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https://hdl.handle.net/2440/32200
Type: | Journal article |
Title: | Evidence for TeV gamma-ray emission from the shell type SNR RXJ1713.7-3946 |
Author: | Muraishi, H. Tanimori, T. Yanagita, S. Yoshida, Y. Moriya, M. Kifune, T. Dazeley, S. Edwards, P. Gunji, S. Hara, S. Hara, T. Kawachi, A. Kubo, H. Matsubara, Y. Mizumoto, Y. Mori, M. Muraki, Y. Naito, T. Nishijima, K. Patterson, J. et al. |
Citation: | Astronomy and Astrophysics: a European journal, 2000; 354(1):57-61 |
Publisher: | E D P Sciences |
Issue Date: | 2000 |
ISSN: | 0004-6361 |
Statement of Responsibility: | H. Muraishi, T. Tanimori, S. Yanagita, T. Yoshida, M. Moriya, T. Kifune, S. A. Dazeley, P. G. Edwards, S. Gunji, S. Hara, T. Hara, A. Kawachi, H. Kubo, Y. Matsubara, Y. Mizumoto, M. Mori, Y. Muraki, T. Naito, K. Nishijima, J. R. Patterson, G. P. Rowell, T. Sako, K. Sakurazawa, R. Susukita, T. Tamura and T. Yoshikoshi |
Abstract: | We report the results of TeV gamma-ray observations of the shell type SNR RXJ1713.7-3946 (G347.3-0.5). The discovery of strong non-thermal X-ray emission from the northwest part of the remnant strongly suggests the existence of electrons with energies up to 100 TeV in the remnant, making the SNR a good candidate TeV gamma-ray source. We observed RXJ1713.7-3946 from May to August 1998 with the CANGAROO 3.8m atmospheric imaging Cerenkov telescope and obtained evidence for TeV gamma-ray emission from the NW rim of the remnant with the significance of 5.6 sigma. The observed TeV gamma-ray flux from the NW rim region was estimated to be (5.3 +/- 0.9[statistical] +/- 1.6[systematic]) * 10^{-12} photons cm^{-2} s^{-1} at energies >= 1.8 +/- 0.9 TeV. The data indicate that the emitting region is much broader than the point spread function of our telescope. The extent of the emission is consistent with that of hard X-rays observed by ASCA. This TeV gamma-ray emission can be attributed to the Inverse Compton scattering of the Cosmic Microwave Background Radiation by shock accelerated ultra-relativistic electrons. Under this assumption, a rather low magnetic field of 11 micro gauss is deduced for the remnant from our observation. |
Rights: | Copyright © 2000. © European Southern Observatory (ESO) 2000. Submitted to Cornell University’s online archive www.arXiv.org in 2000 by Hiroshi Muraishi. Post-print can be sourced from www.arxiv.org. |
Published version: | http://aa.springer.de/bibs/0354001/2300l57/small.htm |
Appears in Collections: | Aurora harvest Chemistry and Physics publications |
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hdl_32200.pdf | Published version | 161.36 kB | Adobe PDF | View/Open |
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