Axion production from Landau quantization in the strong magnetic field of magnetars

Tomoyuki Maruyama; A. Baha Balantekin; Myung Ki Cheoun; Toshitaka Kajino; Grant J. Mathews

doi:10.1016/j.physletb.2018.01.084

Axion production from Landau quantization in the strong magnetic field of magnetars

Tomoyuki Maruyama^*
, A. Baha Balantekin
, Myung Ki Cheoun
, Toshitaka Kajino
, Grant J. Mathews

^*Corresponding author for this work

School of Physics

College of Bioresource Sciences
Nihon University
National Astronomical Observatory of Japan
University of Wisconsin-Madison
Department of Physics
Soongsil University
The University of Tokyo
Department of Physics
University of Notre Dame

Research output: Contribution to journal › Article › peer-review

14 Scopus citations

Abstract

We utilize an exact quantum calculation to explore axion emission from electrons and protons in the presence of the strong magnetic field of magnetars. The axion is emitted via transitions between the Landau levels generated by the strong magnetic field. The luminosity of axions emitted by protons is shown to be much larger than that of electrons and becomes stronger with increasing matter density. Cooling by axion emission is shown to be much larger than neutrino cooling by the Urca processes. Consequently, axion emission in the crust may significantly contribute to the cooling of magnetars. In the high-density core, however, it may cause heating of the magnetar.

Original language	English
Pages (from-to)	160-165
Number of pages	6
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	779
DOIs	https://doi.org/10.1016/j.physletb.2018.01.084
State	Published - 10 Apr 2018

Keywords

Axion production
Landau level
Quantum approach
Strong magnetic field

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10.1016/j.physletb.2018.01.084

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title = "Axion production from Landau quantization in the strong magnetic field of magnetars",

abstract = "We utilize an exact quantum calculation to explore axion emission from electrons and protons in the presence of the strong magnetic field of magnetars. The axion is emitted via transitions between the Landau levels generated by the strong magnetic field. The luminosity of axions emitted by protons is shown to be much larger than that of electrons and becomes stronger with increasing matter density. Cooling by axion emission is shown to be much larger than neutrino cooling by the Urca processes. Consequently, axion emission in the crust may significantly contribute to the cooling of magnetars. In the high-density core, however, it may cause heating of the magnetar.",

keywords = "Axion production, Landau level, Quantum approach, Strong magnetic field",

author = "Tomoyuki Maruyama and Balantekin, \{A. Baha\} and Cheoun, \{Myung Ki\} and Toshitaka Kajino and Mathews, \{Grant J.\}",

note = "Publisher Copyright: {\textcopyright} 2018 The Authors",

year = "2018",

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doi = "10.1016/j.physletb.2018.01.084",

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TY - JOUR

T1 - Axion production from Landau quantization in the strong magnetic field of magnetars

AU - Maruyama, Tomoyuki

AU - Balantekin, A. Baha

AU - Cheoun, Myung Ki

AU - Kajino, Toshitaka

AU - Mathews, Grant J.

PY - 2018/4/10

Y1 - 2018/4/10

N2 - We utilize an exact quantum calculation to explore axion emission from electrons and protons in the presence of the strong magnetic field of magnetars. The axion is emitted via transitions between the Landau levels generated by the strong magnetic field. The luminosity of axions emitted by protons is shown to be much larger than that of electrons and becomes stronger with increasing matter density. Cooling by axion emission is shown to be much larger than neutrino cooling by the Urca processes. Consequently, axion emission in the crust may significantly contribute to the cooling of magnetars. In the high-density core, however, it may cause heating of the magnetar.

AB - We utilize an exact quantum calculation to explore axion emission from electrons and protons in the presence of the strong magnetic field of magnetars. The axion is emitted via transitions between the Landau levels generated by the strong magnetic field. The luminosity of axions emitted by protons is shown to be much larger than that of electrons and becomes stronger with increasing matter density. Cooling by axion emission is shown to be much larger than neutrino cooling by the Urca processes. Consequently, axion emission in the crust may significantly contribute to the cooling of magnetars. In the high-density core, however, it may cause heating of the magnetar.

KW - Axion production

KW - Landau level

KW - Quantum approach

KW - Strong magnetic field

UR - https://www.scopus.com/pages/publications/85044346568

U2 - 10.1016/j.physletb.2018.01.084

DO - 10.1016/j.physletb.2018.01.084

M3 - 文章

AN - SCOPUS:85044346568

SN - 0370-2693

VL - 779

SP - 160

EP - 165

JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

ER -

Axion production from Landau quantization in the strong magnetic field of magnetars

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Keywords

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