Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Evidences of an innermost stable bound orbit predicted by general
  relativity from the amplitude of the twin-peak quasi-periodic oscillations   The twin-peak high-frequency quasi-periodic oscillations (HF QPOs), observed
in the power spectra of low-mass X-ray binaries, might carry relevant clues
about the physics laws reigning close to a compact object. Their frequencies
are typical of the orbital motion time-scales a few gravitational radii away
from the compact object. The aim of the manuscript is to propose an intuitive
model explaining that the energy carried by the lower HF QPO can be related to
differences of potential energy released by clumps of plasma spiraling in a
curved space-time. Our model provides estimates on both the size of clumps of
matter that can survive to the strong tidal force and energy loaded by tides on
the clump. We also have obtained some constraints on the mechanical properties
of the plasma orbiting into the accretion disk. We note that the systematic
behavior of the emitted energy as function of the central frequency of the
lower HF QPO, observed in several sources with a neutron star, might give clues
related to an innermost stable bound orbit predicted by the General Relativity
theory in strong field regime.

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The categories of this paper are: chem-ph
8
The categories of this paper are: hep-ex
24
The categories of this paper are: dg-ga
31
The categories of this paper are: ao-sci
4
The categories of this paper are: cond-mat
5
The categories of this paper are: gr-qc
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The categories of this paper are: cmp-lg
7
The categories of this paper are: hep-th
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The categories of this paper are: q-fin
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The categories of this paper are: chao-dyn
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The categories of this paper are: supr-con
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The categories of this paper are: math
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The categories of this paper are: q-alg
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The categories of this paper are: acc-phys
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The categories of this paper are: comp-gas
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The categories of this paper are: adap-org