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

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

doi:10.1016/j.physletb.2018.01.084

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:

; Balantekin, A. Baha; Cheoun, Myung-Ki; Kajino, Toshitaka; Mathews, Grant J.

Publication Date:: 2018-04-01

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.

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                    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.  https://doi.org/10.1016/j.physletb.2018.01.084

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                    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.  https://doi.org/10.1016/j.physletb.2018.01.084.

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@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}

}

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Figures / Tables:

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 »

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Works referencing / citing this record:

Constraining axion-like-particles with hard X-ray emission from magnetars
journal, June 2018

Fortin, Jean-François; Sinha, Kuver
Journal of High Energy Physics, Vol. 2018, Issue 6
DOI: 10.1007/jhep06(2018)048

Figures / Tables found in this record:

Fig. 1. (p. 3)

Fig. 2. (p. 4)

Fig. 3. (p. 5)

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

Abstract

Citation Formats

Figures / Tables:

Constraining axion-like-particles with hard X-ray emission from magnetars journal, June 2018

Constraining axion-like-particles with hard X-ray emission from magnetars
journal, June 2018