Astronomy and Astrophysics – Astrophysics
Scientific paper
2004-04-07
Astrophys.J. 615 (2004) 855-865
Astronomy and Astrophysics
Astrophysics
27 pages, 10 figures, accepted for publication in ApJ, additional hydrodynamic calculation on shock development for high tidal
Scientific paper
10.1086/424684
Gravitational waves and X-ray flares are expected from tidal disruption of stars by a massive black hole. Using a relativistic smoothed particle hydrodynamics code, we investigate the fate of main sequence and Helium stars in plunge orbits passing near Schwarzschild or a Kerr black holes of 10^5-6 Msun. We show that quadrupole gravitational waves emitted during the tidal disruption process are described reasonable well by a point particle approximation even in the strong encounter case. An additional hydrodynamic calculation based on the Godunov method indicates that shocks develop for sufficiently high tidal compressions. The shock-heating results in an X-ray flare, which for solar-type stars disrupted by 10^6Msun black holes is in the keV range, associated with the gravitational wave signal. The hardness and duration of the X-ray flare may serve as a diagnostic of the mass of the central black hole.
Kobayashi Shiho
Laguna Pablo
Meszaros Peter
Phinney Sterl E.
No associations
LandOfFree
Gravitational Wave and X-ray Signals from Stellar Disruption by a Massive Black Hole does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Gravitational Wave and X-ray Signals from Stellar Disruption by a Massive Black Hole, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Gravitational Wave and X-ray Signals from Stellar Disruption by a Massive Black Hole will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-158218