Abstract
We investigate the collapse of differentially rotating supermassive stars by means of 3+1 hydrodynamic simulations in general relativity. We particularly focus on the formation of a rapidly rotating dynamic black hole, and find the following two features. Firstly, quasi-periodic gravitational waves continue to be emitted after the quasi-normal mode frequency has decayed. Secondly, when the newly formed black hole is almost extreme Kerr, the amplitude of the quasi-periodic oscillation is enhanced during the late stages of the evolution. Geometrical features, shock waves, and instabilities of the fluid are suggested as a cause of this amplification behaviour. This alternative scenario for the collapse of differentially rotating supermassive stars might be observable by LISA.
| Original language | English |
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| Title of host publication | 12th Marcel Grossmann Meeting on Recent Dev. in Theoretical and Experimental General Relativity, Astrophysics and Relativistic Field Theories - Proc. of the MG 2009 Meeting on General Relativity |
| Pages | 801-803 |
| Number of pages | 3 |
| Publication status | Published - 2012 |
| Externally published | Yes |
| Event | 12th Marcel Grossmann Meeting on Recent Developments in Theoretical and Experimental General Relativity, Astrophysics and Relativistic Field Theories, MG 2009 - Paris Duration: 2009 Jul 12 → 2009 Jul 18 |
Other
| Other | 12th Marcel Grossmann Meeting on Recent Developments in Theoretical and Experimental General Relativity, Astrophysics and Relativistic Field Theories, MG 2009 |
|---|---|
| City | Paris |
| Period | 09/7/12 → 09/7/18 |
Keywords
- Dynamic black hole
- Gravitational collapse
- Gravitational waves
- Numerical relativity
- Relativistic hydrodynamics
- Rotating supermassive stars
ASJC Scopus subject areas
- Astronomy and Astrophysics
- Nuclear and High Energy Physics