Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Simulated magnetic field expulsion in neutron star cores   The study of long-term evolution of neutron star (NS) magnetic fields is key
to understanding the rich diversity of NS observations, and to unifying their
nature despite the different emission mechanisms and observed properties. Such
studies in principle permit a deeper understanding of the most important
parameters driving their apparent variety, e.g. radio pulsars, magnetars, x-ray
dim isolated neutron stars, gamma-ray pulsars. We describe, for the first time,
the results from self-consistent magneto-thermal simulations considering not
only the effects of the Hall-driven field dissipation in the crust, but adding
a complete set of proposed driving forces in a superconducting core. We
emphasize how each of these core-field processes drive magnetic evolution and
affect observables, and show that when all forces are considered together in
vectorial form, the net expulsion of core magnetic flux is negligible, and will
have no observable effect in the crust (consequently in the observed surface
emission) on megayear time-scales. Our new simulations suggest that strong
magnetic fields in NS cores (and the signatures on the NS surface) will persist
long after the crustal magnetic field has evolved and decayed, due to the weak
combined effects of dissipation and expulsion in the stellar core.

9
The categories of this paper are: nlin
12
The categories of this paper are: nucl-th
21
The categories of this paper are: adap-org
7
The categories of this paper are: hep-th
15
The categories of this paper are: nucl-ex
31
The categories of this paper are: ao-sci
16
The categories of this paper are: stat
8
The categories of this paper are: hep-ex
13
The categories of this paper are: quant-ph
33
The categories of this paper are: plasm-ph
17
The categories of this paper are: q-fin
4
The categories of this paper are: cond-mat
29
The categories of this paper are: funct-an
27
The categories of this paper are: comp-gas
3
The categories of this paper are: physics
36
The categories of this paper are: cmp-lg