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Compact radio emission indicates a structured jet was produced by a binary neutron star merger | |
Ghirlanda, G.1,2,3; Salafia, O. S.1,2,3; Paragi, Z.4; Giroletti, M.5; Yang, J.6,7![]() | |
2019-03-01 | |
Source Publication | SCIENCE
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ISSN | 0036-8075 |
Volume | 363Issue:6430Pages:968-+ |
Corresponding Author | Ghirlanda, G.(giancarlo.ghirlanda@brera.inaf.it) ; Salafia, O. S.(omsharan.salafia@brera.inaf.it) |
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. |
DOI | 10.1126/science.aau8815 |
WOS Keyword | AFTERGLOW LIGHT CURVES ; ELECTROMAGNETIC COUNTERPART ; LUMINOSITY FUNCTION ; GRB JETS ; RAY ; GW170817 |
Indexed By | SCI |
Language | 英语 |
WOS Research Area | Science & Technology - Other Topics |
WOS Subject | Multidisciplinary Sciences |
WOS ID | WOS:000460194200043 |
Publisher | AMER ASSOC ADVANCEMENT SCIENCE |
Citation statistics | |
Document Type | 期刊论文 |
Identifier | http://libir.pmo.ac.cn/handle/332002/23923 |
Collection | 中国科学院紫金山天文台 |
Corresponding Author | Ghirlanda, G.; Salafia, O. S. |
Affiliation | 1.Osserv Astron Brera, Ist Nazl Astrofis, Via E Bianchi 46, I-23807 Merate, Italy 2.Univ Milano Bicocca, Dipartimento Fis G Occhialini, Piazza Sci 3, IT-20126 Milan, Italy 3.Ist Nazl Fis Nucl, Sez Milano Bicocca, Piazza Sci 3, I-20126 Milan, Italy 4.Joint Inst Very Long Baseline Interferometry VLBI, Oude Hoogeveensedijk 4, NL-7991 PD Dwingeloo, Netherlands 5.Ist Nazl Astrofis, Ist Radioastron, Via Gobetti 101, I-40129 Bologna, Italy 6.Chalmers Univ Technol, Onsala Space Observ, S-43992 Gothenburg, Sweden 7.Chinese Acad Sci, Yunnan Observ, Kunming 650216, Yunnan, Peoples R China 8.CSIC, Inst Astrofis Andalucia, Glorieta Astron S-N, E-18008 Granada, Spain 9.Chinese Acad Sci, Shanghai Astron Observ, Key Lab Radio Astron, Shanghai 200030, Peoples R China 10.Univ Montpellier, Lab Univers & Particules Montpellier, Inst Natl Phys Nucl & Phys Particules, CNRS,IN2P3, Pl Eugene Bataillon, F-34085 Montpellier, France 11.Univ Manchester, Elect Multielement Radio Linked Interferomer Netw, Jodrell Bank Ctr Astrophys, Sch Phys & Astron, Manchester, Lancs, England 12.Gran Sasso Sci Inst, Viale F Crispi 7, I-67100 Laquila, Italy 13.INFN, Lab Nazl Gran Sasso, I-67100 Laquila, Italy 14.Max Planck Inst Radioastron, Huegel 69, D-53121 Bonn, Germany 15.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 16.ASI, Space Sci Data Ctr, Via Politecn, I-00133 Rome, Italy 17.Hungarian Acad Sci, Konkoly Observ, Res Ctr Astron & Earth Sci, Konkoly Thege Miklos Ut 15-17, H-1121 Budapest, Hungary 18.Nicolaus Copernicus Univ, Ctr Astron, Fac Phys Astron & Informat, Grudziadzka 5, PL-87100 Torun, Poland 19.Delft Univ Technol, Dept Astrodynam & Space Mission, Kluyverweg 1, NL-2629 HS Delft, Netherlands 20.SRON Netherlands Inst Space Res, SRON, Sorbonnelaan 2, NL-3584 CA Utrecht, Netherlands 21.Radboud Univ Nijmegen, Dept Astrophys, IMAPP, POB 9010, NL-6500 GL Nijmegen, Netherlands 22.Leiden Univ, Sterrewacht Leiden, POB 9513, NL-2300 RA Leiden, Netherlands 23.Univ Zaragoza, Dept Fis Teor, Fac Ciencias, E-50019 Zaragoza, Spain 24.Commonwealth Sci & Ind Res Org CSIRO Astron & Spa, POB 1130, Bentley, WA 6102, Australia 25.Ist Nazl Astrofis, Ist Astrofis Spaziale & Fis Cosm IASF, Via E Bassini 15, I-20133 Milan, Italy 26.Galaxies Etoiles Phys & Instrumentat GEPI Obsev P, CNRS, UMR 8111, Meudon, France 27.Chinese Acad Sci, Xinjiang Astron Observ, 150 Sci 1 St, Urumqi 831001, Peoples R China 28.Chinese Acad Sci, Key Lab Radio Astron, 2 West Beijing Rd, Nanjing 210008, Jiangsu, Peoples R China 29.INAF, Osservatorio Astronom Brera, Milan, Italy 30.Univ Trento, Dept Phys, Via Sommar 14, I-38123 Trento, Italy |
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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