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

IF 8.8 1区物理与天体物理 Q1 ASTRONOMY & ASTROPHYSICS Astrophysical Journal Letters Pub Date : 2023-10-01 DOI:10.3847/2041-8213/acfdae

Elias R. Most, Alexander A. Philippov

{"title":"Electromagnetic Precursors to Black Hole–Neutron Star Gravitational Wave Events: Flares and Reconnection-powered Fast Radio Transients from the Late Inspiral","authors":"Elias R. Most, Alexander A. Philippov","doi":"10.3847/2041-8213/acfdae","DOIUrl":null,"url":null,"abstract":"Abstract 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 <?CDATA ${{ \\mathcal L }}_{\\mathrm{EM}}\\lesssim {10}^{41}{\\left({B}_{* }/{10}^{12}\\,{\\rm{G}}\\right)}^{2}\\,\\mathrm{erg}\\,{{\\rm{s}}}^{-1}$?> <mml:math xmlns:mml=\"http://www.w3.org/1998/Math/MathML\" overflow=\"scroll\"> <mml:msub> <mml:mrow> <mml:mi mathvariant=\"italic\"></mml:mi> </mml:mrow> <mml:mrow> <mml:mi>EM</mml:mi> </mml:mrow> </mml:msub> <mml:mo>≲</mml:mo> <mml:msup> <mml:mrow> <mml:mn>10</mml:mn> </mml:mrow> <mml:mrow> <mml:mn>41</mml:mn> </mml:mrow> </mml:msup> <mml:msup> <mml:mrow> <mml:mfenced close=\")\" open=\"(\"> <mml:mrow> <mml:msub> <mml:mrow> <mml:mi>B</mml:mi> </mml:mrow> <mml:mrow> <mml:mo>*</mml:mo> </mml:mrow> </mml:msub> <mml:mrow> <mml:mo stretchy=\"true\">/</mml:mo> </mml:mrow> <mml:msup> <mml:mrow> <mml:mn>10</mml:mn> </mml:mrow> <mml:mrow> <mml:mn>12</mml:mn> </mml:mrow> </mml:msup> <mml:mspace width=\"0.25em\" /> <mml:mi mathvariant=\"normal\">G</mml:mi> </mml:mrow> </mml:mfenced> </mml:mrow> <mml:mrow> <mml:mn>2</mml:mn> </mml:mrow> </mml:msup> <mml:mspace width=\"0.25em\" /> <mml:mi>erg</mml:mi> <mml:mspace width=\"0.25em\" /> <mml:msup> <mml:mrow> <mml:mi mathvariant=\"normal\">s</mml:mi> </mml:mrow> <mml:mrow> <mml:mo>−</mml:mo> <mml:mn>1</mml:mn> </mml:mrow> </mml:msup> </mml:math> as an upper bound on the luminosity, where B * is the magnetic field strength on the surface of the neutron star.","PeriodicalId":55567,"journal":{"name":"Astrophysical Journal Letters","volume":"196 1","pages":"0"},"PeriodicalIF":8.8000,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Astrophysical Journal Letters","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.3847/2041-8213/acfdae","RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ASTRONOMY & ASTROPHYSICS","Score":null,"Total":0}

引用次数: 1

Abstract

Abstract 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  EM ≲ 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.

查看原文

微信好友朋友圈 QQ好友复制链接

本刊更多论文

黑洞-中子星引力波事件的电磁前体:来自晚灵感的耀斑和重连驱动的快速无线电瞬变

在黑洞-中子星双星的后期吸气中磁场的存在可能导致潜在的可探测的电磁前体瞬变。利用广义相对论的无力电动力学模拟，我们研究了黑洞-中子星系统共同磁层的合并前相互作用。我们证明了这些系统可以具有丰富的电磁耀斑活动，我们发现这取决于磁场方向，而不是黑洞自旋。由于与周围磁层的相互作用，这些耀斑可能导致类似快速射电暴的瞬态和x射线发射，亮度的上限为EM > 10 41 B * / 10 12 G 2 erg s−1，其中B *是中子星表面的磁场强度。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文去求助

来源期刊

Astrophysical Journal Letters ASTRONOMY & ASTROPHYSICS-

CiteScore

14.10

自引率

6.30%

发文量

513

审稿时长

2-3 weeks

期刊介绍： The Astrophysical Journal Letters (ApJL) is widely regarded as the foremost journal for swiftly disseminating groundbreaking astronomical research. It focuses on concise reports that highlight pivotal advancements in the field of astrophysics. By prioritizing timeliness and the generation of immediate interest among researchers, ApJL showcases articles featuring novel discoveries and critical findings that have a profound effect on the scientific community. Moreover, ApJL ensures that published articles are comprehensive in their scope, presenting context that can be readily comprehensible to scientists who may not possess expertise in the specific disciplines covered.