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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.13,28,29; Salafia, O. S.13,28,29; Paragi, Z.27; Giroletti, M.26; Yang, J.24,25; Marcote, B.27; Blanchard, J.27; Agudo, I.12; An, T.30; Bernardini, M. G.1,15
SourceSCIENCE
Issued Date2019-03-01
Volume363Issue:6430Pages:968-+
ISSN0036-8075
DOI10.1126/science.aau8815
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.
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
源URL[http://119.78.226.72/handle/331011/31903]  
Collection中国科学院上海天文台
Corresponding AuthorGhirlanda, G.; Salafia, O. S.
Affiliation1.Univ Montpellier, Lab Univers & Particules Montpellier, Inst Natl Phys Nucl & Phys Particules, CNRS,IN2P3, Pl Eugene Bataillon, F-34085 Montpellier, France
2.Univ Manchester, Elect Multielement Radio Linked Interferomer Netw, Jodrell Bank Ctr Astrophys, Sch Phys & Astron, Manchester, Lancs, England
3.Gran Sasso Sci Inst, Viale F Crispi 7, I-67100 Laquila, Italy
4.INFN, Lab Nazl Gran Sasso, I-67100 Laquila, Italy
5.Max Planck Inst Radioastron, Huegel 69, D-53121 Bonn, Germany
6.Univ Paris Diderot, Commissariat Energie Atom & Energies Alternat, Inst Res Fundamental Laws Universe CEA IRFU,Sorbo, AstroParticule & Cosmol APC,CNRS,IN2P3,Observ Par, F-75205 Paris 13, France
7.ASI, Space Sci Data Ctr, Via Politecn, I-00133 Rome, Italy
8.Hungarian Acad Sci, Konkoly Observ, Res Ctr Astron & Earth Sci, Konkoly Thege Miklos Ut 15-17, H-1121 Budapest, Hungary
9.Nicolaus Copernicus Univ, Ctr Astron, Fac Phys Astron & Informat, Grudziadzka 5, PL-87100 Torun, Poland
10.Delft Univ Technol, Dept Astrodynam & Space Mission, Kluyverweg 1, NL-2629 HS Delft, Netherlands
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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