Nucleon-nucleon bremsstrahlung of axions and pseudoscalar particles from neutron-star matter

被引：34
作者：
Iwamoto, N [1 ]
机构：
[1] Univ Toledo, Dept Phys & Astron, Toledo, OH 43606 USA
[2] Kagawa Univ, Fac Engn, Dept Adv Mat Sci, Kagawa 7610396, Japan
来源：
PHYSICAL REVIEW D | 2001年 / 64卷 / 04期
关键词：
D O I：
10.1103/PhysRevD.64.043002
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
The energy-loss rates of degenerate neutron-star matter due to thermal bremsstrahlung of pseudoscalar particles and axions via neutron-proton collisions together with the mean-free path and the energy spectrum from neutron-neutron, neutron-proton, and neutron-neutron processes are calculated. Analytic expressions for these quantities are obtained in the general case where the pseudoscalar particle couples to the proton and neutron with different strengths and the protons and the neutrons have different Fermi momenta. These rates are compared with those of other authors.
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