Adelaide Research & Scholarship
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https://hdl.handle.net/2440/47638
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| Type: | Journal article |
| Title: | Observation of very high energy gamma rays from HESS J1804-216 with CANGAROO-III telescopes |
| Author: | Higashi, Y. Kubo, H. Yoshida, T. Enomoto, R. Tanimori, T. Edwards, P. Naito, T. Bicknell, G. Clay, R. Gunji, S. Hara, S. Hara, T. Hattori, T. Hayashi, S. Hirai, Y. Inoue, K. Kabuki, S. Kajino, F. Katagiri, H. Kawachi, A. et al. |
| Citation: | The Astrophysical Journal: an international review of astronomy and astronomical physics, 2008; 683(2):957-966 |
| Publisher: | Univ Chicago Press |
| Issue Date: | 2008 |
| ISSN: | 0004-637X 1538-4357 |
| Statement of Responsibility: | Y. Higashi, H. Kubo, T. Yoshida, R. Enomoto, T. Tanimori, P. G. Edwards, T. Naito, G. V. Bicknell, R. W. Clay, S. Gunji, S. Hara, T. Hara, T. Hattori, S. Hayashi, Y. Hirai, K. Inoue, S. Kabuki, F. Kajino, H. Katagiri, A. Kawachi, T. Kifune, R. Kiuchi, J. Kushida, Y. Matsubara, T. Mizukami, Y. Mizumoto, R. Mizuniwa, M. Mori, H. Muraishi, Y. Muraki, T. Nakamori, S. Nakano, D. Nishida, K. Nishijima, M. Ohishi, Y. Sakamoto, A. Seki, V. Stamatescu, T. Suzuki, D. L. Swaby, G. Thornton, F. Tokanai, K. Tsuchiya, S. Watanabe, Y. Yamada, E. Yamazaki, S. Yanagita, . Yoshikoshi and Y. Yukawa |
| Abstract: | We observed the unidentified TeV gamma-ray source HESS J1804-216 with the CANGAROO-III atmospheric Cerenkov telescopes from 2006 May to July. We detected very high energy gamma rays above 600 GeV at the 10 σ level in an effective exposure of 76 hr. We obtained a differential flux of (5.0 ± 1.5stat ± 1.6sys) × 10-12 (E/1 TeV)-α cm-2 s-1 TeV-1 with a photon index a of 2.69 ± 0.30stat ± 0.34sys, which is consistent with that of the H.E.S.S. observation in 2004. We also confirm the extended morphology of the source. By combining our result with multiwavelength observations, we discuss the possible counterparts of HESS J1804-216 and the radiation mechanism based on leptonic and hadronic processes for a supernova remnant and a pulsar wind nebula. © 2008. The American Astronomical Society.All rights reserved. |
| Description: | Copyright © 2008. The American Astronomical Society. All rights reserved. Printed in U.S.A. |
| DOI: | 10.1086/589877 |
| Grant ID: | ARC |
| Published version: | http://dx.doi.org/10.1086/589877 |
| Appears in Collections: | Aurora harvest 6 Chemistry and Physics publications |
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