Issue |
A&A
Volume 389, Number 2, July II 2002
|
|
---|---|---|
Page(s) | 702 - 715 | |
Section | Astronomical instrumentation | |
DOI | https://doi.org/10.1051/0004-6361:20020602 | |
Published online | 27 June 2002 |
Neutrino emission from superfluid neutron-star cores: Various types of neutron pairing
Ioffe Physical Technical Institute, Politekhnicheskaya 26, 194021 St. Petersburg, Russia
Corresponding author: gusakov@astro.ioffe.rssi.ru
Received:
12
March
2002
Accepted:
16
April
2002
We calculate and provide analytic fits of
the factors which describe the reduction of
the neutrino emissivity of modified Urca
and nucleon-nucleon bremsstrahlung processes
by superfluidity of neutrons and protons in neutron-star cores.
We consider 1S0 pairing of protons and
either 1S0
or 3P2 pairing of neutrons. We analyze two types of
3P2 pairing: the familiar pairing
with zero projection
of the total angular momentum of neutron pairs
onto quantization axis, ; and the pairing
with
which leads to the gap with
nodes at the neutron Fermi surface.
Combining the new data with those available
in the literature we fully describe
neutrino emission by nucleons from neutron
star cores to be used
in simulations of cooling of superfluid neutron stars.
Key words: stars: neutron / dense matter
© ESO, 2002
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