LHU) by trained personnel who administer a standardized questionnaire telephonically to sampled people. In the period 2015-2018, 132,717 people were interviewed in more of 90% LHUs (89 out of 101 in 2018), achieving a response rate above 80%. Concerning PA/PI, respondents are classified as per the WHO indicators in: (i) Active - basing on levels achieved in leisure time and/or heavy work; (ii) Partially active - in leisure time and/or moderate work or in spare time and without regular work; (iii) Inactive - in leisure time with sedentary work or in spare time and without regular work. PASSI calculates prevalence of PA/PI overall and by socio-demographic characteristics, including 95% confidence intervals (CI), and a logistic regression model estimates adjusted prevalence ratios (APR). Results In Italy, 28.8% (CI95%:28.5-29.1%) of adult population is featured by a sedentary lifestyle: PI is greater among women (32.4% vs. 25.1%; APR: 1.26), grows with age (34% in over50 vs. 24.7% among 18-34 year-old; APR: 1.34), is higher among deprived people both per economic difficulties (41.7% if many vs. 22.4% if none; APR: 1.39) and for education level (23.7% university vs. 47.2% primary/any; APR: 1.33). We observed a highly evident geographic gradient: PI amounts to 18.3% in the North, 25.2% in the Centre and 40.6% in the South. A multivariate analysis confirms these values are statistically significant. Conclusions PASSI data provide strong evidence to support community prevention interventions on territorial planning or advice by health professionals.

Published
2022

32. P04-13 How actively older persons age in Italy?

Author

Benedetta Contoli, Valentina Possenti, Valentina Minardi, Nicoletta Bertozzi, Giuliano Carrozzi, Marco Cristofori, Amalia Maria Carmela De Luca, Pirous Fateh-Moghadam, Mauro Ramigni, Massimo Oddone Trinito, and Maria Masocco

Subjects
Public Health, Environmental and Occupational Health
Abstract

Background One scope of the Active and Healthy Ageing framework is to increase awareness on elderly-related topics. The year 2020 has seen an upheaval across the world caused by the COVID-19 emergence, even higher to older persons. Methods In Italy, data gathered by the PASSI d'Argento behavioural surveillance system on general population aged 65+ in the timeframe 2016-2019 describe health conditions, lifestyles and care needs for elderly. Results Basing on physical activity recommended by the WHO globally, 33% of non-physically impaired older persons reaches out those levels, 27% are partially active, 40% is sedentary. 9% fell down within 30 days prior the interview, accessing hospital was necessary in 19% of cases; 64% of falling occurred at home, 20% outdoor. 61% refers at least one infrastructural housing issue, 15% perceive higher neighbourhood insecurity. 35% reported difficulties in accessing essential services, especially to local health premises and for necessities. About 19% lives socially isolated, 21% had not any contact (neither by phone) with anyone in a typical week, 71% do not attend collective meetings, such as at a club or church. Nearby 1 out of 3 (29%) represents an asset to the own family/community: 19% looks after cohabiting people, 14% relatives or friends not living together with, 6% engage in volunteering. Participation in training courses or social events (trips/stays organised) regards little more than 2 over65 out of 10: 5% partakes in learning courses, 23% enjoyed those latest occasions. Such low social connectedness is observed even among «younger elderly» (aged 65-74). Nearly 19% referred frailty impacting on their own families mainly, 94% of frail elderly is given help from relatives, 20% from professional caregivers, 12% from acquaintances. All these factors suffer from socio-economic and territorial differences. Among elderly reporting many economic difficulties, social isolation is 31%, frailty 28%, difficult access to services 58%, falling 15%, with a geographic gradient at the expense of the Southern Regions. Conclusions COVID-19 is a clear threat to older persons: in Italy, monitoring ageing dimensions under the pandemic scenario represents even a greater opportunity to have scientific data which describe the impact of health emergency on elderly.

Published
2022

33. TRAPUM upper limits on pulsed radio emission for SMC X-ray pulsar J0058−7218

Author

Carli, E, primary, Levin, L, additional, Stappers, B W, additional, Barr, E D, additional, Breton, R P, additional, Buchner, S, additional, Burgay, M, additional, Kramer, M, additional, Padmanabh, P V, additional, Possenti, A, additional, Venkatraman Krishnan, V, additional, Behrend, J, additional, Champion, D J, additional, Chen, W, additional, and Men, Y P, additional

Published
2022
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35. Polarization constraints on the X-ray corona in Seyfert Galaxies: MCG-05-23-16

Author

Marinucci, A, primary, Muleri, F, additional, Dovciak, M, additional, Bianchi, S, additional, Marin, F, additional, Matt, G, additional, Ursini, F, additional, Middei, R, additional, Marshall, H L, additional, Baldini, L, additional, Barnouin, T, additional, Rodriguez, N Cavero, additional, De Rosa, A, additional, Di Gesu, L, additional, Harper, D, additional, Ingram, A, additional, Karas, V, additional, Krawczynski, H, additional, Madejski, G, additional, Panagiotou, C, additional, Petrucci, P O, additional, Podgorny, J, additional, Puccetti, S, additional, Tombesi, F, additional, Veledina, A, additional, Zhang, W, additional, Agudo, I, additional, Antonelli, L A, additional, Bachetti, M, additional, Baumgartner, W H, additional, Bellazzini, R, additional, Bongiorno, S D, additional, Bonino, R, additional, Brez, A, additional, Bucciantini, N, additional, Capitanio, F, additional, Castellano, S, additional, Cavazzuti, E, additional, Ciprini, S, additional, Costa, E, additional, Del Monte, E, additional, Di Lalla, N, additional, Di Marco, A, additional, Donnarumma, I, additional, Doroshenko, V, additional, Ehlert, S R, additional, Enoto, T, additional, Evangelista, Y, additional, Fabiani, S, additional, Ferrazzoli, R, additional, Garcia, J A, additional, Gunji, S, additional, Hayashida, K, additional, Heyl, J, additional, Iwakiri, W, additional, Jorstad, S G, additional, Kitaguchi, T, additional, Kolodziejczak, J J, additional, La Monaca, F, additional, Latronico, L, additional, Liodakis, I, additional, Maldera, S, additional, Manfreda, A, additional, Marscher, A P, additional, Mitsuishi, I, additional, Mizuno, T, additional, Ng, C-Y, additional, O’Dell, S L, additional, Omodei, N, additional, Oppedisano, C, additional, Papitto, A, additional, Pavlov, G G, additional, Peirson, A L, additional, Perri, M, additional, Pesce-Rollins, M, additional, Pilia, M, additional, Possenti, A, additional, Poutanen, J, additional, Ramsey, B D, additional, Rankin, J, additional, Ratheesh, A, additional, Romani, R W, additional, Sgrš, C, additional, Slane, P, additional, Soffitta, P, additional, Spandre, G, additional, Tamagawa, T, additional, Tavecchio, F, additional, Taverna, R, additional, Tawara, Y, additional, Tennant, A F, additional, Thomas, N E, additional, Trois, A, additional, Tsygankov, S S, additional, Turolla, R, additional, Vink, J, additional, Weisskopf, M C, additional, Wu, K, additional, Xie, F, additional, and Zane, S, additional

Published
2022
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36. P06-10 To what extent is active mobility practiced by adults in Italy?

Author

Minardi, Valentina, primary, Possenti, Valentina, additional, Contoli, Benedetta, additional, Lana, Susanna, additional, Campostrini, Stefano, additional, Carrozzi, Giuliano, additional, D'Argenzio, Angelo, additional, Fateh-Moghadam, Pirous, additional, Ramigni, Mauro, additional, Trinito, Massimo Oddone, additional, and Masocco, Maria, additional

Published
2022
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37. P04-13 How actively older persons age in Italy?

Author

Contoli, Benedetta, primary, Possenti, Valentina, additional, Minardi, Valentina, additional, Bertozzi, Nicoletta, additional, Carrozzi, Giuliano, additional, Cristofori, Marco, additional, De Luca, Amalia Maria Carmela, additional, Fateh-Moghadam, Pirous, additional, Ramigni, Mauro, additional, Trinito, Massimo Oddone, additional, and Masocco, Maria, additional

Published
2022
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39. An analysis of the time-frequency structure of several bursts from FRB 121102 detected with MeerKAT

Author

Jonathan P. Shock, A. Possenti, L. Rhodes, Kaustubh Rajwade, Vincent Morello, Jingwen Wu, R. A. Main, Amanda Weltman, Fabian Jankowski, M. Caleb, Benjamin Stappers, Mechiel Christiaan Bezuidenhout, Emma Platts, and Michael Kramer

Subjects
High Energy Astrophysical Phenomena (astro-ph.HE), astro-ph.HE, Physics, 010308 nuclear & particles physics, Astrophysics::High Energy Astrophysical Phenomena, Gaussian, Autocorrelation, Frequency drift, Phase (waves), FOS: Physical sciences, Astronomy and Astrophysics, Astrophysics, 01 natural sciences, Measure (mathematics), Galaxy, symbols.namesake, Pulsar, Space and Planetary Science, 0103 physical sciences, Dispersion (optics), symbols, Astrophysics - High Energy Astrophysical Phenomena, 010303 astronomy & astrophysics
Abstract

We present a detailed study of the complex time-frequency structure of a sample of previously reported bursts of FRB 121102 detected with the MeerKAT telescope in September 2019. The wide contiguous bandwidth of these observations have revealed a complex bifurcating structure in some bursts at $1250$ MHz. When de-dispersed to their structure-optimised dispersion measures, two of the bursts show a clear deviation from the cold plasma dispersion relationship below $1250$ MHz. We find a differential dispersion measure of ${\sim}1{-}2$ pc cm$^{-3}$ between the lower and higher frequency regions of each burst. We investigate the possibility of plasma lensing by Gaussian lenses of ${\sim}10$ AU in the host galaxy, and demonstrate that they can qualitatively produce some of the observed burst morphologies. Other possible causes for the observed frequency dependence, such as Faraday delay, are also discussed. Unresolved sub-components in the bursts, however, may have led to an incorrect DM determination. We hence advise exercising caution when considering bursts in isolation. We analyse the presence of two apparent burst pairs. One of these pairs is a potential example of upward frequency drift. The possibility that burst pairs are echoes is also discussed. The average structure-optimised dispersion measure is found to be $563.5\pm 0.2 (\text{sys}) \pm 0.8 (\text{stat})$ pc cm$^{-3}$ $-$ consistent with the values reported in 2018. We use two independent methods to determine the structure-optimised dispersion measure of the bursts: the DM_phase algorithm and autocorrelation functions. The latter $-$ originally developed for pulsar analysis $-$ is applied to FRBs for the first time in this paper., 13 pages, 12 figures. Accepted for publication in MNRAS

Published
2021

41. Detection of quasi-periodic micro-structure in three millisecond pulsars with the Large European Array for Pulsars

Author

Liu, K, primary, Antoniadis, J, additional, Bassa, C G, additional, Chen, S, additional, Cognard, I, additional, Gaikwad, M, additional, Hu, H, additional, Jang, J, additional, Janssen, G H, additional, Karuppusamy, R, additional, Kramer, M, additional, Lee, K J, additional, Main, R A, additional, Mall, G, additional, McKee, J W, additional, Mickaliger, M B, additional, Perrodin, D, additional, Sanidas, S A, additional, Stappers, B W, additional, Wang, L, additional, Zhu, W W, additional, Burgay, M, additional, Concu, R, additional, Corongiu, A, additional, Melis, A, additional, Pilia, M, additional, and Possenti, A, additional

Published
2022
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42. Four pulsar discoveries in NGC 6624 by TRAPUM using MeerKAT

Author

Abbate, F, primary, Ridolfi, A, additional, Barr, E D, additional, Buchner, S, additional, Burgay, M, additional, Champion, D J, additional, Chen, W, additional, Freire, P C C, additional, Gautam, T, additional, Grießmeier, J M, additional, Künkel, L, additional, Kramer, M, additional, Padmanabh, P V, additional, Possenti, A, additional, Ransom, S, additional, Serylak, M, additional, Stappers, B W, additional, Venkatraman Krishnan, V, additional, Behrend, J, additional, Breton, R P, additional, Levin, L, additional, and Men, Y, additional

Published
2022
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43. The northern cross fast radio burst project - II. monitoring of repeating FRB 20180916B, 20181030A, 20200120E and 20201124A

Author

Trudu, M, primary, Pilia, M, additional, Bernardi, G, additional, Addis, A, additional, Bianchi, G, additional, Magro, A, additional, Naldi, G, additional, Pelliciari, D, additional, Pupillo, G, additional, Setti, G, additional, Bortolotti, C, additional, Casentini, C, additional, Dallacasa, D, additional, Gajjar, V, additional, Locatelli, N, additional, Lulli, R, additional, Maccaferri, G, additional, Mattana, A, additional, Michilli, D, additional, Perini, F, additional, Possenti, A, additional, Roma, M, additional, Schiaffino, M, additional, Tavani, M, additional, and Verrecchia, F, additional

Published
2022
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44. Discoveries and Timing of Pulsars in NGC 6440

Author

Vleeschower, L, primary, Stappers, B W, additional, Bailes, M, additional, Barr, E D, additional, Kramer, M, additional, Ransom, S, additional, Ridolfi, A, additional, Krishnan, V Venkatraman, additional, Possenti, A, additional, Keith, M J, additional, Burgay, M, additional, Freire, P C C, additional, Spiewak, R, additional, Champion, D J, additional, Bezuidenhout, M C, additional, Niţu, I C, additional, Chen, W, additional, Parthasarathy, A, additional, DeCesar, M E, additional, Buchner, S, additional, Stairs, I H, additional, and Hessels, J W T, additional

Published
2022
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45. The High Time Resolution Universe Pulsar Survey – XVII. PSR J1325−6253, a low eccentricity double neutron star system from an ultra-stripped supernova

Author

Sengar, R, primary, Balakrishnan, V, additional, Stevenson, S, additional, Bailes, M, additional, Barr, E D, additional, Bhat, N D R, additional, Burgay, M, additional, Bernadich, M C i, additional, Cameron, A D, additional, Champion, D J, additional, Chen, W, additional, Flynn, C M L, additional, Jameson, A, additional, Johnston, S, additional, Keith, M J, additional, Kramer, M, additional, Morello, V, additional, Ng, C, additional, Possenti, A, additional, Stappers, B, additional, Shannon, R M, additional, van Straten, W, additional, and Wongphechauxsorn, J, additional

Published
2022
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46. The SUrvey for pulsars and extragalactic radio bursts V: recent discoveries and full timing solutions

Author

Matthew Bailes, Evan Keane, Chris Flynn, Vincent Morello, Simon Johnston, Renée Spiewak, Ewan Barr, Michael Kramer, Shivani Bhandari, M. Burgay, V. Venkatraman Krishnan, Fabian Jankowski, and A. Possenti

Subjects
High Energy Astrophysical Phenomena (astro-ph.HE), Physics, 010308 nuclear & particles physics, Astrophysics::High Energy Astrophysical Phenomena, Astrophysics::Instrumentation and Methods for Astrophysics, FOS: Physical sciences, Astronomy, Astronomy and Astrophysics, 01 natural sciences, Methods observational, Radio telescope, Fast folding algorithm, Pulsar, Space and Planetary Science, Millisecond pulsar, 0103 physical sciences, Astrophysics - High Energy Astrophysical Phenomena, 010303 astronomy & astrophysics, Astrophysics::Galaxy Astrophysics
Abstract

The SUrvey for Pulsars and Extragalactic Radio Bursts ran from 2014 April to 2019 August, covering a large fraction of the southern hemisphere at mid- to high-galactic latitudes, and consisting of 9-minute pointings taken with the 20-cm multibeam receiver on the Parkes Radio Telescope. Data up to 2017 September 21 have been searched using standard Fourier techniques, single-pulse searches, and Fast Folding Algorithm searches. We present 19 new discoveries, bringing the total to 27 discoveries in the programme, and we report the results of follow-up timing observations at Parkes for 26 of these pulsars, including the millisecond pulsar PSR J1421-4409; the faint, highly-modulated, slow pulsar PSR J1646-1910; and the nulling pulsar PSR J1337-4441. We present new timing solutions for 23 pulsars, and we report flux densities, modulation indices, and polarization properties., Comment: Accepted to MNRAS; data available at https://doi.org/10.5281/zenodo.3900980

Published
2020

47. DRT111/SFPS Splicing Factor Controls Abscisic Acid Sensitivity during Seed Development and Germination

Author

Stefania Grillo, Giorgia Batelli, Roberta Nurcato, Giorgio Morelli, Paola Punzo, Giorgio Perrella, Marco Possenti, Alessandra Ruggiero, and Antonello Costa

Subjects
0106 biological sciences, Arabidopsis thaliana, DNA Ligases, Physiology, Population, Arabidopsis, seed germination, Germination, Plant Science, 01 natural sciences, transcriptomics, Splicing factor, chemistry.chemical_compound, Gene Expression Regulation, Plant, Genetics, education, News and Views, Abscisic acid, Research Articles, education.field_of_study, light signaling, biology, Phytochrome, Arabidopsis Proteins, fungi, food and beverages, biology.organism_classification, Cell biology, chemistry, pre-mRNA splicing, Seeds, RNA splicing, Photomorphogenesis, RNA Splicing Factors, Abscisic Acid, 010606 plant biology & botany
Abstract

RNA splicing is a fundamental mechanism contributing to the definition of the cellular protein population in any given environmental condition. DNA-DAMAGE REPAIR/TOLERATION PROTEIN111 (DRT111)/SPLICING FACTOR FOR PHYTOCHROME SIGNALING is a splicing factor previously shown to interact with phytochrome B and characterized for its role in splicing of pre-mRNAs involved in photomorphogenesis. Here, we show that DRT111 interacts with Arabidopsis (Arabidopsis thaliana) Splicing Factor1, involved in 3′ splicing site recognition. Double- and triple-mutant analysis shows that DRT111 controls splicing of ABI3 and acts upstream of the splicing factor SUPPRESSOR OF ABI3–ABI5. DRT111 is highly expressed in seeds and stomata of Arabidopsis and is induced by long-term treatments of polyethylene glycol and abscisic acid (ABA). DRT111 knock-out mutants are defective in ABA-induced stomatal closure and are hypersensitive to ABA during seed germination. Conversely, DRT111 overexpressing plants show ABA-hyposensitive seed germination. RNA-sequencing experiments show that in dry seeds, DRT111 controls expression and splicing of genes involved in osmotic-stress and ABA responses, light signaling, and mRNA splicing, including targets of ABSCISIC ACID INSENSITIVE3 (ABI3) and PHYTOCHROME INTERACTING FACTORs (PIFs). Consistently, expression of the germination inhibitor SOMNUS, induced by ABI3 and PIF1, is upregulated in imbibed seeds of drt111-2 mutants. Together, these results indicate that DRT111 controls sensitivity to ABA during seed development, germination, and stomatal movements, and integrates ABA- and light-regulated pathways to control seed germination.

Published
2020

48. The International Pulsar Timing Array second data release: Search for an isotropic gravitational wave background

Author

Antoniadis, J, primary, Arzoumanian, Z, additional, Babak, S, additional, Bailes, M, additional, Bak Nielsen, A-S, additional, Baker, P T, additional, Bassa, C G, additional, Bécsy, B, additional, Berthereau, A, additional, Bonetti, M, additional, Brazier, A, additional, Brook, P R, additional, Burgay, M, additional, Burke-Spolaor, S, additional, Caballero, R N, additional, Casey-Clyde, J A, additional, Chalumeau, A, additional, Champion, D J, additional, Charisi, M, additional, Chatterjee, S, additional, Chen, S, additional, Cognard, I, additional, Cordes, J M, additional, Cornish, N J, additional, Crawford, F, additional, Cromartie, H T, additional, Crowter, K, additional, Dai, S, additional, DeCesar, M E, additional, Demorest, P B, additional, Desvignes, G, additional, Dolch, T, additional, Drachler, B, additional, Falxa, M, additional, Ferrara, E C, additional, Fiore, W, additional, Fonseca, E, additional, Gair, J R, additional, Garver-Daniels, N, additional, Goncharov, B, additional, Good, D C, additional, Graikou, E, additional, Guillemot, L, additional, Guo, Y J, additional, Hazboun, J S, additional, Hobbs, G, additional, Hu, H, additional, Islo, K, additional, Janssen, G H, additional, Jennings, R J, additional, Johnson, A D, additional, Jones, M L, additional, Kaiser, A R, additional, Kaplan, D L, additional, Karuppusamy, R, additional, Keith, M J, additional, Kelley, L Z, additional, Kerr, M, additional, Key, J S, additional, Kramer, M, additional, Lam, M T, additional, Lamb, W G, additional, Lazio, T J W, additional, Lee, K J, additional, Lentati, L, additional, Liu, K, additional, Luo, J, additional, Lynch, R S, additional, Lyne, A G, additional, Madison, D R, additional, Main, R A, additional, Manchester, R N, additional, McEwen, A, additional, McKee, J W, additional, McLaughlin, M A, additional, Mickaliger, M B, additional, Mingarelli, C M F, additional, Ng, C, additional, Nice, D J, additional, Osłowski, S, additional, Parthasarathy, A, additional, Pennucci, T T, additional, Perera, B B P, additional, Perrodin, D, additional, Petiteau, A, additional, Pol, N S, additional, Porayko, N K, additional, Possenti, A, additional, Ransom, S M, additional, Ray, P S, additional, Reardon, D J, additional, Russell, C J, additional, Samajdar, A, additional, Sampson, L M, additional, Sanidas, S, additional, Sarkissian, J M, additional, Schmitz, K, additional, Schult, L, additional, Sesana, A, additional, Shaifullah, G, additional, Shannon, R M, additional, Shapiro-Albert, B J, additional, Siemens, X, additional, Simon, J, additional, Smith, T L, additional, Speri, L, additional, Spiewak, R, additional, Stairs, I H, additional, Stappers, B W, additional, Stinebring, D R, additional, Swiggum, J K, additional, Taylor, S R, additional, Theureau, G, additional, Tiburzi, C, additional, Vallisneri, M, additional, van der Wateren, E, additional, Vecchio, A, additional, Verbiest, J P W, additional, Vigeland, S J, additional, Wahl, H, additional, Wang, J B, additional, Wang, J, additional, Wang, L, additional, Witt, C A, additional, Zhang, S, additional, and Zhu, X J, additional

Published
2022
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49. Modelling annual scintillation arc variations in PSR J1643−1224 using the Large European Array for Pulsars

Author

Mall, G, primary, Main, R A, additional, Antoniadis, J, additional, Bassa, C G, additional, Burgay, M, additional, Chen, S, additional, Cognard, I, additional, Concu, R, additional, Corongiu, A, additional, Gaikwad, M, additional, Hu, H, additional, Janssen, G H, additional, Karuppusamy, R, additional, Kramer, M, additional, Lee, K J, additional, Liu, K, additional, McKee, J W, additional, Melis, A, additional, Mickaliger, M B, additional, Perrodin, D, additional, Pilia, M, additional, Possenti, A, additional, Reardon, D J, additional, Sanidas, S A, additional, Sprenger, T, additional, Stappers, B W, additional, Wang, L, additional, Wucknitz, O, additional, and Zhu, W W, additional

Published
2022
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50. Noise analysis in the European Pulsar Timing Array data release 2 and its implications on the gravitational-wave background search

Author

Chalumeau, A, primary, Babak, S, additional, Petiteau, A, additional, Chen, S, additional, Samajdar, A, additional, Caballero, R N, additional, Theureau, G, additional, Guillemot, L, additional, Desvignes, G, additional, Parthasarathy, A, additional, Liu, K, additional, Shaifullah, G, additional, Hu, H, additional, van der Wateren, E, additional, Antoniadis, J, additional, Bak Nielsen, A-S, additional, Bassa, C G, additional, Berthereau, A, additional, Burgay, M, additional, Champion, D J, additional, Cognard, I, additional, Falxa, M, additional, Ferdman, R D, additional, Freire, P C C, additional, Gair, J R, additional, Graikou, E, additional, Guo, Y J, additional, Jang, J, additional, Janssen, G H, additional, Karuppusamy, R, additional, Keith, M J, additional, Kramer, M, additional, Lee, K J, additional, Liu, X J, additional, Lyne, A G, additional, Main, R A, additional, McKee, J W, additional, Mickaliger, M B, additional, Perera, B B P, additional, Perrodin, D, additional, Porayko, N K, additional, Possenti, A, additional, Sanidas, S A, additional, Sesana, A, additional, Speri, L, additional, Stappers, B W, additional, Tiburzi, C, additional, Vecchio, A, additional, Verbiest, J P W, additional, Wang, J, additional, Wang, L, additional, and Xu, H, additional

Published
2021
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