Type-I bursts within outbursts of IGR J17473-2721
文献类型：期刊论文
| 作者 | Chen YP(陈玉鹏) ; Zhang S(张澍); Wang JM(王建民); Li TB(李惕碚); Chen, YP; Zhang, S; Torres, DF; Wang, JM; Li, TP
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| 刊名 | ASTRONOMY & ASTROPHYSICS
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| 出版日期 | 2010 |
| 卷号 | 510页码:A81 |
| 关键词 | star: neutron individual: IGR J17473-2721 X-rays: bursts |
| 通讯作者 | [Chen, Y. -P. ; Zhang, S. ; Wang, J. -M. ; Li, T. -P.] Inst High Energy Phys, Lab Particle Astrophys, Beijing 100049, Peoples R China ; [Torres, D. F.] Campus UAB, ICREA, Fac Ciencies, Barcelona 08193, Spain ; [Torres, D. F.] Campus UAB, Inst Ciencies Espai, IEEC, CSIC,Fac Ciencies, Barcelona 08193, Spain ; [Li, T. -P.] Tsinghua Univ, Ctr Astrophys, Beijing 100084, Peoples R China |
| 英文摘要 | Aims. Two outbursts were observed by RXTE in the history of the atoll source IGR J17473-2721. During the most recent outburst in 2008, the source showed a complete series of spectral states/transitions. The neutron star system was prolific in type-I X-ray bursts, and we investigate them in the context of complete outbursts evolution. Methods. A total exposure of similar to 309 ks was collected by RXTE during the two outbursts of IGR J17473-2721. We carried out a systematic search for type-I bursts in this data set. For each burst found, we investigated the burst profile, the peak flux, and their dependence on the accretion rate along the evolution of the outbursts. Results. Eighteen type-I X-ray bursts were found from IGR J17473-2721: two from the outburst in 2005 and the other 16 from the recent outburst in 2008. Among them, 3 bursts show photospheric radius expansion ( PRE). The distance to the source is estimated as 6.4 kpc with a 15% uncertainty based on the three bursts that show PRE. In the recent outburst, there are 6 bursts showing up in the low/hard state prior to the state transition to a high/soft state, 3 bursts at the end phase of the high/soft state, and 7 in the following low/hard state. The blackbody radius of these bursts presents a variety of interesting features. We find that, at the end of the recent outburst, the profile of the blackbody radius is anti-correlated with the blackbody temperature and the burst flux. The durations of the type-I burst are found to correlate with the Eddington ratio and to have two parallel evolution groups. Along the decreasing Eddington ratio, the burst duration decreases and ends in each group the PRE bursts occurred. This provides new clues to the type-I bursts in the context of outbursts for atoll XRBs. |
| 学科主题 | Astronomy & Astrophysics |
| 类目[WOS] | Astronomy & Astrophysics |
| 研究领域[WOS] | Astronomy & Astrophysics |
| 原文出处 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000276009100047 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/241075]  |
| 专题 | 高能物理研究所_院士 高能物理研究所_粒子天体物理中心 |
| 作者单位 | 中国科学院高能物理研究所 |
| 推荐引用方式 GB/T 7714 | Chen YP,Zhang S,Wang JM,et al. Type-I bursts within outbursts of IGR J17473-2721[J]. ASTRONOMY & ASTROPHYSICS,2010,510:A81. |
| APA | 陈玉鹏.,张澍.,王建民.,李惕碚.,Chen, YP.,...&Li, TP.(2010).Type-I bursts within outbursts of IGR J17473-2721.ASTRONOMY & ASTROPHYSICS,510,A81. |
| MLA | 陈玉鹏,et al."Type-I bursts within outbursts of IGR J17473-2721".ASTRONOMY & ASTROPHYSICS 510(2010):A81. |
入库方式： OAI收割
来源：高能物理研究所
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