Black hole-neutron star binary mergers: the imprint of tidal deformations and debris

被引：4

作者：

Khamesra, Bhavesh ^{[1
,2
]}

Gracia-Linares, Miguel ^{[3
]}

Laguna, Pablo ^{[3
]}

机构：

[1] Georgia Inst Technol, Ctr Relativist Astrophys, Atlanta, GA 30332 USA

[2] Georgia Inst Technol, Sch Phys, Atlanta, GA 30332 USA

[3] Univ Texas Austin, Dept Phys, Ctr Gravitat Phys, Austin, TX 78712 USA

来源：

CLASSICAL AND QUANTUM GRAVITY | 2021年 / 38卷 / 18期

关键词：

general relativity; black holes; neutron stars; gravitational waves; compact binaries; numerical relativity;

D O I：

10.1088/1361-6382/ac1a66

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The increase in the sensitivity of gravitational wave (GW) interferometers will bring additional detections of binary black hole (BBH) and double neutron star (NS) mergers. It will also very likely add many merger events of BH-NS binaries. Distinguishing mixed binaries from BBHs mergers for high mass ratios could be challenging because in this situation the NS coalesces with the BH without experiencing significant disruption. To investigate the transition of mixed binary mergers into those behaving more like BBH coalescences, we present results from merger simulations for different mass ratios. We show how the degree of deformation and disruption of the NS impacts the inspiral and merger dynamics, the properties of the final BH, the accretion disk formed from the circularization of the tidal debris, the GWs, and the strain spectrum and mismatches. The results also show the effectiveness of the initial data method that generalizes the Bowen-York initial data for BH punctures to the case of binaries with NS companions.

引用

页数：26

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