Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Crust-core transition of a neutron star: effects of the symmetry energy
  and temperature under strong magnetic fields   We study the simultaneous effects of the symmetry energy and temperature on
the crust-core transition of a magnetar. The dynamical and the thermodynamical
spinodals are used to calculate the transition region within a relativistic
mean-field approach for the equation of state. Quantizing magnetic fields with
intensities in the range of $ 2\times 10^{15}<B<5\times 10 ^{16}$G are
considered. Under these strong magnetic fields, the crust extension is very
sensitive to the density dependence of the symmetry energy, and the properties
that depend on the crust thickness could set a constraint on the equation of
state. It is shown that the effect on the extension of the crust-core
transition is washed out for temperatures above $10^{9}$ K. However, for
temperatures below that value, a noticeable effect exists that grows as the
temperature decreases and which should be taken into account when the evolution
of magnetars is studied.

13
The categories of this paper are: quant-ph
5
The categories of this paper are: gr-qc
3
The categories of this paper are: physics
21
The categories of this paper are: adap-org
12
The categories of this paper are: nucl-th
20
The categories of this paper are: acc-phys
30
The categories of this paper are: q-alg
2
The categories of this paper are: math
29
The categories of this paper are: funct-an
7
The categories of this paper are: hep-th
32
The categories of this paper are: atom-ph
31
The categories of this paper are: ao-sci
37
The categories of this paper are: supr-con
0
The categories of this paper are: hep-ph
10
The categories of this paper are: q-bio
15
The categories of this paper are: nucl-ex