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arXiv · 0908.1610

CANGAROO-III Observation of TeV Gamma Rays from the vicinity of PSR B1 706-44

R. Enomoto·J. Kushida·T. Nakamori·T. Kifune·G. V. Bicknell·R. W. Clay·P. G. Edwards·S. Gunji·S. Hara·T. Hara·T. Hattori·S. Hayashi·Y. Higashi·Y. Hirai·K. Inoue·H. Ishioka·S. Kabuki·F. Kajino·H. Katagiri·A. Kawachi·R. Kiuchi·H. Kubo·T. Kunisawa·T. Matoba·Y. Matsubara·I. Matsuzawa·T. Mizukami·Y. Mizumura·Y. Mizumoto·M. Mori·H. Muraishi·T. Naito·S. Nakano·K. Nishijima·M. Ohishi·Y. Otake·S. Ryoki·K. Saito·Y. Sakamoto·A. Seki·V. Stamatescu·T. Suzuki·D. L. Swaby·T. Tanimori·G. Thornton·F. Tokanai·K. Tsuchiya·S. Watanabe·E. Yamazaki·S. Yanagita·T. Yoshida·T. Yoshikoshi·Y. Yukawa
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Abstract

Observation by the CANGAROO-III stereoscopic system of the Imaging Cherenkov Telescope has detected extended emission of TeV gamma rays in the vicinity of the pulsar PSR B1706$-$44. The strength of the signal observed as gamma-ray-like events varies when we apply different ways of emulating background events. The reason for such uncertainties is argued in relevance to gamma-rays embedded in the "off-source data", that is, unknown sources and diffuse emission in the Galactic plane, namely, the existence of a complex structure of TeV gamma-ray emission around PSR B1706$-$44.

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R. Enomoto, J. Kushida, T. Nakamori, T. Kifune, G. V. Bicknell, R. W. Clay, P. G. Edwards, S. Gunji, S. Hara, T. Hara, T. Hattori, S. Hayashi, Y. Higashi, Y. Hirai, K. Inoue, H. Ishioka, S. Kabuki, F. Kajino, H. Katagiri, A. Kawachi, R. Kiuchi, H. Kubo, T. Kunisawa, T. Matoba, Y. Matsubara, I. Matsuzawa, T. Mizukami, Y. Mizumura, Y. Mizumoto, M. Mori, H. Muraishi, T. Naito, S. Nakano, K. Nishijima, M. Ohishi, Y. Otake, S. Ryoki, K. Saito, Y. Sakamoto, A. Seki, V. Stamatescu, T. Suzuki, D. L. Swaby, T. Tanimori, G. Thornton, F. Tokanai, K. Tsuchiya, S. Watanabe, E. Yamazaki, S. Yanagita, T. Yoshida, T. Yoshikoshi, Y. Yukawa. 2009-08-12. CANGAROO-III Observation of TeV Gamma Rays from the vicinity of PSR B1 706-44. https://doi.org/10.1088/0004-637x/703/2/1725

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