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arXiv 0902.3488astro-ph.HE
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恒星质量黑洞自旋的测量

Measuring the Spins of Stellar-Mass Black Holes

Jeffrey E. McClintock, Ronald A. Remillard

摘要:

在天文学中,黑洞问题的重要性仅次于宇宙学问题。当前黑洞研究的前沿是自旋的测量。在过去的三年中,几个恒星质量的黑洞的旋转X射线双星已被测量通过两种技术:拟合的X射线连续谱和模拟的Fe K线的轮廓。这个初出茅庐的企业激发了以下十年目标:(1)牢固建立连续拟合和Fe K方法;获得10-20个黑洞的精确自旋值,其中一些使用两种方法;(2)使用导出的质量和自旋来测试喷流、伽玛暴、超新星、黑洞形成、黑洞双星演化等模型; (3)通过确保Fe K方法,为IXO任务服务,这是目前测量活动星系核中超大质量黑洞自旋的唯一手段;(4)确定高频QPO的正确模型,从而为测量自旋开辟第三条通道;(5)追求X射线偏振测量作为确保连续拟合和Fe K方法的手段,也作为可能的第四条自旋途径;(6)建立和验证强引力下薄盘的MHD模型。实现这些目标需要建立一个RXTE后续任务,致力于研究明亮和短暂的紧凑型物体,以及强有力的支持理论工作的三维MHD模拟吸积流的克尔度量的旋转黑洞。

英文摘要:

In astronomy, the problem of black holes is arguably second in importance only to the problem of cosmology. A current frontier in black hole research is the measurement of spin. During the past three years, the spins of several stellar-mass black holes in X-ray binaries have been measured via two techniques: fitting the X-ray continuum spectrum and modeling the profile of the Fe K line. This fledgling enterprise motivates the following decadal goals: (1) Firmly establish the continuum-fitting and Fe K methods; obtain precise values of spin for 10-20 black holes, several using both methods; (2) use the derived masses and spins to test models of jets, GRBs, supernovae, black hole formation, black hole binary evolution, etc.; (3) serve the IXO mission by securing the Fe K methodology, which is currently the only means to measure the spins of supermassive black holes in AGN; (4) identify the correct model of high-frequency QPOs, thereby opening a third channel for measuring spin; (5) pursue X-ray polarimetry as a means of securing the continuum-fitting and Fe K methods, and also as a possible fourth avenue to spin; and (6) develop and test MHD models of thin disks in strong gravity. Achieving these goals requires the establishment of an RXTE follow-on mission dedicated to the study of bright and transient compact objects, as well as strong support for theoretical work on 3D MHD simulations of accretion flows in the Kerr metric of a spinning black hole.

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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