Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Neutron Stars Harboring a Primordial Black Hole: Maximum Survival Time   We explore in general relativity the survival time of neutron stars that host
an endoparasitic, possibly primordial, black hole at their center.
Corresponding to the minimum steady-state Bondi accretion rate for adiabatic
flow that we found earlier for stiff nuclear equations of state (EOSs), we
derive analytically the maximum survival time after which the entire star will
be consumed by the black hole. We also show that this maximum survival time
depends only weakly on the stiffness for polytropic EOSs with $\Gamma \geq
5/3$, so that this survival time assumes a nearly universal value that depends
on the initial black hole mass alone. Establishing such a value is important
for constraining the contribution of primordial black holes in the mass range
$10^{-16} M_\odot \lesssim M \lesssim 10^{-10} M_\odot$ to the dark-matter
content of the Universe.

23
The categories of this paper are: solv-int
32
The categories of this paper are: atom-ph
28
The categories of this paper are: alg-geom
4
The categories of this paper are: cond-mat
15
The categories of this paper are: nucl-ex
34
The categories of this paper are: chem-ph
12
The categories of this paper are: nucl-th
24
The categories of this paper are: dg-ga
35
The categories of this paper are: mtrl-th
36
The categories of this paper are: cmp-lg
30
The categories of this paper are: q-alg
10
The categories of this paper are: q-bio
37
The categories of this paper are: supr-con
21
The categories of this paper are: adap-org
25
The categories of this paper are: patt-sol
19
The categories of this paper are: eess