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Multi-messenger Observations of a Binary Neutron Star Merger

文献类型:期刊论文

AuthorAbbott, B. P.1; Abbott, R.1; Abbott, T. D.2; Acernese, F.3,4; Ackley, K.5,6; Adams, C.7; Adams, T.; Addesso, P.9,10; Adhikari, R. X.1; Adya, V. B.11
SourceASTROPHYSICAL JOURNAL LETTERS
Issued Date2017-10-20
Volume848Issue:2
ISSN2041-8205
KeywordGravitational Waves Stars: Neutron
DOI10.3847/2041-8213/aa91c9
Rank第463完成单位
SubtypeArticle
English AbstractOn 2017 August 17 a binary neutron star coalescence candidate (later designated GW170817) with merger time 12:41:04 UTC was observed through gravitational waves by the Advanced LIGO and Advanced Virgo detectors. The Fermi Gamma-ray Burst Monitor independently detected a gamma-ray burst (GRB 170817A) with a time delay of similar to 1.7 s with respect to the merger time. From the gravitational-wave signal, the source was initially localized to a sky region of 31 deg(2) at a luminosity distance of 40(-8)(+8) Mpc and with component masses consistent with neutron stars. The component masses were later measured to be in the range 0.86 to 2.26 M-circle dot. An extensive observing campaign was launched across the electromagnetic spectrum leading to the discovery of a bright optical transient (SSS17a, now with the IAU identification of AT 2017gfo) in NGC 4993 (at similar to 40 Mpc) less than 11 hours after the merger by the One-Meter, Two Hemisphere (1M2H) team using the 1 m Swope Telescope. The optical transient was independently detected by multiple teams within an hour. Subsequent observations targeted the object and its environment. Early ultraviolet observations revealed a blue transient that faded within 48 hours. Optical and infrared observations showed a redward evolution over similar to 10 days. Following early non-detections, X-ray and radio emission were discovered at the transient's position similar to 9 and similar to 16 days, respectively, after the merger. Both the X-ray and radio emission likely arise from a physical process that is distinct from the one that generates the UV/optical/near-infrared emission. No ultra-high-energy gamma-rays and no neutrino candidates consistent with the source were found in follow-up searches. These observations support the hypothesis that GW170817 was produced by the merger of two neutron stars in NGC4993 followed by a short gamma-ray burst (GRB 170817A) and a kilonova/macronova powered by the radioactive decay of r-process nuclei synthesized in the ejecta.
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WOS KeywordGAMMA-RAY BURSTS ; NEARBY SUPERNOVA RATES ; GRAVITATIONAL-WAVES ; RELATIVISTIC GRAVITY ; PULSAR PSR-1913+16 ; OPTICAL AFTERGLOWS ; COMPACT OBJECTS ; RADIO TELESCOPE ; CLOSE BINARIES ; BLACK-HOLES
Funding ProjectN/A
WOS Research AreaAstronomy & Astrophysics
Language英语
WOS IDWOS:000413211000001
Funding OrganizationN/A
源URL[http://ir.ynao.ac.cn/handle/114a53/12070]  
Collection云南天文台_丽江天文观测站(南方基地)
Corresponding AuthorAbbott, B. P.; Abbott, B. P.(CALTECH, LIGO, Pasadena, CA 91125 USA)
Affiliation1.CALTECH, LIGO, Pasadena, CA 91125 USA
2.Louisiana State Univ, Baton Rouge, LA 70803 USA
3.Univ Salerno, I-84084 Salerno, Italy
4.Complesso Univ Monte S Angelo04, Ist Nazl Fis Nucl, Sez Napoli, I-80126 Naples, Italy
5.Univ Florida, Gainesville, FL 32611 USA
6.Monash Univ, Sch Phys & Astron, OzGrav, Clayton, Vic 3800, Australia
7.LIGO Livingston Observ, Livingston, LA 70754 USA
8.Univ Savoie Mont Blanc, CNRS, IN2P3, Lab Annecy Le Vieux Phys Particules LAPP, F-74941 Annecy, France
9.Univ Sannio Benevento, I-82100 Benevento, Italy
10.Ist Nazl Fis Nucl, Sez Napoli, I-80100 Naples, Italy
Recommended Citation
GB/T 7714
Abbott, B. P.,Abbott, R.,Abbott, T. D.,et al. Multi-messenger Observations of a Binary Neutron Star Merger[J]. ASTROPHYSICAL JOURNAL LETTERS,2017,848(2).
APA Abbott, B. P..,Abbott, R..,Abbott, T. D..,Acernese, F..,Ackley, K..,...&Abbott, B. P..(2017).Multi-messenger Observations of a Binary Neutron Star Merger.ASTROPHYSICAL JOURNAL LETTERS,848(2).
MLA Abbott, B. P.,et al."Multi-messenger Observations of a Binary Neutron Star Merger".ASTROPHYSICAL JOURNAL LETTERS 848.2(2017).

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