Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: "Failed" tidal disruption events and X-ray flares from the Galactic
  Center   The process of tidal disruption of stars by a supermassive black hole (SMBH)
provides luminous UV and soft X-ray flares with peak luminosities of $\approx
10^{46}$ ergs/sec and duration of a few months. As part of a wider exploration
of the effects of stellar rotation on the outcome of a TDE, we have performed
hydrodynamical simulations of the disruption of a rotating star whose spin axis
is opposite to the orbital axis. Such a retrograde rotation makes the star more
resilient to tidal disruption, so that, even if its orbit reaches the formal
tidal radius, it actually stays intact after the tidal encounter. However, the
outer layers of the star are initially stripped away from the core, but then
fall back onto the star itself, producing a newly formed accretion disc around
the star. We estimate that the accretion rate onto the star would be strongly
super-Eddington (for the star) and would result in an X-ray flare with
luminosity of the order of $\approx 10^{40}$ ergs/sec and duration of a few
months. We speculate that such events might be responsible for the known X-ray
flares from Sgr A* in the recent past.

14
The categories of this paper are: math-ph
8
The categories of this paper are: hep-ex
30
The categories of this paper are: q-alg
19
The categories of this paper are: eess
37
The categories of this paper are: supr-con
28
The categories of this paper are: alg-geom
7
The categories of this paper are: hep-th
9
The categories of this paper are: nlin
2
The categories of this paper are: math
1
The categories of this paper are: cs
21
The categories of this paper are: adap-org
0
The categories of this paper are: hep-ph
23
The categories of this paper are: solv-int
15
The categories of this paper are: nucl-ex
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The categories of this paper are: q-fin
4
The categories of this paper are: cond-mat