论文标题
与太空传播探测器有关的星系和相邻星系中的非常极端的质量比率
Very extreme mass-ratio bursts in the Galaxy and neighbouring galaxies in relation to space-borne detectors
论文作者
论文摘要
最近的两篇论文\ citep {xmri1，xmri2}表明，在我们的银河系中，布朗矮人组成的非常极端的质量比率和银河中心的超级质量黑洞。这些论文中估计的事件速率对于将来的太空传播探测器非常相当大。此外，在Inspiraling Orbits的形成过程中，还有一些暴跌事件。在这项工作中，我们从紧凑型物体（棕色矮人，原始黑洞等）中计算出重力波，从中央超级质量黑洞插入或散射。我们发现，对于太空传播，这些爆发的信噪比很高。事件费率估计为$ \ sim $ 0.01 {\ rm {yr}^{ - 1}}} $。如果幸运的话，这种非常极端的质量比率爆发将为揭示最近的超级质量黑洞和核动力学提供独特的机会。事件速率可以大至4 $ \ sim $ 8 $ {\ rm yr^{ - 1}} $ 10 MPC，并且由于信号足以通过太空传播探测器进行观察，所以我们有很大的机会探测相邻黑洞的性质。
Two recent papers\citep{xmri1, xmri2} revealed that in our Galaxy there are very extreme-mass-ratio inspirals composed by brown dwarfs and the supermassive black hole at the center of the Galaxy. The event rates estimated in these papers are very considerable for future space-borne detectors. In addition, there are plunge events during the formation of inspiraling orbits. In this work, we calculate the gravitational waves from compact objects (brown dwarf, primordial black hole and etc.) plunging into or being scattered by the central supermassive black hole. We find that for space-borne detectors the signal-to-noise ratios of these bursts are quite high. The event rates are estimated as $\sim$ $0.01 {\rm{yr}^{-1}}$ for the Galaxy. If we are lucky, this kind of very extreme-mass-ratio bursts will offer a unique chance to reveal the nearest supermassive black hole and nuclei dynamics. The event rate can be as large as 4 $\sim$ 8 ${\rm yr^{-1}}$ in 10 Mpc, and because the signal is strong enough for observations by space-borne detectors, we have a good chance of being able to probe the nature of neighboring black holes.
