The possible electromagnetic counterparts of the first high-probability NSBH merger LIGO/Virgo S190814bv  

作　　者：Hao Wei Minzi Feng 

机构地区：[1]School of Physics,Beijing Institute of Technology,Beijing 100081,China [2]Key Laboratory of Particle Astrophysics,Institute of High Energy Physics,Chinese Academy of Sciences,Beijing 100049,China [3]University of Chinese Academy of Sciences,Beijing 100049,China

出　　处：《Communications in Theoretical Physics》2020年第6期89-96,共8页理论物理通讯（英文版）

基　　金：supported in part by NSFC under Grants No.11975046 and No.11575022。

摘　　要：LIGO/Virgo S190814 bv is the first high-probability neutron star–black hole(NSBH)merger candidate,whose gravitational waves(GWs)triggered LIGO/Virgo detectors at21:10:39.012957 UT,14 August 2019.It has a probability>99%of being an NSBH merger,with a low false alarm rate(FAR)of one per 1.559 e+25 years.For an NSBH merger,electromagnetic counterparts(especially short gamma-ray bursts(GRBs))are generally expected.However,no electromagnetic counterpart has been found in the extensive follow-up observing campaign.In the present work,we propose a novel explanation for this null result.In our scenario,LIGO/Virgo S190814 bv is just a GW mirror image of the real NSBH merger which should have been detected before 14 September 2015,but at that time we had no ability to detect its GW signals.The electromagnetic counterparts associated with the real NSBH merger should be found in the archive data before 14 September 2015.In this work,we indeed find nine short GRBs that are possibly electromagnetic counterparts.

关 键 词：gravitational wave electromagnetic counterpart gamma-ray burst neutron star black hole mirror image 

分 类 号：P142.84[天文地球—天体物理]