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- Publisher Website: 10.3847/2041-8213/aab429
- Scopus: eid_2-s2.0-85048294827
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Article: A Unified Model for Tidal Disruption Events
Title | A Unified Model for Tidal Disruption Events |
---|---|
Authors | |
Keywords | magnetohydrodynamics (MHD) radiative transfer quasars: supermassive black holes black hole physics accretion, accretion disks |
Issue Date | 2018 |
Citation | Astrophysical Journal Letters, 2018, v. 859, n. 2, article no. L20 How to Cite? |
Abstract | © 2018. The American Astronomical Society. All rights reserved. In the past few years wide-field optical and UV transient surveys and X-ray telescopes have allowed us to identify a few dozen candidate tidal disruption events (TDEs). While in theory the physical processes in TDEs are ubiquitous, a few distinct classes of TDEs have been observed. Some TDEs radiate mainly in NUV/optical, while others produce prominent X-rays. Moreover, relativistic jets have been observed in only a handful of TDEs. This diversity might be related to the details of the super-Eddington accretion and emission physics relevant to TDE disks. In this Letter, we utilize novel three-dimensional general relativistic radiation magnetohydrodynamics simulations to study the super-Eddington compact disk phase expected in TDEs. Consistent with previous studies, geometrically thick disks, wide-angle optically thick fast outflows, and relativistic jets are produced. The outflow density and velocity depend sensitively on the inclination angle, and hence so does the reprocessing of emission produced from the inner disk. We then use Monte Carlo radiative transfer to calculate the reprocessed spectra and find that that the observed ratio of optical to X-ray fluxes increases with increasing inclination angle. This naturally leads to a unified model for different classes of TDEs in which the spectral properties of the TDE depend mainly on the viewing angle of the observer with respect to the orientation of the disk. |
Persistent Identifier | http://hdl.handle.net/10722/269662 |
ISSN | 2023 Impact Factor: 8.8 2023 SCImago Journal Rankings: 2.766 |
ISI Accession Number ID |
DC Field | Value | Language |
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dc.contributor.author | Dai, Lixin | - |
dc.contributor.author | McKinney, Jonathan C. | - |
dc.contributor.author | Roth, Nathaniel | - |
dc.contributor.author | Ramirez-Ruiz, Enrico | - |
dc.contributor.author | Miller, M. Coleman | - |
dc.date.accessioned | 2019-04-30T01:49:14Z | - |
dc.date.available | 2019-04-30T01:49:14Z | - |
dc.date.issued | 2018 | - |
dc.identifier.citation | Astrophysical Journal Letters, 2018, v. 859, n. 2, article no. L20 | - |
dc.identifier.issn | 2041-8205 | - |
dc.identifier.uri | http://hdl.handle.net/10722/269662 | - |
dc.description.abstract | © 2018. The American Astronomical Society. All rights reserved. In the past few years wide-field optical and UV transient surveys and X-ray telescopes have allowed us to identify a few dozen candidate tidal disruption events (TDEs). While in theory the physical processes in TDEs are ubiquitous, a few distinct classes of TDEs have been observed. Some TDEs radiate mainly in NUV/optical, while others produce prominent X-rays. Moreover, relativistic jets have been observed in only a handful of TDEs. This diversity might be related to the details of the super-Eddington accretion and emission physics relevant to TDE disks. In this Letter, we utilize novel three-dimensional general relativistic radiation magnetohydrodynamics simulations to study the super-Eddington compact disk phase expected in TDEs. Consistent with previous studies, geometrically thick disks, wide-angle optically thick fast outflows, and relativistic jets are produced. The outflow density and velocity depend sensitively on the inclination angle, and hence so does the reprocessing of emission produced from the inner disk. We then use Monte Carlo radiative transfer to calculate the reprocessed spectra and find that that the observed ratio of optical to X-ray fluxes increases with increasing inclination angle. This naturally leads to a unified model for different classes of TDEs in which the spectral properties of the TDE depend mainly on the viewing angle of the observer with respect to the orientation of the disk. | - |
dc.language | eng | - |
dc.relation.ispartof | Astrophysical Journal Letters | - |
dc.subject | magnetohydrodynamics (MHD) | - |
dc.subject | radiative transfer | - |
dc.subject | quasars: supermassive black holes | - |
dc.subject | black hole physics | - |
dc.subject | accretion, accretion disks | - |
dc.title | A Unified Model for Tidal Disruption Events | - |
dc.type | Article | - |
dc.description.nature | link_to_subscribed_fulltext | - |
dc.identifier.doi | 10.3847/2041-8213/aab429 | - |
dc.identifier.scopus | eid_2-s2.0-85048294827 | - |
dc.identifier.volume | 859 | - |
dc.identifier.issue | 2 | - |
dc.identifier.spage | article no. L20 | - |
dc.identifier.epage | article no. L20 | - |
dc.identifier.eissn | 2041-8213 | - |
dc.identifier.isi | WOS:000433498900003 | - |
dc.identifier.issnl | 2041-8205 | - |