2004A&A...421.1143G


Query : 2004A&A...421.1143G

2004A&A...421.1143G - Astronomy and Astrophysics, volume 421, 1143-1148 (2004/7-3)

Direct Urca process in a neutron star mantle.

GUSAKOV M.E., YAKOVLEV D.G., HAENSEL P. and GNEDIN O.Y.

Abstract (from CDS):

We show that the direct Urca process of neutrino emission is allowed in two possible phases of nonspherical nuclei (inverse cylinders and inverse spheres) in the mantle of a neutron star near the crust-core interface. The process is open because neutrons and protons move in a periodic potential created by inhomogeneous nuclear structures. In this way the nucleons acquire large quasimomenta needed to satisfy momentum-conservation in the neutrino reaction. The appropriate neutrino emissivity in a nonsuperfluid matter is about 2-3 orders of magnitude higher than the emissivity of the modified Urca process in the stellar core. The process may noticeably accelerate the cooling of low-mass neutron stars.

Abstract Copyright:

Journal keyword(s): stars: neutron - dense matter

Simbad objects: 3

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Number of rows : 3
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2022
#notes
1 PSR J0821-4300 Psr 08 21 58.2 -43 00 22           ~ 119 2
2 NAME Pup A SNR 08 24 07 -42 59.8           ~ 553 1
3 PSR B1055-52 Psr 10 57 59.0450 -52 26 56.330           ~ 697 0

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2022.05.24-11:51:04

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