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Asymmetric neutrino reaction and pulsar kick in magnetized proto-neutron stars in fully relativistic framework

  • Tomoyuki Maruyama*
  • , Toshitaka Kajino
  • , Nobutoshi Yasutake
  • , Myung Ki Cheoun
  • , Chung Yeol Ryu
  • *Corresponding author for this work
  • Nihon University
  • National Astronomical Observatory of Japan
  • The University of Tokyo
  • Soongsil University

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

We calculate neutrino scattering and absorption on the hot and dense neutron-star matter with hyperons under the strong magnetic field using a perturbative approach. We find that the absorption cross-sections show a remarkable angular dependence. Its strength is reduced in the direction parallel to the magnetic field and enhanced in the opposite direction. This asymmetric variation becomes maximally 2.2 of entire neutrino momentum when the magnetic field is assumed as about 2 × 10 17G. Since the pulsar kick after the supernova explosion may have relationships to this asymmetry, detailed discussions about the pulsar kick and the asymmetry are presented with the comparison to the observed kick velocities in a fully relativistic approach.

Original languageEnglish
Title of host publication19th Particles and Nuclei International Conference, PANIC11
Pages393-395
Number of pages3
DOIs
StatePublished - 2012
Externally publishedYes
Event19th Particles and Nuclei International Conference, PANIC11 - Cambridge, MA, United States
Duration: 24 Jul 201129 Jul 2011

Publication series

NameAIP Conference Proceedings
Volume1441
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Conference

Conference19th Particles and Nuclei International Conference, PANIC11
Country/TerritoryUnited States
CityCambridge, MA
Period24/07/1129/07/11

Keywords

  • Full Relativistic Approach
  • Proto-Neutron Star
  • Strong Magnetic Field

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