Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Circularization vs. Eccentrification in Intermediate Mass Ratio
  Inspirals inside Dark Matter Spikes   Inspirals of an Intermediate Mass Black Hole (IMBH) and a solar mass type
object will be observable by space based gravitational wave detectors such as
The Laser Interferometer Space Antenna (LISA). A dark matter overdensity around
an IMBH - a dark matter spike - can affect the orbital evolution of the system.
We consider here such Intermediate Mass Ratio Inspirals on eccentric orbits,
experiencing dynamical friction of the dark matter spike. We find that by
including the phase space distribution of the dark matter, the dynamical
friction tends to circularize the orbit, in contrast to previous inquiries. We
derive a general condition for circularization or eccentrification for any
given dissipative force. In addition to the dephasing, we suggest using the
circularization rate as another probe of the dark matter spike. Observing these
effects would be an indicator for the particle nature of dark matter.

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The categories of this paper are: adap-org
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The categories of this paper are: cs
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The categories of this paper are: comp-gas
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The categories of this paper are: quant-ph
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The categories of this paper are: econ
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The categories of this paper are: hep-ex
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The categories of this paper are: nucl-th
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The categories of this paper are: stat
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The categories of this paper are: nlin
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The categories of this paper are: mtrl-th
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The categories of this paper are: math
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The categories of this paper are: supr-con
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The categories of this paper are: acc-phys
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The categories of this paper are: q-alg
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The categories of this paper are: math-ph
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The categories of this paper are: plasm-ph