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Swift Observations of the Ultraluminous X-ray Source Holmberg IX X-1

机译:迅速观察超X射线源Holmberg IX X-1

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Holmberg IX X-1 is a well-known ultraluminous X-ray source with an X-ray luminosity of ~ 10~(40) erg s ~(-1). The source has been monitored by the X-ray Telescope of Swift regularly. Since 2009 April, the source has been in an extended low luminosity state. We utilize the co-added spectra taken at different luminosity states to study the spectral behavior of the source. The best overall fits are provided by a dual thermal model with a cool blackbody and a warm disk blackbody. This suggests that Holmberg IX X-l may be a stellar-mass black hole accreting at or above the Eddington limit and we are observing both the inner regions of the accretion disk and outflows from the compact object.
机译:HOLMBERG IX X-1是具有X射线光学的众所周知的超荧光X射线源,X射线光度为〜10〜(40)erg S〜(-1)。 Swift定期被X射线望远镜监测源。自2009年4月以来,源处于扩展的低光度状态。我们利用在不同亮度状态下的共加入光谱来研究源的光谱行为。最好的整体配合由双热模型提供,带有凉爽的黑体和暖碟黑体。这表明Holmberg IX X-L可以是Eddington限制或高于埃丁顿限制的恒星 - 质量黑洞,并且我们正在观察吸积盘的内部区域和来自紧凑型物体的流出。

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