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Conference Paper: Accretion Disks, Winds & Jets in Tidal Disruption Events
| Title | Accretion Disks, Winds & Jets in Tidal Disruption Events |
|---|---|
| Authors | |
| Issue Date | 2019 |
| Publisher | Institute of Astronomy, University of Cambridge. |
| Citation | Institute of Astronomy Colloquia, University of Cambridge, Cambridge, UK, 21 November 2019 How to Cite? |
| Abstract | The tidal disruption of a star by a supermassive black hole provides a unique opportunity for us to study accretion physics around black holes. During a tidal disruption event (TDE), the rate of stellar debris supplied to the black hole can vary from two orders above the Eddington accretion rate to sub-Eddington within a year. This allows us to use TDEs to study super-Eddington accretion disk physics, as well as to probe the transition between the super-Eddington thick disk regime and the thin disk regime. In this talk, I will present our latest general-relativistic radiation magnetohydrodynamic simulations of super-Eddington accretion disks, and show how we can use these results to understand the evolution of disks, winds, jets and emissions in TDEs. I will also talk about our theoretical modeling of X-ray reflection from these simulated super-Eddington accretion disks. |
| Persistent Identifier | http://hdl.handle.net/10722/299655 |
| DC Field | Value | Language |
|---|---|---|
| dc.contributor.author | Dai, L | - |
| dc.date.accessioned | 2021-05-24T04:05:15Z | - |
| dc.date.available | 2021-05-24T04:05:15Z | - |
| dc.date.issued | 2019 | - |
| dc.identifier.citation | Institute of Astronomy Colloquia, University of Cambridge, Cambridge, UK, 21 November 2019 | - |
| dc.identifier.uri | http://hdl.handle.net/10722/299655 | - |
| dc.description.abstract | The tidal disruption of a star by a supermassive black hole provides a unique opportunity for us to study accretion physics around black holes. During a tidal disruption event (TDE), the rate of stellar debris supplied to the black hole can vary from two orders above the Eddington accretion rate to sub-Eddington within a year. This allows us to use TDEs to study super-Eddington accretion disk physics, as well as to probe the transition between the super-Eddington thick disk regime and the thin disk regime. In this talk, I will present our latest general-relativistic radiation magnetohydrodynamic simulations of super-Eddington accretion disks, and show how we can use these results to understand the evolution of disks, winds, jets and emissions in TDEs. I will also talk about our theoretical modeling of X-ray reflection from these simulated super-Eddington accretion disks. | - |
| dc.language | eng | - |
| dc.publisher | Institute of Astronomy, University of Cambridge. | - |
| dc.relation.ispartof | University of Cambridge, Institute of Astronomy Colloquia | - |
| dc.title | Accretion Disks, Winds & Jets in Tidal Disruption Events | - |
| dc.type | Conference_Paper | - |
| dc.identifier.email | Dai, L: lixindai@hku.hk | - |
| dc.identifier.authority | Dai, L=rp02540 | - |
| dc.identifier.hkuros | 310454 | - |
| dc.publisher.place | Cambridge, UK | - |