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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.

Authors:
ORCiD logo; ; ; ;
Publication Date:
Research Org.:
Univ. of Notre Dame, IN (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1437824
Alternate Identifier(s):
OSTI ID: 1499274
Grant/Contract Number:  
FG02-95-ER40934; FG02-95ER40934
Resource Type:
Published Article
Journal Name:
Physics Letters B
Additional Journal Information:
Journal Name: Physics Letters B Journal Volume: 779 Journal Issue: C; Journal ID: ISSN 0370-2693
Publisher:
Elsevier
Country of Publication:
Netherlands
Language:
English
Subject:
79 ASTRONOMY AND ASTROPHYSICS

Citation Formats

Maruyama, Tomoyuki, Balantekin, A. Baha, Cheoun, Myung-Ki, Kajino, Toshitaka, and Mathews, Grant J. Axion production from Landau quantization in the strong magnetic field of magnetars. Netherlands: N. p., 2018. Web. doi:10.1016/j.physletb.2018.01.084.
Maruyama, Tomoyuki, Balantekin, A. Baha, Cheoun, Myung-Ki, Kajino, Toshitaka, & Mathews, Grant J. Axion production from Landau quantization in the strong magnetic field of magnetars. Netherlands. doi:10.1016/j.physletb.2018.01.084.
Maruyama, Tomoyuki, Balantekin, A. Baha, Cheoun, Myung-Ki, Kajino, Toshitaka, and Mathews, Grant J. Sun . "Axion production from Landau quantization in the strong magnetic field of magnetars". Netherlands. doi:10.1016/j.physletb.2018.01.084.
@article{osti_1437824,
title = {Axion production from Landau quantization in the strong magnetic field of magnetars},
author = {Maruyama, Tomoyuki and Balantekin, A. Baha and Cheoun, Myung-Ki and Kajino, Toshitaka and Mathews, Grant J.},
abstractNote = {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.},
doi = {10.1016/j.physletb.2018.01.084},
journal = {Physics Letters B},
number = C,
volume = 779,
place = {Netherlands},
year = {2018},
month = {4}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
DOI: 10.1016/j.physletb.2018.01.084

Citation Metrics:
Cited by: 2 works
Citation information provided by
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Figures / Tables:

Fig. 1. Fig. 1. : (Color online.) Axion luminosity per nucleon versus temperature at baryon densities $ρ$$B$ = 0.1$ρ$0 (a) $ρ$$B$ = 0.5$ρ$0 (b), $ρ$$B$ = $ρ$0 (c) and $ρ$$B$ = 2$ρ$0 (d) for $B$ = 1015 G. The solid and dot-dashed lines represent the results for protons with and without themore » AMM, respectively. The long-dashed line indicates the results for electrons. The dashed and dotted lines indicate the neutrino luminosities from the MU and DU processes, respectively.« less

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Figures/Tables have been extracted from DOE-funded journal article accepted manuscripts.