Asymmetric neutrino emission from magnetized proto-neutron star matter including hyperons in relativistic mean field theory

作者：Maruyama Tomoyuki^*; Kajino Toshitaka; Yasutake Nobutoshi; Cheoun Myung Ki; Ryu Chung Yeol

来源：Physical Review D - Particles, Fields, Gravitation and Cosmology, 2011, 83(8): 081303.

DOI：10.1103/PhysRevD.83.081303

We calculate asymmetric neutrino absorption and scattering cross sections on hot and dense magnetized neutron star matter, including hyperons in fully relativistic mean-field theory. The absorption/scattering cross sections are suppressed/enhanced incoherently in the direction of the magnetic field B = B (z) over cap. The asymmetry is 2-4% at the matter density rho(0) <= rho(B) <= 3 rho(0) and temperature T <= 40 MeV for B = 2 x 10(17) G. This asymmetry is comparable to the effects owing to parity violation or asymmetric magnetic field topology proposed for the origin of pulsar kicks.

• 出版日期2011-4-19
• 单位中国科学院国家天文台