Suzaku observations of tycho's supernova remnant

Toru Tamagawa*, Asami Hayato, Satoshi Nakamura, Yukikatsu Terada, Aya Bamba, Junko S. HLraga, John P. Hughes, Una Hwang, Jun Kataoka, Kenzo Kinugasa, Hideyo Kunieda, Takaaki Tanaka, Hiroshi Tsunemi, Masaru Ueno, Stephen S. Holt, Motohide Kokubun, Emi Mlyata, Andrew Szymkowiak, Tadayuki Takahashi, Keisuke TamuraDaisuke Ueno, Kazuo Makishima

*この研究の対応する著者

研究成果: Article査読

42 被引用数 (Scopus)

抄録

Tycho's supernova remnant was observed by the XIS and HXD instruments onboard the Suzaku satellite on 2006 June 26-29 for 92 ks. The spectrum up to 30 keV was well fitted with a two-component model, consisting of a power-law with a photon index of 2.7 and a thermal bremsstrahlung model with a temperature of 4.7 keV. The former component can alternatively be modeled as synchrotron emission from a population of relativistic electrons with an estimated roll-off energy of around 1 keV. In the XIS spectra, in addition to the prominent Fe Ka line (6.445 keV), we observed for the first time significant Ka line emission from trace species Cr and Mn at energies of 5.48 keV and 5.95 keV, respectively. Faint K/5 lines from Ca (4.56keV) and Fe (7.11 keV) were also seen. The ionization states of Cr and Mn, based on their line centroids, are estimated to be similar to that of Fe Ka (Fexv orxvi).

本文言語English
ページ(範囲)S167-S174
ジャーナルPublications of the Astronomical Society of Japan
61
SUPPL. 1
DOI
出版ステータスPublished - 2009
外部発表はい

ASJC Scopus subject areas

  • 天文学と天体物理学
  • 宇宙惑星科学

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