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The origin of the first neutron star - neutron star merger

文献类型：期刊论文

作者Belczynski, K.2; Askar, A.2; Arca-Sedda, M.3; Chruslinska, M.4; Donnari, M.5; Giersz, M.2; Benacquista, M.6; Spurzem, R.1; Jin, D.6; Wiktorowicz, G.7,8
刊名ASTRONOMY & ASTROPHYSICS
出版日期2018-07-18
卷号615页码:13
关键词gravitational waves
ISSN号1432-0746
DOI10.1051/0004-6361/201732428
英文摘要The first neutron star-neutron star (NS-NS) merger was discovered on August 17, 2017 through gravitational waves (GW170817) and followed with electromagnetic observations. This merger was detected in an old elliptical galaxy with no recent star formation. We perform a suite of numerical calculations to understand the formation mechanism of this merger. We probe three leading formation mechanisms of double compact objects: classical isolated binary star evolution, dynamical evolution in globular clusters, and nuclear cluster formation to test whether they are likely to produce NS-NS mergers in old host galaxies. Our simulations with optimistic assumptions show current NS-NS merger rates at the level of 10(-2) yr(-1) from binary stars, 5 x 10(-5) yr(-1) from globular clusters, and 10(-5) yr(-1) from nuclear clusters for all local elliptical galaxies (within 100 Mpc(3)). These models are thus in tension with the detection of GW170817 with an observed rate of 1.5(-1.2)(+3.2) yr(-1) (per 100 Mpc(3); LIGO/Virgo 90% credible limits). Our results imply that either the detection of GW170817 by LIGO/Virgo at their current sensitivity in an elliptical galaxy is a statistical coincidence; that physics in at least one of our three models is incomplete in the context of the evolution of stars that can form NS-NS mergers; or that another very efficient (unknown) formation channel with a long delay time between star formation and merger is at play.
WOS关键词ACCRETION-INDUCED COLLAPSE ; BLACK-HOLE BINARIES ; INITIAL MASS FUNCTION ; EARLY-TYPE GALAXIES ; DIGITAL SKY SURVEY ; GAMMA-RAY BURSTS ; CLUSTER SIMULATIONS ; HOST GALAXIES ; WHITE-DWARFS ; MONTE-CARLO
资助项目Polish National Science Center (NCN)[DEC-2012/07/E/ST9/01360] ; Polish National Science Center (NCN)[UMO-2014/14/M/ST9/00707] ; Polish National Science Center (NCN)[UMO-2016/23/B/ST9/02732] ; Polish National Science Center (NCN)[UMO-2015/17/N/ST9/02573] ; German Research Foundation (DFG) through the Sonderforschungsbereich[SFB 881] ; President's International Fellowship Initiative (PIFI) of the Chinese Academy of Sciences[2018PM0017] ; Strategic Priority Research Program of the Chinese Academy of Science "Multi-waveband Gravitational Wave Universe"[XDB23040000]
WOS研究方向Astronomy & Astrophysics
语种英语
WOS记录号WOS:000439524900001
出版者EDP SCIENCES S A
资助机构Polish National Science Center (NCN) ; Polish National Science Center (NCN) ; German Research Foundation (DFG) through the Sonderforschungsbereich ; German Research Foundation (DFG) through the Sonderforschungsbereich ; President's International Fellowship Initiative (PIFI) of the Chinese Academy of Sciences ; President's International Fellowship Initiative (PIFI) of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Science "Multi-waveband Gravitational Wave Universe" ; Strategic Priority Research Program of the Chinese Academy of Science "Multi-waveband Gravitational Wave Universe" ; Polish National Science Center (NCN) ; Polish National Science Center (NCN) ; German Research Foundation (DFG) through the Sonderforschungsbereich ; German Research Foundation (DFG) through the Sonderforschungsbereich ; President's International Fellowship Initiative (PIFI) of the Chinese Academy of Sciences ; President's International Fellowship Initiative (PIFI) of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Science "Multi-waveband Gravitational Wave Universe" ; Strategic Priority Research Program of the Chinese Academy of Science "Multi-waveband Gravitational Wave Universe" ; Polish National Science Center (NCN) ; Polish National Science Center (NCN) ; German Research Foundation (DFG) through the Sonderforschungsbereich ; German Research Foundation (DFG) through the Sonderforschungsbereich ; President's International Fellowship Initiative (PIFI) of the Chinese Academy of Sciences ; President's International Fellowship Initiative (PIFI) of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Science "Multi-waveband Gravitational Wave Universe" ; Strategic Priority Research Program of the Chinese Academy of Science "Multi-waveband Gravitational Wave Universe" ; Polish National Science Center (NCN) ; Polish National Science Center (NCN) ; German Research Foundation (DFG) through the Sonderforschungsbereich ; German Research Foundation (DFG) through the Sonderforschungsbereich ; President's International Fellowship Initiative (PIFI) of the Chinese Academy of Sciences ; President's International Fellowship Initiative (PIFI) of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Science "Multi-waveband Gravitational Wave Universe" ; Strategic Priority Research Program of the Chinese Academy of Science "Multi-waveband Gravitational Wave Universe"
源URL[http://ir.bao.ac.cn/handle/114a11/21005]  
专题中国科学院国家天文台
通讯作者Belczynski, K.
作者单位1.Chinese Acad Sci, Natl Astron Observ China, 20A Datun Rd, Beijing 100012, Peoples R China
2.Polish Acad Sci, Nicolaus Copernicus Astron Ctr, Ul Bartycka 18, PL-00716 Warsaw, Poland
3.Astron Rech Inst, Zentrum Astron, Weberstr 13, D-69120 Heidelberg, Germany
4.Radboud Univ Nijmegen, Dept Astrophys IMAPP, POB 9010, NL-6500 GL Nijmegen, Netherlands
5.Max Planck Inst Astron, Konigstuhl 17, D-69117 Heidelberg, Germany
6.Univ Texas Rio Grande Valley, Ctr Gravitat Wave Astron, Brownsville, TX USA
7.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China
8.Univ Chinese Acad Sci, Sch Astron & Space Sci, Beijing 100012, Peoples R China
推荐引用方式
GB/T 7714		 Belczynski, K.,Askar, A.,Arca-Sedda, M.,et al. The origin of the first neutron star - neutron star merger[J]. ASTRONOMY & ASTROPHYSICS,2018,615:13.
APA Belczynski, K..,Askar, A..,Arca-Sedda, M..,Chruslinska, M..,Donnari, M..,...&Belloni, D..(2018).The origin of the first neutron star - neutron star merger.ASTRONOMY & ASTROPHYSICS,615,13.
MLA Belczynski, K.,et al."The origin of the first neutron star - neutron star merger".ASTRONOMY & ASTROPHYSICS 615(2018):13.

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