2006年9月
Cyclotron resonance energies at a low X-ray luminosity: A0535+262 observed with Suzaku
ASTROPHYSICAL JOURNAL
- 巻
- 648
- 号
- 2
- 開始ページ
- L139
- 終了ページ
- L142
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- 出版者・発行元
- UNIV CHICAGO PRESS
The binary X-ray pulsar A0535 + 262 was observed with the Suzaku X-ray observatory on 2005 September 14 for a net exposure of 22 ks. The source was in the declining phase of a minor outburst, exhibiting 3-50 keV luminosity of similar to 3.7 x 10(35) ergs s(-1) at an assumed distance of 2 kpc. In spite of the very low source intensity ( about 30 mcrab at 20 keV), its electron cyclotron resonance was detected clearly with the Suzaku Hard X-Ray Detector, in absorption at about 45 keV. The resonance energy is found to be essentially the same as that measured when the source is almost 2 orders of magnitude more luminous. These results are compared with the luminosity-dependent changes in the cyclotron resonance energy, observed from 4U 0115 + 63 and X0331 + 53.
- リンク情報
- ID情報
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- ISSN : 0004-637X
- Web of Science ID : WOS:000240403800014