Extreme mass-ratio inspirals as probes of scalar fields: Eccentric equatorial orbits around Kerr black holes
Extreme mass-ratio inspirals as probes of scalar fields: Eccentric equatorial orbits around Kerr black holes
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DOI：
10.1103/physrevd.106.044029
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发表时间：
2022-03
影响因子：
5
通讯作者：
Susanna Barsanti;N. Franchini;L. Gualtieri;A. Maselli;T. Sotiriou
中科院分区：
文献类型：
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作者：
Susanna Barsanti;N. Franchini;L. Gualtieri;A. Maselli;T. Sotiriou
我们研究的二元系统中，一个恒星质量紧凑的对象螺旋到一个巨大的黑洞，被称为极端的质量比inspirals，在一个新的基本标量场的情况下。早期的工作已经表明，在最有趣的情况下，在质量比的领先顺序，大质量黑洞可以充分近似的克尔度规和印记的标量场的波形是完全控制的标量电荷的恒星质量的对象。在这里，我们使用这种急剧简化的inspiral模型，并考虑偏心赤道轨道。我们研究了标量荷如何影响不同偏心率和不同黑洞自旋值的轨道演化。然后，我们确定如何在轨道演变的变化得到印记的波形和评估丽莎的能力，以检测或约束标量电荷。
We study binary systems in which a stellar mass compact object spirals into a massive black hole, known as extreme mass ratio inspirals, in scenarios with a new fundamental scalar field. Earlier work has shown that, in most interesting such scenarios and to leading order in the mass ratio, the massive black holes can be adequately approximated by the Kerr metric and the imprint of the scalar field on the waveform is fully controlled by the scalar charge of the stellar mass object. Here we use this drastic simplification in the inspiral modelling and consider eccentric equatorial orbits. We study how the scalar charge affects the orbital evolution for different eccentricities and different values of the black hole spin. We then determine how changes in the orbital evolution get imprinted on the waveform and assess LISA's capability to detect or constrain the scalar charge.