Asymmetric neutrino reaction in magnetized proto-neutron stars in fully relativistic approach

Tomoyuki Maruyama; Toshitaka Kajino; Nobutoshi Yasutake; Myung Ki Cheoun; Chung Yeol Ryu

doi:10.1051/epjconf/20122004003

Asymmetric neutrino reaction in magnetized proto-neutron stars in fully relativistic approach

Tomoyuki Maruyama^*
, Toshitaka Kajino
, Nobutoshi Yasutake
, Myung Ki Cheoun
, Chung Yeol Ryu

^*此作品的通讯作者

Nihon University
National Astronomical Observatory of Japan
The University of Tokyo
Soongsil University

科研成果: 期刊稿件 › 会议文章 › 同行评审

摘要

We calculate asymmetric neutrino absorption and scattering cross sections on hot and dense magnetized neutron-star matter including hyperons in fully relativistic mean-?eld theory. The absorption/scattering cross sections are suppressed/enhanced incoherently in the direction of the magnetic ?eld B = Bz?. The asymmetry is 2-4% at the matter density ?0 = ? B = 3?0 and temperature T = 40MeV for B = 2 1017G. Then we solve the Boltzmann equation for the neutrino transport in 1D attenuation approximation, and get the result that the kick velocity becomes about 300 km/s for the proto-neutron star with 168 solar mass at T = 20MeV.

源语言	英语
文章编号	04003
期刊	EPJ Web of Conferences
卷	20
DOI	https://doi.org/10.1051/epjconf/20122004003
出版状态	已出版 - 2012
已对外发布	是
活动	Hadron Nuclear Physics 2011: Quarks in Hadrons, Nuclei, and Hadronic Matter, HNP 2011 - Pohang, 韩国期限: 21 2月 2011 → 24 2月 2011

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title = "Asymmetric neutrino reaction in magnetized proto-neutron stars in fully relativistic approach",

abstract = "We calculate asymmetric neutrino absorption and scattering cross sections on hot and dense magnetized neutron-star matter including hyperons in fully relativistic mean-?eld theory. The absorption/scattering cross sections are suppressed/enhanced incoherently in the direction of the magnetic ?eld B = Bz?. The asymmetry is 2-4\% at the matter density ?0 = ? B = 3?0 and temperature T = 40MeV for B = 2 1017G. Then we solve the Boltzmann equation for the neutrino transport in 1D attenuation approximation, and get the result that the kick velocity becomes about 300 km/s for the proto-neutron star with 168 solar mass at T = 20MeV.",

author = "Tomoyuki Maruyama and Toshitaka Kajino and Nobutoshi Yasutake and Cheoun, \{Myung Ki\} and Ryu, \{Chung Yeol\}",

year = "2012",

doi = "10.1051/epjconf/20122004003",

language = "英语",

volume = "20",

journal = "EPJ Web of Conferences",

issn = "2101-6275",

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note = "Hadron Nuclear Physics 2011: Quarks in Hadrons, Nuclei, and Hadronic Matter, HNP 2011 ; Conference date: 21-02-2011 Through 24-02-2011",

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TY - JOUR

T1 - Asymmetric neutrino reaction in magnetized proto-neutron stars in fully relativistic approach

AU - Maruyama, Tomoyuki

AU - Kajino, Toshitaka

AU - Yasutake, Nobutoshi

AU - Cheoun, Myung Ki

AU - Ryu, Chung Yeol

PY - 2012

Y1 - 2012

N2 - We calculate asymmetric neutrino absorption and scattering cross sections on hot and dense magnetized neutron-star matter including hyperons in fully relativistic mean-?eld theory. The absorption/scattering cross sections are suppressed/enhanced incoherently in the direction of the magnetic ?eld B = Bz?. The asymmetry is 2-4% at the matter density ?0 = ? B = 3?0 and temperature T = 40MeV for B = 2 1017G. Then we solve the Boltzmann equation for the neutrino transport in 1D attenuation approximation, and get the result that the kick velocity becomes about 300 km/s for the proto-neutron star with 168 solar mass at T = 20MeV.

AB - We calculate asymmetric neutrino absorption and scattering cross sections on hot and dense magnetized neutron-star matter including hyperons in fully relativistic mean-?eld theory. The absorption/scattering cross sections are suppressed/enhanced incoherently in the direction of the magnetic ?eld B = Bz?. The asymmetry is 2-4% at the matter density ?0 = ? B = 3?0 and temperature T = 40MeV for B = 2 1017G. Then we solve the Boltzmann equation for the neutrino transport in 1D attenuation approximation, and get the result that the kick velocity becomes about 300 km/s for the proto-neutron star with 168 solar mass at T = 20MeV.

UR - https://www.scopus.com/pages/publications/84873453890

U2 - 10.1051/epjconf/20122004003

DO - 10.1051/epjconf/20122004003

M3 - 会议文章

AN - SCOPUS:84873453890

SN - 2101-6275

VL - 20

JO - EPJ Web of Conferences

JF - EPJ Web of Conferences

M1 - 04003

T2 - Hadron Nuclear Physics 2011: Quarks in Hadrons, Nuclei, and Hadronic Matter, HNP 2011

Y2 - 21 February 2011 through 24 February 2011

ER -

Asymmetric neutrino reaction in magnetized proto-neutron stars in fully relativistic approach

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