A disc corona-jet model for the radio/X-ray correlation in black hole X-ray binaries
文献类型：期刊论文
| 作者 | Qiao, Erlin ; Liu, B. F.
|
| 刊名 | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
 |
| 出版日期 | 2015-04-01 |
| 卷号 | 448期号:2页码:1099-1106 |
| 关键词 | accretion, accretion discs black hole physics radio continuum: stars X-rays: binaries X-rays: individual: H1743-322 |
| 英文摘要 | The observed tight radio/X-ray correlation in the low spectral state of some black hole X-ray binaries implies the strong coupling of the accretion and jet. The correlation of L-R proportional to L-X(similar to 0.5-0.7) was well explained by the coupling of a radiatively inefficient accretion flowand a jet. Recently, however, a growing number of sources show more complicated radio/X-ray correlations, e.g. L-R proportional to L-X(similar to 1.4) for L-X/L-Edd greater than or similar to 10(-3), which is suggested to be explained by the coupling of a radiatively efficient accretion flow and a jet. In this work, we interpret the deviation from the initial radio/X-ray correlation for L-X/L-Edd greater than or similar to 10(-3) with a detailed disc corona-jet model. In this model, the disc and corona are radiatively and dynamically coupled. Assuming a fraction of the matter in the accretion flow, eta = (M) over dot(jet)/(M) over dot, is ejected to form the jet, we can calculate the emergent spectrum of the disc corona-jet system. We calculate L-R and L-X at different (M) over dot, adjusting. to fit the observed radio/X-ray correlation of the black hole X-ray transient H1743-322 for L-X/L-Edd > 10(-3). It is found that always the X-ray emission is dominated by the disc corona and the radio emission is dominated by the jet. We noted that the value of. for the deviated radio/X-ray correlation for L-X/L-Edd > 10(-3) is systematically less than that of the case for L-X/L-Edd < 10(-3), which is consistent with the general idea that the jet is often relatively suppressed at the high-luminosity phase in black hole X-ray binaries. |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000350274500005 |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/5712]  |
| 专题 | 国家天文台_空间科学研究部 |
| 作者单位 | Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China |
| 推荐引用方式 GB/T 7714 | Qiao, Erlin,Liu, B. F.. A disc corona-jet model for the radio/X-ray correlation in black hole X-ray binaries[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2015,448(2):1099-1106. |
| APA | Qiao, Erlin,&Liu, B. F..(2015).A disc corona-jet model for the radio/X-ray correlation in black hole X-ray binaries.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,448(2),1099-1106. |
| MLA | Qiao, Erlin,et al."A disc corona-jet model for the radio/X-ray correlation in black hole X-ray binaries".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 448.2(2015):1099-1106. |
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来源：国家天文台
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