arXiv:1009.0976·v2·Nuclear Theory
Asymmetric Neutrino Emission from Magnetized Proto-Neutron Star Matter including Hyperons in Relativistic Mean Field Theory
Tomoyuki Maruyama · Toshitaka Kajino · Nobutoshi Yasutake · Myung-Ki Cheoun · Chung-Yeol Ryu
Abstract
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 fielld, B. 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.
Comments: 9 pages, 3 figure