Observation of an extended very high energy gamma-ray emission from MSH 15-52 with CANGAROO-III

Nakamori, T.; Kubo, H.; Yoshida, T.; Tanimori, T.; Enomoto, R.; Bicknell, G.; Clay, R.; Edwards, P.; Gunji, S.; Hara, S.; Hara, T.; Hattori, T.; Hayashi, S.; Higashi, Y.; Hirai, Y.; Inoue, K.; Kabuki, S.; Kajino, F.; Katagiri, H.; Kawachi, A.; et al.

Please use this identifier to cite or link to this item: https://hdl.handle.net/2440/50833

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Type:	Journal article
Title:	Observation of an extended very high energy gamma-ray emission from MSH 15-52 with CANGAROO-III
Author:	Nakamori, T. Kubo, H. Yoshida, T. Tanimori, T. Enomoto, R. Bicknell, G. Clay, R. Edwards, P. Gunji, S. Hara, S. Hara, T. Hattori, T. Hayashi, S. Higashi, Y. 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; 677(1):297-305
Publisher:	Univ Chicago Press
Issue Date:	2008
ISSN:	0004-637X 1538-4357
Statement of Responsibility:	T. Nakamori, H. Kubo, T. Yoshida, T. Tanimori, R. Enomoto, 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, 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. Naito, 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, T. Yoshikoshi, and Y. Yukawa
Abstract:	We have observed the supernova remnant MSH 15-52 (G320.4-1.2), which contains the gamma-ray pulsar PSR B1509-58, using the CANGAROO-III imaging atmospheric Cerenkov telescope array from 2006 April to June. We detected gamma rays above 810 GeV at the 7 σ level during a total effective exposure of 48.4 hr. We obtained a differential gamma-ray flux at 2.35 TeV of (7.9 ± 1.5stat ± 1.7sys) × 10-13 cm -2 s-1 TeV-1, with a photon index of 2.21 ± 0.39stat ± 0.40sys, which is compatible with that of the H.E.S.S. observation in 2004. The morphology shows extended emission compared to our point spread function. We consider the plausible origin of the high-energy emission based on a multiwavelength spectral analysis and energetics arguments.
Keywords:	gamma rays: observations ISM: individual (MSH 15-52, G320.4-1.2) pulsars: individual (PSR B1509–58) supernova remnants
Provenance:	Tha Astrophysical Journal (0004-637X) was published by the University of Chicago Press previous to 2009.
DOI:	10.1086/529029
Published version:	http://dx.doi.org/10.1086/529029
Appears in Collections:	Aurora harvest 5 Chemistry and Physics publications

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