The GW170817/GRB 170817A/AT 2017gfo Association: Some Implications for Physics and Astrophysics

doi:10.3847/2041-8213/aa9e08

	The GW170817/GRB 170817A/AT 2017gfo Association: Some Implications for Physics and Astrophysics
	Wang, Hao 1,2; Zhang, Fu-Wen 3; Wang, Yuan-Zhu 1,2; Shen, Zhao-Qiang 1,2; Liang, Yun-Feng1 ; Li, Xiang 1; Liao, Neng-Hui 1; Jin, Zhi-Ping1,4 ; Yuan, Qiang1,4 ; Zou, Yuan-Chuan 5
刊名	ASTROPHYSICAL JOURNAL LETTERS
	2017-12-10
卷号	851 期号:1 页码:7
关键词	gamma-ray burst: general gravitational waves stars: neutron
ISSN号	2041-8205
DOI	10.3847/2041-8213/aa9e08
通讯作者	Li, Xiang(xiangli@pmo.ac.cn)
英文摘要	On 2017 August 17, a gravitational-wave event (GW170817) and an associated short gamma-ray burst (GRB 170817A) from a binary neutron star merger had been detected. The follow-up optical/infrared observations also identified the macronova/kilonova emission (AT 2017gfo). In this work, we discuss some implications of the remarkable GW170817/GRB 170817A/AT 2017gfo association. We show that the similar to 1.7 s time delay between the gravitational-wave (GW) and GRB signals imposes very tight constraints on the superluminal movement of gravitational waves (i.e., the relative departure of GW velocity from the speed of light is. <= 4.3 x 10(-16)) or the possible violation of the weak equivalence principle (i.e., the difference of the gamma-ray and GW trajectories in the gravitational field of the galaxy and the local universe should be within a factor of similar to 3.4 x 10(-9)). The so-called Dark Matter Emulators and a class of contender models for cosmic acceleration ("Covariant Galileon") are ruled out as well. The successful identification of lanthanide elements in the macronova/kilonova spectrum also excludes the possibility that the progenitors of GRB 170817A are a binary strange star system. The high neutron star merger rate (inferred from both the local sGRB data and the gravitational-wave data) together with the significant ejected mass strongly suggest that such mergers are the prime sites of heavy r-process nucleosynthesis.
WOS关键词	GAMMA-RAY BURSTS ; R-PROCESS NUCLEOSYNTHESIS ; GRAVITATIONAL-WAVE EVENT ; NEUTRON-STAR MERGERS ; MODIFIED GRAVITY ; IDENTIFICATION ; MACRONOVA ; EMISSION ; ELEMENTS ; CATALOG
WOS研究方向	Astronomy & Astrophysics
语种	英语
出版者	IOP PUBLISHING LTD
WOS记录号	WOS:000417542100018
内容类型	期刊论文
源URL	[http://libir.pmo.ac.cn/handle/332002/22109]
专题	中国科学院紫金山天文台
通讯作者	Li, Xiang
作者单位	1.Chinese Acad Sci, Key Lab Dark Matter & Space Astron, Purple Mt Observ, Nanjing 210008, Jiangsu, Peoples R China 2.Univ Chinese Acad Sci, Yuquan Rd 19, Beijing 100049, Peoples R China 3.Guilin Univ Technol, Coll Sci, Guilin 541004, Peoples R China 4.Univ Sci & Technol China, Sch Astron & Space Sci, Hefei 230026, Anhui, Peoples R China 5.Huazhong Univ Sci & Technol, Sch Phys, Wuhan 430074, Hubei, Peoples R China
推荐引用方式 GB/T 7714	Wang, Hao,Zhang, Fu-Wen,Wang, Yuan-Zhu,et al. The GW170817/GRB 170817A/AT 2017gfo Association: Some Implications for Physics and Astrophysics[J]. ASTROPHYSICAL JOURNAL LETTERS,2017,851(1):7.
APA	Wang, Hao.,Zhang, Fu-Wen.,Wang, Yuan-Zhu.,Shen, Zhao-Qiang.,Liang, Yun-Feng.,...&Wei, Da-Ming.(2017).The GW170817/GRB 170817A/AT 2017gfo Association: Some Implications for Physics and Astrophysics.ASTROPHYSICAL JOURNAL LETTERS,851(1),7.
MLA	Wang, Hao,et al."The GW170817/GRB 170817A/AT 2017gfo Association: Some Implications for Physics and Astrophysics".ASTROPHYSICAL JOURNAL LETTERS 851.1(2017):7.