The mini-GWAC optical follow-up of gravitational wave alerts – results from the O2 campaign and prospects for the upcoming O3 run
The mini-GWAC optical follow-up of gravitational wave alerts – results from the O2 campaign and prospects for the upcoming O3 run作者机构：Key Laboratory of Space Astronomy and TechnologyNational Astronomical ObservatoriesChinese Academy of SciencesBeijing 100101China LALUniv.Paris-SudCNRS/IN2P3Universite Paris-SaclayF-91898 OrsayFrance APCUniv Paris DiderotCNRS/IN2P3CEA/lrfuObs de ParisSorbonne Paris CiteFrance CEA SaclayDRF/IRFU/Departement d’astrophysique91191 Gif-sur-YvetteFrance School of Astronomy and Space ScienceUniversity of Chinese Academy of SciencesBeijing 101408China Universite de ToulouseIRAP 14 Av.Edouard BelinF-31000 ToulouseFrance Institut de Recherche en Astrophysique et Planetologie(IRAP)UPS-OMPToulouseFrance Guangxi Key Laboratory for Relativistic AstrophysicsSchool of Physical Science and TechnologyGuangxi UniversityNanning 530004China Institute of High Energy PhysicsChinese Academy of SciencesBeijing 100049China School of Physics and Electronic InformationHuaibei Normal UniversityHuaibei 235000China
出 版 物：《Research in Astronomy and Astrophysics》 (天文和天体物理学研究（英文版）)
年 卷 期：2020年第20卷第1期
页 面：107-123页
核心收录：
学科分类：0709[理学-地质学] 07[理学] 0708[理学-地球物理学] 070401[理学-天体物理] 0704[理学-天文学] 0825[工学-航空宇航科学与技术]
基 金：supported by the National Natural Science Foundation of China(Grant Nos.11533003,11673006,U1331202,U1931133 and U1938201) the Guangxi Science Foundation(2016GXNSFFA380006,AD17129006and 2018GXNSFGA281007) the Strategic Priority Research Program of the Chinese Academy of Sciences(XDB23040000) the Strategic Pioneer Program on Space Science,Chinese Academy of Sciences(XDA15052600) financial support from the Chinese Academy of Sciences PIFI post-doctoral fellowship program(program C) financial support of the Univ Earth S Labex program at Sorbonne Paris Cité(ANR-10-LABX-0023 and ANR-11-IDEX-0005-02)
主 题：gravitational waves methods:data analysis methods:observational (stars:)gammaray burst:general
摘 要：The second(O2)observational campaign of gravitational waves(GWs)organized by the LIGO/Virgo Collaborations has led to several breakthroughs such as the detection of GW signals from merger systems involving black holes or neutrons *** O2,14 GW alerts were sent to the astronomical community with sky regions mostly covering over hundreds of square *** them,six were finally confirmed as real astrophysical *** 2013,a new set of ground-based robotic telescopes called Ground-based Wide Angle Camera system(GWAC)project and its pathfinder mini-GWAC has been developed to contribute to the various challenges of multi-messenger and time domain *** GWAC system is built up in the framework of the ground-segment system of the SVOM mission that will be devoted to the study of the multi-wavelength transient sky in the next *** O2,only the mini-GWAC telescope network was fully *** to the wide field of view and fast automatic follow-up capabilities of the mini-GWAC telescopes,they were adept to efficiently cover the sky localization areas of GW event *** this paper,we present the mini-GWAC pipeline we have set up to respond to GW alerts and we report our optical follow-up observations of eight GW alerts detected during the O2 *** observations provided the largest coverage of the GW localization areas with a short latency made by any optical *** found tens of optical transient candidates in our images,but none of those could be securely associated with any confirmed black hole-black hole merger *** on this first experience and the near future technical improvements of our network system,we will be more competitive in detecting the optical counterparts from some GW events that will be identified during the upcoming O3 run,especially those emerging from binary neutron star mergers.
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