| X-ray softening during the 2008 outburst of xte j1810-189 | |
| Weng, Shan-Shan1,2,3; Zhang, Shuang-Nan2,4; Yi, Shu-Xu2; Rong, Yu2; Gao, Xu-Dong4,5 | |
| 刊名 | Monthly notices of the royal astronomical society
 |
| 2015-07-01 | |
| 卷号 | 450期号:3页码:2915-2921 |
| 关键词 | Accretion Accretion discs Stars: distances Stars: neutron X-rays: bursts X-rays: individual (xte j1810-189) |
| ISSN号 | 0035-8711 |
| DOI | 10.1093/mnras/stv815 |
| 英文摘要 | Xte j1810-189 underwent an outburst in 2008, and was observed over similar to 100 d by rxte. performing a time-resolved spectral analysis on the photospheric radius expansion burst detected on 2008 may 4, we obtain the source distance in the range 3.5-8.7 kpc for the first time. during its outburst, xte j1810-189 did not enter into the high/soft state, and both the soft and hard colours decreased with decreasing flux. the fractional rms remained at high values (similar to 30 per cent). the rxte/pca spectra for 3-25 kev can be described by an absorbed power-law component with an additional gaussian component, and the derived photon index i" increased from 1.84 +/- a 0.01 to 2.25 +/- a 0.04 when the unabsorbed x-ray luminosity at 3-25 kev dropped from 4 x 10(36) to 6 x 10(35) erg s(-1). the relatively high flux, dense observations and broad-band spectra are strong evidence that the softening behaviour detected in the outburst of xte j1810-189 originates from the evolution of a non-thermal component rather than the thermal component (i.e. neutron star surface emission). |
| 语种 | 英语 |
| 出版者 | OXFORD UNIV PRESS |
| WOS记录号 | WOS:000356339300051 |
| 内容类型 | 期刊论文 |
| URI标识 | http://www.corc.org.cn/handle/1471x/1639533 |
| 专题 | 高能物理研究所 |
| 通讯作者 | Weng, Shan-Shan |
| 作者单位 | 1.Sabanci Univ, Fac Engn & Nat Sci, TR-34956 Istanbul, Turkey 2.Chinese Acad Sci, Inst High Energy Phys, Key Lab Particle Astrophys, Beijing 100049, Peoples R China 3.Xiangtan Univ, Dept Phys, Xiangtan 411105, Peoples R China 4.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China 5.Beijing Normal Univ, Dept Astron, Beijing 100875, Peoples R China |
| 推荐引用方式 GB/T 7714 | Weng, Shan-Shan,Zhang, Shuang-Nan,Yi, Shu-Xu,et al. X-ray softening during the 2008 outburst of xte j1810-189[J]. Monthly notices of the royal astronomical society,2015,450(3):2915-2921. |
| APA | Weng, Shan-Shan,Zhang, Shuang-Nan,Yi, Shu-Xu,Rong, Yu,&Gao, Xu-Dong.(2015).X-ray softening during the 2008 outburst of xte j1810-189.Monthly notices of the royal astronomical society,450(3),2915-2921. |
| MLA | Weng, Shan-Shan,et al."X-ray softening during the 2008 outburst of xte j1810-189".Monthly notices of the royal astronomical society 450.3(2015):2915-2921. |
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