The Library
A radio-emitting outflow produced by the tidal disruption event AT2020vwl
Tools
Goodwin, A. J., Alexander, K. D., Miller-Jones, J. C. A., Bietenholz, M. F., van Velzen, S., Anderson, G. E., Berger, E., Cendes, Y., Chornock, R., Coppejans, Deanne, Eftekhari, T., Gezari, S., Laskar, T., Ramirez-Ruiz, E. and Saxton, R. (2023) A radio-emitting outflow produced by the tidal disruption event AT2020vwl. Monthly Notices of the Royal Astronomical Society, 522 (4). pp. 5084-5097. doi:10.1093/mnras/stad1258 ISSN 1365-2966.
|
PDF
WRAP-radio-emitting-outflow-produced-tidal-disruption-AT2020vwl-23.pdf - Accepted Version - Requires a PDF viewer. Download (1903Kb) | Preview |
Official URL: https://doi.org/10.1093/mnras/stad1258
Abstract
A tidal disruption event (TDE) occurs when a star is destroyed by a supermassive black hole. Broadband 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 broadband 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 years post-optical flare. We tracked the outflow evolution as it expanded between 1016 cm to 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-characterised 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.
Item Type: | Journal Article | |||||||||
---|---|---|---|---|---|---|---|---|---|---|
Subjects: | Q Science > QB Astronomy | |||||||||
Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | |||||||||
SWORD Depositor: | Library Publications Router | |||||||||
Library of Congress Subject Headings (LCSH): | Transients (Dynamics) , Black holes (Astronomy), Radio astronomy | |||||||||
Journal or Publication Title: | Monthly Notices of the Royal Astronomical Society | |||||||||
Publisher: | Oxford University Press (OUP) | |||||||||
ISSN: | 1365-2966 | |||||||||
Official Date: | July 2023 | |||||||||
Dates: |
|
|||||||||
Volume: | 522 | |||||||||
Number: | 4 | |||||||||
Page Range: | pp. 5084-5097 | |||||||||
DOI: | 10.1093/mnras/stad1258 | |||||||||
Status: | Peer Reviewed | |||||||||
Publication Status: | Published | |||||||||
Reuse Statement (publisher, data, author rights): | This article has been accepted for publication in Monthly Notices of the Royal Astronomical Society © 2023 The Author(s) Published by Oxford University Press on behalf of Royal Astronomical Society. All rights reserved. | |||||||||
Access rights to Published version: | Restricted or Subscription Access | |||||||||
Copyright Holders: | © 2023 The Author(s) Published by Oxford University Press on behalf of Royal Astronomical Society | |||||||||
Date of first compliant deposit: | 8 August 2023 | |||||||||
Date of first compliant Open Access: | 8 August 2023 | |||||||||
RIOXX Funder/Project Grant: |
|
|||||||||
Related URLs: |
Request changes or add full text files to a record
Repository staff actions (login required)
View Item |
Downloads
Downloads per month over past year