Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Gravitational Wave and X-ray Signals from Stellar Disruption by a
  Massive Black Hole   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.

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The categories of this paper are: q-alg
3
The categories of this paper are: physics
29
The categories of this paper are: funct-an
25
The categories of this paper are: patt-sol
33
The categories of this paper are: plasm-ph
12
The categories of this paper are: nucl-th
34
The categories of this paper are: chem-ph
37
The categories of this paper are: supr-con
20
The categories of this paper are: acc-phys
21
The categories of this paper are: adap-org
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The categories of this paper are: solv-int
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The categories of this paper are: alg-geom
32
The categories of this paper are: atom-ph
16
The categories of this paper are: stat
0
The categories of this paper are: hep-ph
14
The categories of this paper are: math-ph