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丸山 智幸*; Baha Balantekin, A.*; Cheoun, M.-K.*; 梶野 敏貴*; 日下部 元彦*; Mathews, G. J.*
Physics Letters B, 824, p.136813_1 - 136813_8, 2022/01
被引用回数:2 パーセンタイル:49.92(Astronomy & Astrophysics)We study neutrino and antineutrino emission from the direct Urca process in neutron-star matter in the presence of strong magnetic fields. We calculate the neutrino emissivity of the direct Urca process, whereby a neutron converts to a proton, an electron and an antineutrino, or a proton-electron pair converts to a neutron-neutrino pair. We solve exact wave functions for protons and electrons in the states described with Landau levels. We find that the direct Urca process can satisfy the kinematic constraints even in density regions where this process could not normally occur in the absence of a magnetic field.