arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 2503.04044astro-ph.HE
收藏

Swift J1727.8--1613 在硬态下可能的喷流与日冕构型

A possible jet and corona configuration for Swift J1727.8--1613 during the hard state

Jing-Qiang Peng, Shu Zhang, Qing-Cang Shui, Shuang-Nan Zhang, Yu-Peng Chen

AI总结:

通过对黑洞X射线双星Swift J1727.8--1613的多卫星同步光谱分析,发现其光谱指数与反射分数的双重相关性,提出喷流与热内流构型解释其特殊爆发行为。

摘要:

Swift J1727.8--1613 是一个黑洞 X 射线双星,它与其他黑洞 X 射线双星的不同之处在于,除了反射分量外,它还具有一个额外的硬分量。我们利用 Insight-HXMT、NICER 和 NuSTAR 的同步观测进行了光谱分析,当时该源处于硬态和硬中间态。为了展示这些额外分量,我们研究了 relxill 参数之间的相关性。我们发现,当喷流主导反射时,光谱指数与反射分数之间的相关性符合 MAXI J1820+070 的情况。这为在爆发期间具有此类相关性提供了第二个样本。有趣的是,当反射分量归因于日冕时,光谱拟合得到较小的反射分数,并且光谱指数与反射分数之间的相关性符合 You et al. 2023 基于其他 X 射线双星大样本爆发所建立的整体趋势。因此,根据在光谱指数与反射分数之间观察到的双重相关性,Swift J1727.8--1613 成为连接 MAXI J1820+070 与大多数 X 射线双星的第一个样本。我们推测,喷流加上热内流的构型可能解释了 Swift J1727.8--1613 这种特殊的爆发行为。

英文摘要:

Swift J1727.8--1613 is a black hole X-ray binary that differs from other black hole X-ray binaries in that it has an extra hard component in addition to a reflection component. We perform spectral analysis with simultaneous Insight-HXMT, NICER and NuSTAR observations when the source was in the hard and hard intermediate states. For the presentation of the extra components, we investigate the correlation between the relxill parameters. We find that the correlation between the spectral index and the reflection fraction is consistent with MAXI J1820+070 when the jet dominates the reflection. This provides the second sample to have such a correlation during an outburst. Interestingly, when the reflection component is attributed to the corona, the spectral fit results in a small reflection fraction and the correlation between the spectral index and reflection fraction is in agreement with the overall trend built-in You et al. 2023 with a large sample of outbursts from other X-ray binaries. Hence Swift J1727.8--1613 turns out to be the first sample to bridge the MAXI J1820+070 to the majority of X-ray binaries according to the dual correlations observed between the spectral index and the reflection fraction. We speculate that a configuration of a jet plus a hot inner flow may account for this peculiar outburst behavior of Swift J1727.8--1613.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑