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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

作者Ghirlanda, 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
刊名SCIENCE
出版日期2019-03-01
卷号363期号:6430页码:968-+
ISSN号0036-8075
DOI10.1126/science.aau8815
产权排序第7完成单位
文献子类Article
英文摘要

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.

学科主题天文学 ; 射电天文学 ; 恒星与银河系
URL标识查看原文
出版地1200 NEW YORK AVE, NW, WASHINGTON, DC 20005 USA
WOS关键词AFTERGLOW LIGHT CURVES ; ELECTROMAGNETIC COUNTERPART ; LUMINOSITY FUNCTION ; GRB JETS ; RAY ; GW170817
资助项目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] ; Australian Government
WOS研究方向Science & Technology - Other Topics
语种英语
出版者AMER ASSOC ADVANCEMENT SCIENCE
WOS记录号WOS:000460194200043
资助机构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, 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]  
专题云南天文台_射电天文研究组
通讯作者Ghirlanda, G.; Salafia, O. S.
作者单位1.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
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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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