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5 results on '"B.T. Stokes"'

1. The energy spectrum of cosmic rays measured by the Telescope Array using 10 years of fluorescence detector data

Author

R.U. Abbasi, Y. Abe, T. Abu-Zayyad, M. Allen, Y. Arai, R. Arimura, E. Barcikowski, J.W. Belz, D.R. Bergman, S.A. Blake, I. Buckland, B.G. Cheon, M. Chikawa, A. Fedynitch, T. Fujii, K. Fujisue, K. Fujita, R. Fujiwara, M. Fukushima, G. Furlich, Z. Gerber, N. Globus, W. Hanlon, N. Hayashida, H. He, R. Hibi, K. Hibino, R. Higuchi, K. Honda, D. Ikeda, N. Inoue, T. Ishii, H. Ito, D. Ivanov, A. Iwasaki, H.M. Jeong, S. Jeong, C.C.H. Jui, K. Kadota, F. Kakimoto, O. Kalashev, K. Kasahara, S. Kasami, S. Kawakami, K. Kawata, I. Kharuk, E. Kido, H.B. Kim, J.H. Kim, S.W. Kim, Y. Kimura, I. Komae, K. Komori, Y. Kusumori, M. Kuznetsov, Y.J. Kwon, K.H. Lee, M.J. Lee, B. Lubsandorzhiev, J.P. Lundquist, T. Matsuyama, J.A. Matthews, J.N. Matthews, R. Mayta, K. Miyashita, K. Mizuno, M. Mori, M. Murakami, I. Myers, S. Nagataki, K. Nakai, T. Nakamura, E. Nishio, T. Nonaka, S. Ogio, H. Ohoka, N. Okazaki, Y. Oku, T. Okuda, Y. Omura, M. Onishi, M. Ono, A. Oshima, H. Oshima, S. Ozawa, I.H. Park, K.Y. Park, M. Potts, M.S. Pshirkov, J. Remington, D.C. Rodriguez, C. Rott, G.I. Rubtsov, D. Ryu, H. Sagawa, R. Saito, N. Sakaki, T. Sako, N. Sakurai, D. Sato, K. Sato, S. Sato, K. Sekino, P.D. Shah, N. Shibata, T. Shibata, J. Shikita, H. Shimodaira, B.K. Shin, H.S. Shin, D. Shinto, J.D. Smith, P. Sokolsky, B.T. Stokes, T.A. Stroman, Y. Takagi, K. Takahashi, M. Takamura, M. Takeda, R. Takeishi, A. Taketa, M. Takita, Y. Tameda, K. Tanaka, M. Tanaka, S.B. Thomas, G.B. Thomson, P. Tinyakov, I. Tkachev, H. Tokuno, T. Tomida, S. Troitsky, R. Tsuda, Y. Tsunesada, S. Udo, F. Urban, I.A. Vaiman, D. Warren, T. Wong, K. Yamazaki, K. Yashiro, F. Yoshida, Y. Zhezher, and Z. Zundel

Subjects
Astronomy and Astrophysics
Published
2023
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2. The hybrid energy spectrum of Telescope Array’s Middle Drum Detector and surface array

Author

R.U. Abbasi, M. Abe, T. Abu-Zayyad, M.G. Allen, R. Anderson, R. Azuma, E. Barcikowski, J.W. Belz, D.R. Bergman, S.A. Blake, R. Cady, M.J. Chae, B.G. Cheon, J. Chiba, M. Chikawa, W.R. Cho, T. Fujii, M. Fukushima, T. Goto, W. Hanlon, Y. Hayashi, N. Hayashida, K. Hibino, K. Honda, D. Ikeda, N. Inoue, T. Ishii, R. Ishimori, H. Ito, D. Ivanov, C.C.H. Jui, K. Kadota, F. Kakimoto, O. Kalashev, K. Kasahara, H. Kawai, S. Kawakami, S. Kawana, K. Kawata, E. Kido, H.B. Kim, J.H. Kim, S. Kitamura, Y. Kitamura, V. Kuzmin, Y.J. Kwon, J. Lan, S.I. Lim, J.P. Lundquist, K. Machida, K. Martens, T. Matsuda, T. Matsuyama, J.N. Matthews, M. Minamino, K. Mukai, I. Myers, K. Nagasawa, S. Nagataki, T. Nakamura, T. Nonaka, A. Nozato, S. Ogio, J. Ogura, M. Ohnishi, H. Ohoka, K. Oki, T. Okuda, M. Ono, A. Oshima, S. Ozawa, I.H. Park, M.S. Pshirkov, D.C. Rodriguez, G. Rubtsov, D. Ryu, H. Sagawa, N. Sakurai, A.L. Sampson, L.M. Scott, P.D. Shah, F. Shibata, T. Shibata, H. Shimodaira, B.K. Shin, H.S. Shin, J.D. Smith, P. Sokolsky, R.W. Springer, B.T. Stokes, S.R. Stratton, T.A. Stroman, T. Suzawa, M. Takamura, M. Takeda, R. Takeishi, A. Taketa, M. Takita, Y. Tameda, H. Tanaka, K. Tanaka, M. Tanaka, S.B. Thomas, G.B. Thomson, P. Tinyakov, I. Tkachev, H. Tokuno, T. Tomida, S. Troitsky, Y. Tsunesada, K. Tsutsumi, Y. Uchihori, S. Udo, F. Urban, G. Vasiloff, T. Wong, R. Yamane, H. Yamaoka, K. Yamazaki, J. Yang, K. Yashiro, Y. Yoneda, S. Yoshida, H. Yoshii, R. Zollinger, and Z. Zundel

Subjects
Physics, Physics::Instrumentation and Detectors, business.industry, Astrophysics::High Energy Astrophysical Phenomena, Detector, Astrophysics::Instrumentation and Methods for Astrophysics, Astronomy and Astrophysics, Cosmic ray, Drum, Scintillator, law.invention, Telescope, Optics, Air shower, law, Ultra-high-energy cosmic ray, business, Energy (signal processing)
Abstract

The Telescope Array experiment studies ultra high energy cosmic rays using a hybrid detector. Fluorescence telescopes measure the longitudinal development of the extensive air shower generated when a primary cosmic ray particle interacts with the atmosphere. Meanwhile, scintillator detectors measure the lateral distribution of secondary shower particles that hit the ground. The Middle Drum (MD) fluorescence telescope station consists of 14 telescopes from the High Resolution Fly’s Eye (HiRes) experiment, providing a direct link back to the HiRes measurements. Using the scintillator detector data in conjunction with the telescope data improves the geometrical reconstruction of the showers significantly, and hence, provides a more accurate reconstruction of the energy of the primary particle. The Middle Drum hybrid spectrum is presented and compared to that measured by the Middle Drum station in monocular mode. Further, the hybrid data establishes a link between the Middle Drum data and the surface array. A comparison between the Middle Drum hybrid energy spectrum and scintillator Surface Detector (SD) spectrum is also shown.

Published
2015
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3. Evaluation of a high or low level of milk replacer, with or without varied intake, on neonatal Holstein calf performance and health

Author

T.T. Wurtz, B.T. Stokes, A.R. Vogstad, K.C. Spence, Glenn C Duff, M.A. Hoyt, and K.A. Perz

Subjects
Animal science, Increased BUN, Starter, business.industry, Daily intake, Medicine, Animal Science and Zoology, Treatment factors, business, Feces, Food Science
Abstract

Neonatal Holstein bull calves (n = 30; age ~ 1 wk; average BW = 39 ± 5.4 kg) were allocated randomly in a 2 × 2 factorial arrangement to evaluate a high or low level of 28% CP, 18% fat milk replacer (MR), with or without varied intake, on calf performance and health. Treatment factors included (1) level (high = 1.13 kg/d or low = 0.45 kg/d) and (2) daily intake (constant or varied). Calves were purchased in 2 blocks and followed for 35 d (block 1) and 42 d (block 2). Intake data and fecal scores were recorded daily; BW data and blood samples were collected weekly. Feeding a high level of milk replacer improved ADG (0.962 vs. 0.858 kg/d), reduced calf starter DMI (0.392 vs. 0.929 kg/d), increased BUN levels (11.62 vs. 9.77 mg/dL; P

Published
2015
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4. Monocular measurement of the spectrum of UHE cosmic rays by the FADC detector of the HiRes experiment

Author

R.U. Abbasi, T. Abu-Zayyad, J.F. Amman, G.C. Archbold, J.A. Bellido, K. Belov, J.W. Belz, D.R. Bergman, Z. Cao, R.W. Clay, M.D. Cooper, H. Dai, B.R. Dawson, A.A. Everett, J.H.V. Girard, R.C. Gray, W.F. Hanlon, C.M. Hoffman, M.H. Holzscheiter, P. Hüntemeyer, B.F. Jones, C.C.H. Jui, D.B. Kieda, K. Kim, M.A. Kirn, E.C. Loh, N. Manago, L.J. Marek, K. Martens, G. Martin, J.A.J. Matthews, J.N. Matthews, J.R. Meyer, S.A. Moore, P. Morrison, A.N. Moosman, J.R. Mumford, M.W. Munro, C.A. Painter, L. Perera, K. Reil, R. Riehle, M. Roberts, J.S. Sarracino, S. Schnetzer, P. Shen, K.M. Simpson, G. Sinnis, J.D. Smith, P. Sokolsky, C. Song, R.W. Springer, B.T. Stokes, S.B. Thomas, T.N. Thompson, G.B. Thomson, D. Tupa, S. Westerhoff, L.R. Wiencke, T.D. VanderVeen, A. Zech, and X. Zhang

Subjects
Physics, Monocular, 010308 nuclear & particles physics, Astrophysics::High Energy Astrophysical Phenomena, Monte Carlo method, Detector, Spectrum (functional analysis), ComputingMethodologies_IMAGEPROCESSINGANDCOMPUTERVISION, Astronomy and Astrophysics, Cosmic ray, Astrophysics, Flash ADC, 01 natural sciences, Spectral line, High Energy Physics - Experiment, 3. Good health, 0103 physical sciences, Calibration, 010306 general physics
Abstract

We have measured the spectrum of UHE cosmic rays using the Flash ADC (FADC) detector (called HiRes-II) of the High Resolution Fly's Eye experiment running in monocular mode. We describe in detail the data analysis, development of the Monte Carlo simulation program, and results. We also describe the results of the HiRes-I detector. We present our measured spectra and compare them with a model incorporating galactic and extragalactic cosmic rays. Our combined spectra provide strong evidence for the existence of the spectral feature known as the ``ankle.'', Comment: 25 pages, 16 figures. Accepted by Astroparticle Physics, accepted version

Published
2005
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5. Search for ultra-high energy photons and neutrinos using Telescope Array surface detector

Author

Sergey Troitsky, Grigory Rubtsov, Dmitri Ivanov, Gordon Thomson, Masaki Fukushima, and B.T. Stokes

Subjects
Surface (mathematics), History, Photon, QC1-999, Astrophysics::High Energy Astrophysical Phenomena, Flux, Astrophysics, Photon energy, 7. Clean energy, 01 natural sciences, Education, law.invention, Telescope, Optics, Computer Science::Systems and Control, law, 0103 physical sciences, 010306 general physics, Physics, 010308 nuclear & particles physics, business.industry, Detector, Gamma ray, Astronomy, Computer Science Applications, High energy photon, 13. Climate action, Scintillation counter, Neutrino, business, Energy (signal processing)
Abstract

We search for ultra-high energy photons by analyzing geometrical properties of shower fronts of events registered by the Telescope Array surface detector. By making use of an event-by-event statistical method, we derive upper limits on the absolute flux of primary photons with energies above 1019 eV, 1019.5 eV and above 1020 eV based on the three years data from Telescope Array surface detector (May 2008 – May 2011). We report the results of down-going neutrino search based on the analysis of very inclined events.

Published
2013
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