Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Regular Kiselev black hole with a de Sitter core   We present some new aspects of Kiselev black hole and then study the null and
timelike thin shell collapse in this spacetime. For the latter, we show that
Kiselev black hole can be matched to de Sitter core with a thin timelike dust
shell to produce a non-singular black hole space-time. It is argued that for
timelike hypersurface, the equation of state parameter must be non-negative.
Using Barrabes-Israel junction conditions, the equation of motion of the shell
is obtained. The stability of stationary solutions of the shell is discussed
and some appropriate ranges for the parameters of shell and Kiselev geometry
are found for which a stable stationary black hole is constructed.

28
The categories of this paper are: alg-geom
6
The categories of this paper are: astro-ph
4
The categories of this paper are: cond-mat
17
The categories of this paper are: q-fin
7
The categories of this paper are: hep-th
35
The categories of this paper are: mtrl-th
29
The categories of this paper are: funct-an
2
The categories of this paper are: math
14
The categories of this paper are: math-ph
19
The categories of this paper are: eess
23
The categories of this paper are: solv-int
32
The categories of this paper are: atom-ph
16
The categories of this paper are: stat
8
The categories of this paper are: hep-ex
31
The categories of this paper are: ao-sci
34
The categories of this paper are: chem-ph