Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: An eccentric binary blackhole in post-Newtonian theory   Gravitational waves radiated during binary black hole coalescence is a
perfect probe for studying the characteristics of strong gravity. Advanced
techniques for creating numerical relativity substitute models for eccentric
binary black hole systems are presumed to become more crucial in existing and
anticipated gravitational wave detectors. The imprint on the observation data
of the gravitational wave emitted by the binary coalescence enhances the two
body system studies. The aim of this study is to present an overview of the
change in characteristics behaviours of hierarchical massive astrophysical
objects merger, which are the data bank of the early universe. We present
results from numerical relativity simulations of equal-mass and unequal mass
nonspinning inspiral binary-black-hole system in the Post Newtonian framework.
We also consider the time evolution of eccentricity for the initial eccentric
system. The eccentric Post Newtonian equations are expanded in the form of
frequency related variable $x = (M \omega)^{2/3}$. The model is restricted to
the (2, 2) spin-weighted spherical harmonic modes. We conclude that for higher
eccentricity as well as mass ratio there exist higher oscillation in orbital
radius and in eccentricity.

1
The categories of this paper are: cs
19
The categories of this paper are: eess
3
The categories of this paper are: physics
36
The categories of this paper are: cmp-lg
18
The categories of this paper are: econ
6
The categories of this paper are: astro-ph
12
The categories of this paper are: nucl-th
35
The categories of this paper are: mtrl-th
28
The categories of this paper are: alg-geom
17
The categories of this paper are: q-fin
11
The categories of this paper are: hep-lat
15
The categories of this paper are: nucl-ex
0
The categories of this paper are: hep-ph
9
The categories of this paper are: nlin
16
The categories of this paper are: stat
26
The categories of this paper are: bayes-an