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arXiv 0902.4689astro-ph.GA
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已知的毫秒脉冲星能帮助探测球状星团中心的中等质量黑洞吗?

Can the Known Millisecond Pulsars Help in the Detection of Intermediate-Mass Black Holes at the Centers of Globular Clusters?

T. I. Larchenkova, A. A. Lutovinov

摘要:

我们认为,检测中等质量($10^3-10^4 M_{\odot}$)黑洞的可能性,其存在于中心的球状星团预计从光学和红外观测,使用精确的脉冲到达时间的毫秒在球状星团已知的。对于其中一些最接近星团中心的类星体,我们计算了脉冲通过中心黑洞的引力场时的预期延迟时间。对于已知的黑洞来说,用现有的仪器来探测这样的时间延迟在黑洞质量为$10^3 M_{\odot}$时是不可能的,而在黑洞质量为$10^4 M_{\odot}$时则是很成问题的。此外,信号延迟对脉冲星周期及其一阶导数的影响与其测量的当前精度相比可以忽略不计。

英文摘要:

We consider the possibility of detecting intermediate-mass ($10^3-10^4 M_{\odot}$) black holes, whose existence at the centers of globular clusters is expected from optical and infrared observations, using precise pulse arrival timing for the millisecond pulsars in globular clusters known to date. For some of these pulsars closest to the cluster centers, we have calculated the expected delay times of pulses as they pass in the gravitational field of the central black hole. The detection of such a time delay by currently available instruments for the known pulsars is shown to be impossible at a black hole mass of $10^3 M_{\odot}$ and very problematic at a black hole mass of $10^4 M_{\odot}$. In addition, the signal delay will have a negligible effect on the pulsar periods and their first derivatives compared to the current accuracy of their measurements.

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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