Compact radio emission indicates a structured jet was produced by a binary neutron star merger
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 displaceme...
| Authors: | ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; |
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| Format: | Article |
| Status: | Accepted version |
| Publication date: | 2019 |
| Country: | España |
| Institution: | Universidad de Zaragoza |
| Repository: | Zaguán. Repositorio Digital de la Universidad de Zaragoza |
| OAI Identifier: | oai:zaguan.unizar.es:78946 |
| Online Access: | http://zaguan.unizar.es/record/78946 |
| Access Level: | Open access |
| _version_ | 1878735563241029632 |
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| author | Ghirlanda, G. |
| author2 | Salafia, O.S. Paragi, Z. Giroletti, M. Yang, J. Marcote, B. Blanchard, J. Agudo, I. An, T. Bernardini, M.G. Beswick, R. Branchesi, M. Campana, S. Casadio, C. Chassande-Mottin, E. Colpi, M. Covino, S. D''Avanzo, P. D''Elia, V. Frey, S. Gawronski, M. Ghisellini, G. Gurvits, L.I. Jonker, P.G. Van Langevelde, H.J. Melandri, A. Moldon, J. Nava, L. Perego, A. Perez-Torres, M.A. Reynolds, C. Salvaterra, R. Tagliaferri, G. Venturi, T. Vergani, S.D. Zhang, M. |
| author2_role | author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author |
| author_browse | Agudo, I. An, T. Bernardini, M.G. Beswick, R. Blanchard, J. Branchesi, M. Campana, S. Casadio, C. Chassande-Mottin, E. Colpi, M. Covino, S. D''Avanzo, P. D''Elia, V. Frey, S. Gawronski, M. Ghirlanda, G. Ghisellini, G. Giroletti, M. Gurvits, L.I. Jonker, P.G. Marcote, B. Melandri, A. Moldon, J. Nava, L. Paragi, Z. Perego, A. Perez-Torres, M.A. Reynolds, C. Salafia, O.S. Salvaterra, R. Tagliaferri, G. Van Langevelde, H.J. Venturi, T. Vergani, S.D. Yang, J. Zhang, M. |
| author_facet | Ghirlanda, G. Salafia, O.S. Paragi, Z. Giroletti, M. Yang, J. Marcote, B. Blanchard, J. Agudo, I. An, T. Bernardini, M.G. Beswick, R. Branchesi, M. Campana, S. Casadio, C. Chassande-Mottin, E. Colpi, M. Covino, S. D''Avanzo, P. D''Elia, V. Frey, S. Gawronski, M. Ghisellini, G. Gurvits, L.I. Jonker, P.G. Van Langevelde, H.J. Melandri, A. Moldon, J. Nava, L. Perego, A. Perez-Torres, M.A. Reynolds, C. Salvaterra, R. Tagliaferri, G. Venturi, T. Vergani, S.D. Zhang, M. |
| author_role | author |
| collection | Zaguán. Repositorio Digital de la Universidad de Zaragoza |
| description | 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. |
| eu_rights_str_mv | openAccess |
| format | article |
| id | ES_7f3a4f4e200bfaf3a32ffaebc15b8e1e |
| institution | Universidad de Zaragoza |
| instname_str | Universidad de Zaragoza |
| network_acronym_str | ES |
| network_name_str | España |
| oai_identifier_str | oai:zaguan.unizar.es:78946 |
| publishDate | 2019 |
| publishDateSort | 2019 |
| reponame_str | Zaguán. Repositorio Digital de la Universidad de Zaragoza |
| spelling | Compact radio emission indicates a structured jet was produced by a binary neutron star merger Ghirlanda, G. Salafia, O.S. Paragi, Z. Giroletti, M. Yang, J. Marcote, B. Blanchard, J. Agudo, I. An, T. Bernardini, M.G. Beswick, R. Branchesi, M. Campana, S. Casadio, C. Chassande-Mottin, E. Colpi, M. Covino, S. D''Avanzo, P. D''Elia, V. Frey, S. Gawronski, M. Ghisellini, G. Gurvits, L.I. Jonker, P.G. Van Langevelde, H.J. Melandri, A. Moldon, J. Nava, L. Perego, A. Perez-Torres, M.A. Reynolds, C. Salvaterra, R. Tagliaferri, G. Venturi, T. Vergani, S.D. Zhang, M. 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. http://zaguan.unizar.es/record/78946 |
| spellingShingle | Compact radio emission indicates a structured jet was produced by a binary neutron star merger Ghirlanda, G. |
| status_str | acceptedVersion |
| title | Compact radio emission indicates a structured jet was produced by a binary neutron star merger |
| title_full | Compact radio emission indicates a structured jet was produced by a binary neutron star merger |
| title_fullStr | Compact radio emission indicates a structured jet was produced by a binary neutron star merger |
| title_full_unstemmed | Compact radio emission indicates a structured jet was produced by a binary neutron star merger |
| title_short | Compact radio emission indicates a structured jet was produced by a binary neutron star merger |
| title_sort | Compact radio emission indicates a structured jet was produced by a binary neutron star merger |
| url | http://zaguan.unizar.es/record/78946 |