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.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 |
| 刊名 | SCIENCE
 |
| 出版日期 | 2019-03-01 |
| 卷号 | 363期号:6430页码:968-+ |
| ISSN号 | 0036-8075 |
| DOI | 10.1126/science.aau8815 |
| 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. |
| 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 |
| WOS记录号 | WOS:000460194200043 |
| 出版者 | AMER ASSOC ADVANCEMENT SCIENCE |
| 源URL | [http://119.78.226.72/handle/331011/31903]  |
| 专题 | 中国科学院上海天文台 |
| 通讯作者 | Ghirlanda, G.; Salafia, O. S. |
| 作者单位 | 1.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 |
| 推荐引用方式 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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