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Observation of the anisotropy of 10 TeV primary cosmic ray nuclei flux with the Super-Kamiokande-I detector

G. Guillian, J. Hosaka, K. Ishihara, J. Kameda, Y. Koshio, A. Minamino, C. Mitsuda, M. Miura, S. Moriyama, M. Nakahata, T. Namba, Y. Obayashi (+105 others)
2007 Physical Review D  

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Other Versions

2005 pre-print
arXiv:astro-ph/0508468v1 fatcat:fih6djuza5g6tot562nflwrq7a
2007 pre-print
arXiv:astro-ph/0508468v3 fatcat:u46em5vi2ngzfa7qrk7olqj5qa
2007 accepted
arXiv:astro-ph/0508468v4 fatcat:dohzqno465csfhskvtvazfbzr4
2006 pre-print
arXiv:astro-ph/0508468v2 fatcat:qefyjhkvxfbwjh4vbpg7ugs46u
The relative sidereal variation in the arrival direction of primary cosmic ray nuclei of median energy 10 TeV was measured using downward, through-going muons detected with the Super-Kamiokande-I detector. The projection of the anisotropy map onto the right ascension axis has a first harmonic amplitude of (6.64 ± 0.98 stat.± 0.55 syst.) × 10^-4 and a phase at maximum at (33.2^∘± 8.2^∘stat.± 5.1^∘syst.) right ascension. A sky map in equatorial coordinates indicates an excess region in the
more » ... lation of Taurus and a deficit region toward Virgo. The excess region is centered at (α_T, δ_T) = (75^∘± 7^∘, -5^∘± 9^∘) with a half opening angle χ_T = (39 ± 7)^∘; the excess flux is (0.104 ± 0.020) parameters for the deficit region are (α_V, δ_V) = (205^∘± 7^∘, 5^∘± 10^∘), χ_V = (54 ± 7)^∘, and (-0.094 ± 0.014) anisotropy (allowed at 13 excess and deficit cones described above. We explored the implications under the assumption that the true anisotropy is not distorted too much by the analysis filter so that it is well-described by the observed excess and deficit cones.
doi:10.1103/physrevd.75.062003 fatcat:3ndnoralwbettgbeojvxxwyrkm
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Citation

G. Guillian, J. Hosaka, K. Ishihara, J. Kameda, Y. Koshio, A. Minamino, C. Mitsuda, M. Miura, S. Moriyama, M. Nakahata, T. Namba, Y. Obayashi, H. Ogawa, M. Shiozawa, Y. Suzuki, A. Takeda, Y. Takeuchi, S. Yamada, I. Higuchi, M. Ishitsuka, T. Kajita, K. Kaneyuki, G. Mitsuka, S. Nakayama, H. Nishino, A. Okada, K. Okumura, C. Saji, Y. Takenaga, S. Desai, E. Kearns, J. L. Stone, L. R. Sulak, W. Wang, M. Goldhaber, D. Casper, W. Gajewski, J. Griskevich, W. R. Kropp, D. W. Liu, S. Mine, M. B. Smy, H. W. Sobel, M. R. Vagins, K. S. Ganezer, J. Hill, W. E. Keig, K. Scholberg, C. W. Walter, R. W. Ellsworth, S. Tasaka, A. Kibayashi, J. G. Learned, S. Matsuno, M. D. Messier, Y. Hayato, A. K. Ichikawa, T. Ishida, T. Ishii, T. Iwashita, T. Kobayashi, T. Nakadaira, K. Nakamura, K. Nitta, Y. Oyama, Y. Totsuka, A. T. Suzuki, M. Hasegawa, I. Kato, H. Maesaka, T. Nakaya, K. Nishikawa, H. Sato, S. Yamamoto, M. Yokoyama, T. J. Haines, S. Dazeley, S. Hatakeyama, R. Svoboda, E. Blaufuss, J. A. Goodman, G. W. Sullivan, D. Turcan, A. Habig, Y. Fukuda, Y. Itow, M. Sakuda, M. Yoshida, S. B. Kim, J. Yoo, H. Okazawa, T. Ishizuka, C. K. Jung, T. Kato, K. Kobayashi, M. Malek, C. Mauger, C. McGrew, E. Sharkey, C. Yanagisawa, Y. Gando, T. Hasegawa, K. Inoue, J. Shirai, A. Suzuki, K. Nishijima, H. Ishino, Y. Watanabe, M. Koshiba, D. Kielczewska, H. G. Berns, R. Gran, K. K. Shiraishi, A. L. Stachyra, K. Washburn, R. J. Wilkes, K. Munakata. "Observation of the anisotropy of 10 TeV primary cosmic ray nuclei flux with the Super-Kamiokande-I detector." Physical Review D 75.6 (2007)