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arXiv 1206.4722astro-ph.GAastro-ph.HE
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Sgr A* 中被黑洞偏转的脉冲星光束的探测:黑洞自旋的影响

Detection of pulsar beams deflected by the black hole in Sgr A*: effects of black hole spin

Sourabh Nampalliwar, Richard H. Price, Teviet Creighton, Fredrick A. Jenet

摘要:

一些银河系模型预测在我们的银河系中心附近有大量的射电望远镜。来自这些恒星的光束可能会被认为位于银河系中心的超大质量黑洞(SMBH)强烈偏转并到达地球。早期的工作假设史瓦西SMBH提供了边际机会,观察这种奇异的现象与目前的望远镜和良好的机会与未来的望远镜。这里我们计算旋转SMBH的可观测性几率。我们发现,观测的估计不受SMBH自旋的影响,但偏转脉冲的脉冲星定时分析可能能够提供一个估计的中心黑洞的自旋。

英文摘要:

Some Galactic models predict a significant population of radio pulsars close to the our galactic center. Beams from these pulsars could get strongly deflected by the supermassive black hole (SMBH) believed to reside at the galactic center and reach the Earth. Earlier work assuming a Schwarzschild SMBH gave marginal chances of observing this exotic phenomenon with current telescopes and good chances with future telescopes. Here we calculate the odds of observability for a rotating SMBH. We find that the estimates of observation are not affected by the SMBH spin, but a pulsar timing analysis of deflected pulses might be able to provide an estimate of the spin of the central 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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