Oxygen line mapping of SN 1006 with Suzaku
Petre, Rob; Katsuda, Satoru; Tsujimoto, Masahiro; Kokubun, Motohide; Takahashi, Tadayuki; Terada, Yukikatsu; Ueno, Masaru; Yamaguchi, Hiroya; Koyama, Katsuji; Hughes, John P.; Nakajima, Hiroshi; Matsumoto, Hironori; Bamba, Aya; Mori, Koji; Uchiyama, Yasunobu; Tanaka, Takaaki; Hiraga, Junko S.; Kataoka, Jun; Kitamoto, Shunji; Ozaki, Masanobu; Tomida, Hiroshi; Tsuboi, Yohko; Tsunemi, Hiroshi; Watanabe, Shin; Miyata, Emi; Holt, Steve; Katagiri, Hideaki; Sekiguchi, Akiko
Japan, United States
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.