Electromagnetic Precursors to Black Hole-Neutron Star Gravitational Wave Events: Flares and Reconnection-powered Fast Radio Transients from the Late Inspiral

被引：14

作者：

Most, Elias R. ^{[1
]}

Philippov, Alexander A. ^{[2
]}

机构：

[1] CALTECH, TAPIR, MC 350-17, Pasadena, CA 91125 USA

[2] Univ Maryland, Dept Phys, College Pk, MD 20742 USA

来源：

ASTROPHYSICAL JOURNAL LETTERS | 2023年 / 956卷 / 02期

基金：

美国国家科学基金会;

关键词：

INFRARED LIGHT CURVES; MERGER GW170817; MAGNETIC-INTERACTIONS; MASS-DISTRIBUTION; FLUX TUBES; FOLLOW-UP; EMISSION; COUNTERPART; KILONOVA; SIMULATIONS;

D O I：

10.3847/2041-8213/acfdae

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The presence of magnetic fields in the late inspiral of black hole-neutron star binaries could lead to potentially detectable electromagnetic precursor transients. Using general-relativistic force-free electrodynamics simulations, we investigate premerger interactions of the common magnetosphere of black hole-neutron star systems. We demonstrate that these systems can feature copious electromagnetic flaring activity, which we find depends on the magnetic field orientation but not on black hole spin. Due to interactions with the surrounding magnetosphere, these flares could lead to fast-radio-burst-like transients and X-ray emission, with L-EM less than or similar to 10(41)(B-*/10(12) G)(2) erg s(-1) as an upper bound on the luminosity, where B-* is the magnetic field strength on the surface of the neutron star.

引用

页数：10

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