期刊
SCIENCE BULLETIN
卷 62, 期 21, 页码 1433-1438出版社
ELSEVIER
DOI: 10.1016/j.scib.2017.10.006
关键词
Gravitational waves; Binary neutron stars; Gamma-ray bursts
资金
- National Basic Research Program (973 Program) of China [2013CB834900]
- Chinese Polar Environment Comprehensive Investigation & Assessment Program [CHINARE2016-02-03]
- National Natural Science Foundation of China [11573014, 11673068, 11325313, 11633002, 11433009, 11725314, 11633001, 11373014]
- Key Research Program of Frontier Sciences [QYZDY-SSW-SLH010, QYZDB-SSW-SYS005]
- Strategic Priority Research Program multi-waveband gravitational wave Universe [XDB23040000]
- Youth Innovation Promotion Association of Chinese Academy of Sciences [2011231]
- Tsinghua University
- Nanjing University
- Beijing Normal University
- University of New South Wales
- Texas AM University
- Australian Antarctic Division
- National Collaborative Research Infrastructure Strategy (NCRIS) of Australia
- Chinese Academy of Sciences through the Center for Astronomical Mega-Science
- National Astronomical Observatory of China (NAOC)
- Robert Martin Ayers Sciences Fund
- Australian Research Council (ARC) Centre of Excellence for Gravitational Wave Discovery (OzGrav) [CE170100004]
- ARC Centre of Excellence for All-sky Astrophysics (CAASTRO) [CE110001020]
- Centre of Excellence for All-sky Astrophysics in 3-Dimensions (ASTRO-3D) [CE170100013]
- Australian Astronomical Observatory (AAO)
- ARC [FT130101219]
- National Basic Research Program (Project 973) of China [2014CB845800]
- Strategic Priority Research Program of the Chinese Academy of Sciences [XDB23000000]
- Australian Research Council [FT130101219] Funding Source: Australian Research Council
The LIGO detection of gravitational waves (GW) from merging black holes in 2015 marked the beginning of a new era in observational astronomy. The detection of an electromagnetic signal from a GW source is the critical next step to explore in detail the physics involved. The Antarctic Survey Telescopes (AST3), located at Dome A, Antarctica, is uniquely situated for rapid response time-domain astronomy with its continuous night-time coverage during the austral winter. We report optical observations of the GW source (GW 170817) in the nearby galaxy NGC 4993 using AST3. The data show a rapidly fading transient at around 1 day after the GW trigger, with the i-band magnitude declining from 17.23 +/- 0.13 magnitude to 17.72 +/- 0.09 magnitude in similar to 1.8 h. The brightness and time evolution of the optical transient associated with GW 170817 are broadly consistent with the predictions of models involving merging binary neutron stars. We infer from our data that the merging process ejected about similar to 10(-2) solar mass of radioactive material at a speed of up to 30% the speed of light. (C) 2017 Science China Press. Published by Elsevier B.V. and Science China Press. All rights reserved.
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