Relativistic mean-field treatment of pulsar kicks from neutrino propagation in magnetized proto-neutron stars
- Authors
- Maruyama, Tomoyuki; Yasutake, Nobutoshi; Cheoun, Myung-Ki; Hidaka, Jun; Kajino, Toshitaka; Mathews, Grant J.; Ryu, Chung-Yeol
- Issue Date
- 4-Dec-2012
- Publisher
- AMER PHYSICAL SOC
- Citation
- PHYSICAL REVIEW D, v.86, no.12
- Journal Title
- PHYSICAL REVIEW D
- Volume
- 86
- Number
- 12
- URI
- http://scholarworks.bwise.kr/ssu/handle/2018.sw.ssu/12302
- DOI
- 10.1103/PhysRevD.86.123003
- ISSN
- 1550-7998
- Abstract
- We make a perturbative calculation of neutrino scattering and absorption in hot and dense hyperonic neutron-star matter in the presence of a strong magnetic field. We calculate that the absorption cross-sections in a fully relativistic mean-field theory. We find that there is a remarkable angular dependence, i.e., the neutrino absorption strength is reduced in a direction parallel to the magnetic field and enhanced in the opposite direction. This asymmetry in the neutrino absorption is estimated to be as much as 2.2% of the entire neutrino momentum for an interior magnetic field of similar to 2 x 10(17) G. The pulsar kick velocities associated with this asymmetry are shown to be comparable to observed velocities.
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