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  Polarimetry of relativistic tidal disruption event Swift J2058+0516

Wiersema, K., Higgins, A. B., Levan, A. J., Eyles, R. A. J., Starling, R. L. C., Tanvir, N. R., et al. (2019). Polarimetry of relativistic tidal disruption event Swift J2058+0516. Monthly Notices of the Royal Astronomical Society, 491(2), 1771-1776. doi:10.1093/mnras/stz3106.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0006-3F6B-D Version Permalink: http://hdl.handle.net/21.11116/0000-0006-3F75-1
Genre: Journal Article

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Polarimetry of relativistic tidal disruption event Swift J2058+0516.pdf (Any fulltext), 444KB
 
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Wiersema, K., Author
Higgins, A. B., Author
Levan, A. J., Author
Eyles, R. A. J., Author
Starling, R. L. C., Author
Tanvir, N. R., Author
Cenko, S. B., Author
van der Horst, A. J., Author
Gompertz, B. P., Author
Greiner, J.1, Author              
Pasham, D. R., Author
Affiliations:
1High Energy Astrophysics, MPI for Extraterrestrial Physics, Max Planck Society, ou_159890              

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 Abstract: A small fraction of candidate tidal disruption events (TDEs) show evidence of powerful relativistic jets, which are particularly pronounced at radio wavelengths, and likely contribute non-thermal emission at a wide range of wavelengths. A non-thermal emission component can be diagnosed using linear polarimetry, even when the total received light is dominated by emission from an accretion disc or disc outflow. In this paper, we present Very Large Telescope (VLT) measurements of the linear polarization of the optical light of jetted TDE Swift J2058+0516. This is the second jetted TDE studied in this manner, after Swift J1644+57. We find evidence of non-zero optical linear polarization, PV∼8percent⁠, a level very similar to the near-infrared polarimetry of Swift J1644+57. These detections provide an independent test of the emission mechanisms of the multiwavelength emission of jetted TDEs.

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 Dates: 2019-11-06
 Publication Status: Published online
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 Rev. Method: Peer
 Identifiers: DOI: 10.1093/mnras/stz3106
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Title: Monthly Notices of the Royal Astronomical Society
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Source Genre: Journal
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Publ. Info: OXFORD : OXFORD UNIV PRESS
Pages: - Volume / Issue: 491 (2) Sequence Number: - Start / End Page: 1771 - 1776 Identifier: ISSN: 0035-8711
CoNE: https://pure.mpg.de/cone/journals/resource/1000000000021470