LISA parameter estimation and source localization with higher harmonics of the ringdown

被引：44

作者：

Baibhav, Vishal ^{[1
]}

Berti, Emanuele ^{[1
]}

Cardoso, Vitor ^{[2
]}

机构：

[1] Johns Hopkins Univ, Dept Phys & Astron, 3400 N Charles St, Baltimore, MD 21218 USA

[2] Univ Lisbon, IST, Dept Fis, CENTRA, Ave Rovisco Pais 1, P-1049 Lisbon, Portugal

来源：

PHYSICAL REVIEW D | 2020年 / 101卷 / 08期

关键词：

BLACK-HOLE BINARIES; GRAVITATIONAL-WAVES; COALESCENCE;

D O I：

10.1103/PhysRevD.101.084053

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

LISA can detect higher harmonics of the ringdown gravitational-wave signal from massive black-hole binary mergers with large signal-to-noise ratio. The most massive black-hole binaries are more likely to have electromagnetic counterparts, and the inspiral will contribute little to their signal-to-noise ratio. Here we address the following question: can we extract the binary parameters and localize the source using LISA observations of the ringdown only? Modulations of the amplitude and phase due to LISA's motion around the Sun can be used to disentangle the source location and orientation when we detect the long-lived inspiral signal, but they cannot be used for ringdown-dominated signals, which are very short lived. We show that (i) we can still measure the mass ratio and inclination of high-mass binaries by carefully combining multiple ringdown harmonics, and (ii) we can constrain the sky location and luminosity distance by relying on the relative amplitudes and phases of various harmonics, as measured in different LISA channels.

引用

页数：20

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