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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

AuthorGhirlanda, G.1,2,3; Salafia, O. S.1,2,3; Paragi, Z.4; Giroletti, M.5; Yang J(杨军)6,7; Marcote, B.4; Blanchard, J.4; Agudo, I.8; An, T.9; Bernardini, M. G.10,29
SourceSCIENCE
Issued Date2019-03-01
Volume363Issue:6430Pages:968-+
ISSN0036-8075
DOI10.1126/science.aau8815
Rank第7完成单位
SubtypeArticle
English Abstract

The 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.

Subject天文学 ; 射电天文学 ; 恒星与银河系
URL查看原文
Publish Place1200 NEW YORK AVE, NW, WASHINGTON, DC 20005 USA
WOS KeywordAFTERGLOW LIGHT CURVES ; ELECTROMAGNETIC COUNTERPART ; LUMINOSITY FUNCTION ; GRB JETS ; RAY ; GW170817
Funding ProjectNational 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] ; Australian Government
WOS Research AreaScience & Technology - Other Topics
Language英语
WOS IDWOS:000460194200043
PublisherAMER ASSOC ADVANCEMENT SCIENCE
Funding OrganizationNational 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, FPA2015-69210-C6-2-R, MDM-2014-0369] ; Spanish MINECO[AYA2012-38491-C02-02, 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] ; Australian Government
源URL[http://ir.ynao.ac.cn/handle/114a53/19519]  
Collection云南天文台_射电天文研究组
Corresponding AuthorGhirlanda, G.; Salafia, O. S.
Affiliation1.Istituto Nazionale di Astrofisica–Osservatorio Astronomico di Brera, Via E. Bianchi 46, I-23807 Merate, Italy
2.Dipartimento di Fisica G. Occhialini, Università di Milano-Bicocca, Piazza della Scienza 3, IT-20126 Milano, Italy
3.Sezione di Milano Bicocca, Istituto Nazionale Fisica Nucleare (INFN), Piazza della Scienza 3, 20126 Milano, Italy
4.Joint Institute for Very Long Baseline Interferometry (VLBI) European Research Infrastructure Consortium (ERIC), Oude Hoogeveensedijk 4, 7991 PD Dwingeloo, Netherlands
5.Istituto Nazionale di Astrofisica–Istituto di Radioastronomia, via Gobetti 101, I40129, Bologna, Italia
6.Chalmers University of Technology, Onsala Space Observatory, SE-439 92, Sweden
7.Yunnan Observatories, Chinese Academy of Sciences, 650216 Kunming, Yunnan, China
8.Instituto de Astrofísica de Andalucía–Consejo Superior de Investigaciones Científicas (CSIC), Glorieta de la Astronomía s/n, E-18008, Granada, Spain
9.Shanghai Astronomical Observatory, Key Laboratory of Radio Astronomy, Chinese Academy of Sciences, 200030 Shanghai, China
10.Laboratoire Univers et Particules de Montpellier, Universitè de Montpellier, Centre National de la Recherche Scientifique/Institute National de Physique Nucleaire et Physique des Particules (CNRS/IN2P3), place Eugéne Bataillon, F–34085 Montpellier, France
Recommended Citation
GB/T 7714
Ghirlanda, G.,Salafia, O. S.,Paragi, Z.,et al. Compact radio emission indicates a structured jet was produced by a binary neutron star merger[J]. SCIENCE,2019,363(6430):968-+.
APA Ghirlanda, G..,Salafia, O. S..,Paragi, Z..,Giroletti, M..,Yang J.,...&Zhang, M..(2019).Compact radio emission indicates a structured jet was produced by a binary neutron star merger.SCIENCE,363(6430),968-+.
MLA Ghirlanda, G.,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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来源:云南天文台

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