Astronomy and Astrophysics – Astrophysics
Scientific paper
2004-11-13
Astron.Lett. 30 (2004) 759-771
Astronomy and Astrophysics
Astrophysics
20 pages, 8 figures
Scientific paper
10.1134/1.1819494
We investigate the combined effect of neutron and proton superfluidities on the cooling of neutron stars whose cores consist of nucleons and electrons. We consider singlet-state pairing of protons and triplet-state pairing of neutrons in the cores of neutron stars. The critical superfluid temperatures T_c are assumed to depend on the density of matter. We study two types of neutron pairing with different components of the total angular momentum of Cooper pairs along the quantization axis (|m_J| =0 or 2). Our calculations are compared with observations of thermal emission from isolated neutron stars. We show that the observations can be interpreted by using two classes of superfluidity models: (1) strong proton superfluidity with a maximum critical temperature in the stellar core T_c^{max} > 4 \times 10^9 K and weak neutron superfluidity of any type (T_c^{max} < 2 \times 10^8 K); (2) strong neutron superfluidity (pairing with |m_J|=0) and weak proton superfluidity. The two types of models reflect an approximate symmetry with respect to an interchange of the critical temperatures of neutron and proton pairing.
Gnedin Oleg Yuri
Gusakov Mikhail E.
Kaminker A. D.
Yakovlev Dmitry G.
No associations
LandOfFree
Symmetry of the Neutron and Proton Superfluidity Effects in Cooling Neutron Stars does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Symmetry of the Neutron and Proton Superfluidity Effects in Cooling Neutron Stars, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Symmetry of the Neutron and Proton Superfluidity Effects in Cooling Neutron Stars will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-488829