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Compact radio emission indicates a structured jet was produced by a binary neutron star merger

文献类型:期刊论文

AuthorAn, T.23; Agudo, I.28; Blanchard, J.27; Marcote, B.27; Yang, J.29,30; Giroletti, M.1; Paragi, Z.27; Salafia, O. S.24,25,26; Ghirlanda, G.24,25,26; Perez-Torres, M. A.9,28
SourceSCIENCE
Issued Date2019-03-01
Volume363Issue:6430Pages:968-+
ISSN0036-8075
DOI10.1126/science.aau8815
Rank27
English AbstractThe binary neutron star merger event GW170817 was detected through both electromagnetic radiation and gravitational waves. Its afterglow emission may have been produced by either a narrow relativistic jet or an isotropic outflow. High-spatial-resolution measurements of the source size and displacement can discriminate between these scenarios. We present very-long-baseline interferometry observations, performed 207.4 days after the merger by using a global network of 32 radio telescopes. The apparent source size is constrained to be smaller than 2.5 milli-arc seconds at the 90% confidence level. This excludes the isotropic outflow scenario, which would have produced a larger apparent size, indicating that GW170817 produced a structured relativistic jet. Our rate calculations show that at least 10% of neutron star mergers produce such a jet.
WOS KeywordAFTERGLOW LIGHT CURVES ; ELECTROMAGNETIC COUNTERPART ; LUMINOSITY FUNCTION ; GRB JETS ; RAY ; GW170817
Funding ProjectAustralian Government ; National Institute of Astrophysics[1.05.01.88.06] ; Italian Ministry for University and Research (MIUR)[1.05.06.13] ; ASI[I/004/11/3] ; European Commission Horizon 2020 Research and Innovation Programme[730562] ; Spanish Ministerio de Economa y Competitividad (MINECO) of ICCUB (Unidad de Excelencia Mara de Maeztu)[AYA201676012-C3-1-P] ; Spanish Ministerio de Economa y Competitividad (MINECO) of ICCUB (Unidad de Excelencia Mara de Maeztu)[FPA2015-69210-C6-2-R] ; Spanish Ministerio de Economa y Competitividad (MINECO) of ICCUB (Unidad de Excelencia Mara de Maeztu)[MDM-2014-0369] ; Spanish MINECO[AYA2012-38491-C02-02] ; Spanish MINECO[AYA2015-63939-C2-1-P] ; National Key R&D Programme of China[2018YFA0404603] ; European Union's Horizon 2020 research and innovation program[653477] ; Hungarian National Research, Development and Innovation Office[OTKA NN110333]
WOS Research AreaScience & Technology - Other Topics
Language英语
WOS IDWOS:000460194200043
PublisherAMER ASSOC ADVANCEMENT SCIENCE
源URL[http://ir.xao.ac.cn/handle/45760611-7/2539]  
Collection研究单元未命名
新疆天文台_射电天文研究室
Corresponding AuthorSalafia, O. S.; Ghirlanda, G.
Affiliation1.Ist Nazl Astrofis, Ist Radioastron, Via Gobetti 101, I-40129 Bologna, Italy
2.Univ Trento, Dept Phys, Via Sommar 14, I-38123 Trento, Italy
3.INAF, Osservatorio Astronom Brera, Milan, Italy
4.Chinese Acad Sci, Key Lab Radio Astron, 2 West Beijing Rd, Nanjing 210008, Jiangsu, Peoples R China
5.Chinese Acad Sci, Xinjiang Astron Observ, 150 Sci 1 St, Urumqi 831001, Peoples R China
6.Galaxies Etoiles Phys & Instrumentat GEPI Obsev P, CNRS, UMR 8111, Meudon, France
7.Ist Nazl Astrofis, Ist Astrofis Spaziale & Fis Cosm IASF, Via E Bassini 15, I-20133 Milan, Italy
8.Commonwealth Sci & Ind Res Org CSIRO Astron & Spa, POB 1130, Bentley, WA 6102, Australia
9.Univ Zaragoza, Dept Fis Teor, Fac Ciencias, E-50019 Zaragoza, Spain
10.Leiden Univ, Sterrewacht Leiden, POB 9513, NL-2300 RA Leiden, Netherlands
Recommended Citation
GB/T 7714
An, T.,Agudo, I.,Blanchard, J.,et al. Compact radio emission indicates a structured jet was produced by a binary neutron star merger[J]. SCIENCE,2019,363(6430):968-+.
APA An, T..,Agudo, I..,Blanchard, J..,Marcote, B..,Yang, J..,...&Perego, A..(2019).Compact radio emission indicates a structured jet was produced by a binary neutron star merger.SCIENCE,363(6430),968-+.
MLA An, T.,et al."Compact radio emission indicates a structured jet was produced by a binary neutron star merger".SCIENCE 363.6430(2019):968-+.

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