Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Analysis of Charged Compact Stars in Modified Gravity   Current study highlights the physical characteristics of charged anisotropic
compact stars by exploring some exact solutions of modified field equations in
$f(R,G)$ gravity. A comprehensive analysis is performed from the obtained
solutions regarding stability, energy conditions, regularity, sound velocity
and compactness. These solutions can be referred to model the compact celestial
entities. In particular, a compact star named, $Her X-1$ has been modeled which
indicates that current solution fits and is in conformity to the observational
data as well. A useful and interesting fact from this model arises that
relative difference between two forces of anisotropic pressure and
electromagnetic force may occur inside the aforementioned compact star. This is
another mechanism which is essential for stability of the compact object and
prevent stellar object to annihilate.

27
The categories of this paper are: comp-gas
25
The categories of this paper are: patt-sol
6
The categories of this paper are: astro-ph
31
The categories of this paper are: ao-sci
26
The categories of this paper are: bayes-an
15
The categories of this paper are: nucl-ex
2
The categories of this paper are: math
1
The categories of this paper are: cs
35
The categories of this paper are: mtrl-th
22
The categories of this paper are: chao-dyn
23
The categories of this paper are: solv-int
4
The categories of this paper are: cond-mat
8
The categories of this paper are: hep-ex
11
The categories of this paper are: hep-lat
10
The categories of this paper are: q-bio
12
The categories of this paper are: nucl-th