Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A relativistic model for Strange Quark Star   We propose a spherically symmetric and anisotropic model for strange quark
stars within the framework of MIT Bag model. Though the model is found to
comply with all the physical requirements of a realistic star satisfying a
strange matter equation of state (EOS), the estimated values the Bag constant
for different strange star candidates like Her X-1, SAX J 1808.4-3658 and 4U
1820-30, clearly indicate that the Bag constant need not necessarily lie within
the range of 60-80 MeV fm$^{-3}$ as claimed in the literature.

26
The categories of this paper are: bayes-an
34
The categories of this paper are: chem-ph
3
The categories of this paper are: physics
0
The categories of this paper are: hep-ph
35
The categories of this paper are: mtrl-th
17
The categories of this paper are: q-fin
11
The categories of this paper are: hep-lat
10
The categories of this paper are: q-bio
21
The categories of this paper are: adap-org
14
The categories of this paper are: math-ph
13
The categories of this paper are: quant-ph
23
The categories of this paper are: solv-int
1
The categories of this paper are: cs
2
The categories of this paper are: math
22
The categories of this paper are: chao-dyn
18
The categories of this paper are: econ