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arXiv 0811.3519astro-ph
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日冕抛射是微类星体的普遍现象吗?

Is the ejection of the corona a general phenomenon in microquasars?

Jerome Rodriguez, Lionel Prat

摘要:

我们利用X射线望远镜RXTE和INTEGRAL研究了一些微类星体在爆发过程中的演化。我们专注于吸积盘和负责产生硬X射线的介质(所谓的日冕)之间的相互作用。通过比较两个源(XTE J1550-564和GRS 1915+105)在X射线能量和无线电波长下的行为,我们提出了一种方案,其中离散喷射与爆发期间的软X射线峰值重合。我们还认为,在这两个来源中,喷射的物质是日冕,它与X射线最大值同时消失。然后,我们转向其他两个来源,XTE J1748-248和XTE J1859+226,并研究是否可以从现有的多波长(无线电+X射线)数据得出相同的结论。

英文摘要:

We study the evolution of some microquasars during their outbursts as observed with the X-ray telescopes RXTE and INTEGRAL. We focus on the interplay between the accretion disc, and the medium responsible for the production of the hard X-rays (the so-called corona). By comparing the behaviour of two sources (XTE J1550-564 and GRS 1915+105) at X-ray energies and radio wavelengths, we propose a scenario in which the discrete ejections are triggered in coincidence with soft X-ray peaks during the outburst. We also suggest, in those two sources, that the ejected material is the corona that is seen to disappear in coincidence with the X-ray maxima. We then turn to two other sources, XTE J1748-248, and XTE J1859+226, and study whether the same conclusions can be drawn from the existing multi-wave length (radio+X-ray) data.

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。

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