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Oxygen line mapping of SN 1006 with Suzaku
Authors:Aya Bamba  Hiroya Yamaguchi  Katsuji Koyama  Junko S Hiraga  Steve Holt  John P Hughes  Hideaki Katagiri  Jun Kataoka  Satoru Katsuda  Shunji Kitamoto  Motohide Kokubun  Hironori Matsumoto  Emi Miyata  Koji Mori  Hiroshi Nakajima  Masanobu Ozaki  Rob Petre  Akiko Sekiguchi  Tadayuki Takahashi  Takaaki Tanaka  Yukikatsu Terada  Hiroshi Tomida  Yohko Tsuboi  Masahiro Tsujimoto  Hiroshi Tsunemi  Yasunobu Uchiyama  Masaru Ueno  Shin Watanabe
Institution:1. RIKEN, Cosmic Radiation Group, 2-1, Hirosawa, Wako-shi, Saitama 351-0198, Japan;2. Department of Physics, Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto 606-8502, Japan;3. Franklin W. Olin College of Engineering, 1795 Great Plain Avenue Needham, MA 02492-1245, USA;4. Department of Physics and Astronomy, Rutgers University, 136 Frelinghuysen Road, Piscataway, NJ 08854-8019, USA;5. Department of Physics, Hiroshima University, Higashi-Hiroshima 739-8526, Japan;6. Department of physics, Faculty of Science, Tokyo Institute of Technology, 2-12-1, Oo-okayama, Meguro-ku, Tokyo 152-8551, Japan;g Department of Astrophysics, Faculty of Science, Osaka University, Toyonaka 560-0043, Japan;h Department of Physics, Rikkyo University, 3-34-1, Nishi-Ikebukuro, Toshima, Tokyo 171-8501, Japan;i Department of Physics, Graduate School of Science, University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo 113-0033, Japan;j Department of Applied Physics, Faculty of Engineering, University of Miyazaki, 1-1 Gakuen Kibana-dai Nishi, Miyazaki 889-2192, Japan;k Department of High Energy Astrophysics, Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), 3-1-1 Yoshinodai, Sagamihara, Kanagawa 229-8510, Japan;l NASA Goddard Space Flight Center, Greenbelt, MD 20771, USA;m Japan Aerospace Agency, Tsukuba Space Center, 2-1-1, Sengen, Tsukuba, Ibaraki 305-8505, Japan;n Department of Physics, Faculty of Science and Engineering, Chuo University, 1-13-27 Kasuga, Bunkyo-ku, Tokyo 112-8551, Japan
Abstract:SN 1006 is one of the supernova remnants (SNRs) with relatively low-temperature electrons, considering the young age of just 1000 years. We carried out SN 1006 mapping observations with the X-ray Imaging Spectrometers (XIS) and the Hard X-ray Detector (HXD) onboard Suzaku, the fifth Japanese X-ray satellite. Thanks to the excellent spectral resolution of XIS in the soft X-ray band, H-like and He-like oxygen emission lines were clearly detected, and we could make a map of the line intensity, and as well as a flux and the photon index of nonthermal component. We found that these parameters have spatial dependences from region to region in the SNR; the north region is bright in nonthermal, while dim in thermal; the east region is bright in both nonthermal and thermal; the inner region shows dim nonthermal and bright thermal emission. The photon index is the smallest in the north region.
Keywords:Acceleration of particles  ISM: individual (SN 1006)  X-rays: ISM
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