A radio-emitting outflow produced by the tidal disruption event AT2020vwl
A tidal disruption event (TDE) occurs when a star is destroyed by a supermassive black hole. Broad-band radio spectral observations of TDEs trace the emission from any outflows or jets that are ejected from the vicinity of the supermassive black hole. However, radio detections of TDEs are rare, with...
| Main Authors: | , , , , , , , , , , , , , , |
|---|---|
| Format: | Journal Article |
| Published: |
2023
|
| Online Access: | http://purl.org/au-research/grants/arc/DP200102471 http://hdl.handle.net/20.500.11937/96440 |
| _version_ | 1848766152581316608 |
|---|---|
| author | Goodwin, Adelle Alexander, K.D. Miller-Jones, James Bietenholz, M.F. van Velzen, S. Anderson, Gemma Berger, E. Cendes, Y. Chornock, R. Coppejans, D.L. Eftekhari, T. Gezari, S. Laskar, T. Ramirez-Ruiz, E. Saxton, R. |
| author_facet | Goodwin, Adelle Alexander, K.D. Miller-Jones, James Bietenholz, M.F. van Velzen, S. Anderson, Gemma Berger, E. Cendes, Y. Chornock, R. Coppejans, D.L. Eftekhari, T. Gezari, S. Laskar, T. Ramirez-Ruiz, E. Saxton, R. |
| author_sort | Goodwin, Adelle |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | A tidal disruption event (TDE) occurs when a star is destroyed by a supermassive black hole. Broad-band radio spectral observations of TDEs trace the emission from any outflows or jets that are ejected from the vicinity of the supermassive black hole. However, radio detections of TDEs are rare, with <20 published to date, and only 11 with multi-epoch broad-band coverage. Here we present the radio detection of the TDE AT2020vwl and our subsequent radio monitoring campaign of the outflow that was produced, spanning 1.5 yr post-optical flare. We tracked the outflow evolution as it expanded between 1016 and 1017 cm from the supermassive black hole, deducing it was non-relativistic and launched quasi-simultaneously with the initial optical detection through modelling the evolving synchrotron spectra of the event. We deduce that the outflow is likely to have been launched by material ejected from stream-stream collisions (more likely), the unbound debris stream, or an accretion-induced wind or jet from the supermassive black hole (less likely). AT2020vwl joins a growing number of TDEs with well-characterized prompt radio emission, with future timely radio observations of TDEs required to fully understand the mechanism that produces this type of radio emission in TDEs. |
| first_indexed | 2025-11-14T11:46:36Z |
| format | Journal Article |
| id | curtin-20.500.11937-96440 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T11:46:36Z |
| publishDate | 2023 |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-964402024-12-17T06:48:47Z A radio-emitting outflow produced by the tidal disruption event AT2020vwl Goodwin, Adelle Alexander, K.D. Miller-Jones, James Bietenholz, M.F. van Velzen, S. Anderson, Gemma Berger, E. Cendes, Y. Chornock, R. Coppejans, D.L. Eftekhari, T. Gezari, S. Laskar, T. Ramirez-Ruiz, E. Saxton, R. A tidal disruption event (TDE) occurs when a star is destroyed by a supermassive black hole. Broad-band radio spectral observations of TDEs trace the emission from any outflows or jets that are ejected from the vicinity of the supermassive black hole. However, radio detections of TDEs are rare, with <20 published to date, and only 11 with multi-epoch broad-band coverage. Here we present the radio detection of the TDE AT2020vwl and our subsequent radio monitoring campaign of the outflow that was produced, spanning 1.5 yr post-optical flare. We tracked the outflow evolution as it expanded between 1016 and 1017 cm from the supermassive black hole, deducing it was non-relativistic and launched quasi-simultaneously with the initial optical detection through modelling the evolving synchrotron spectra of the event. We deduce that the outflow is likely to have been launched by material ejected from stream-stream collisions (more likely), the unbound debris stream, or an accretion-induced wind or jet from the supermassive black hole (less likely). AT2020vwl joins a growing number of TDEs with well-characterized prompt radio emission, with future timely radio observations of TDEs required to fully understand the mechanism that produces this type of radio emission in TDEs. 2023 Journal Article http://hdl.handle.net/20.500.11937/96440 10.1093/mnras/stad1258 http://purl.org/au-research/grants/arc/DP200102471 fulltext |
| spellingShingle | Goodwin, Adelle Alexander, K.D. Miller-Jones, James Bietenholz, M.F. van Velzen, S. Anderson, Gemma Berger, E. Cendes, Y. Chornock, R. Coppejans, D.L. Eftekhari, T. Gezari, S. Laskar, T. Ramirez-Ruiz, E. Saxton, R. A radio-emitting outflow produced by the tidal disruption event AT2020vwl |
| title | A radio-emitting outflow produced by the tidal disruption event AT2020vwl |
| title_full | A radio-emitting outflow produced by the tidal disruption event AT2020vwl |
| title_fullStr | A radio-emitting outflow produced by the tidal disruption event AT2020vwl |
| title_full_unstemmed | A radio-emitting outflow produced by the tidal disruption event AT2020vwl |
| title_short | A radio-emitting outflow produced by the tidal disruption event AT2020vwl |
| title_sort | radio-emitting outflow produced by the tidal disruption event at2020vwl |
| url | http://purl.org/au-research/grants/arc/DP200102471 http://hdl.handle.net/20.500.11937/96440 |