Friday, February 22, 2013

1009.0976 (Tomoyuki Maruyama et al.)

Asymmetric Neutrino Emission from Magnetized Proto-Neutron Star Matter
including Hyperons in Relativistic Mean Field Theory
   [PDF]

Tomoyuki Maruyama, Toshitaka Kajino, Nobutoshi Yasutake, Myung-Ki Cheoun, Chung-Yeol Ryu
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.
View original: http://arxiv.org/abs/1009.0976

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