arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2108.02782gr-qcastro-ph.HEnlin.CD
收藏

引力波假信号:不可积极值质量比螺旋中的共振岛和频率跳跃

Gravitational-wave glitches: resonant islands and frequency jumps in non-integrable extreme-mass-ratio inspirals

Kyriakos Destounis, Kostas D. Kokkotas

摘要:

即将到来的空间探测器探测到的极端质量比的引力波引力波将允许在强场区域对广义相对论进行前所未有的测试。除了评估黑洞是否被克尔度规明确描述之外,这种探测可能会对时空对称性的程度产生限制。特别是,根据一个假设偏离克尔度规的具体表现,卡特对称性,这意味着测地线方程的可积性,可能被打破。在这里,我们研究的引力波形与不可积的极端质量比inspirals涉及一个小质量的同伴和一个超大质量的紧凑的对象的广义相对论,即曼科-诺维科夫时空。我们表明,波形显示突然的频率跳跃,当同伴横穿共振岛。这些发现表明,这种突然的表现在引力波频率是通用的,有一个真正的天体物理学的起源和功能作为一个独特的签名的混乱现象在极端质量比双星。

英文摘要:

The detection of gravitational waves from extreme-mass-ratio inspirals with upcoming space-borne detectors will allow for unprecedented tests of general relativity in the strong-field regime. Aside from assessing whether black holes are unequivocally described by the Kerr metric, such detections may place constraints on the degree of spacetime symmetry. In particular, depending on exactly how a hypothetical departure from the Kerr metric manifests, the Carter symmetry, which implies the integrability of the geodesic equations, may be broken. Here, we examine the gravitational waveforms associated with non-integrable extreme-mass-ratio inspirals involving a small-mass companion and a supermassive compact object of general relativity, namely the Manko-Novikov spacetime. We show that the waveforms displays sudden frequency jumps, when the companion transverses resonant islands. These findings demonstrate that such abrupt manifestations in the gravitational-wave frequencies are generic, have a genuine astrophysical origin and function as a distinctive signature of chaotic phenomena in extreme-mass-ratio binaries.

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。

↑