Recombination era magnetic fields from axion dark matter

Banik, Nilanjan; Christopherson, Adam J.

doi:10.1103/PhysRevD.93.043003

Title: Recombination era magnetic fields from axion dark matter

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Abstract

We introduce a new mechanism for generating magnetic fields in the recombination era. This Harrison-like mechanism utilizes vorticity in baryons that is sourced through the Bose-Einstein condensate of axions via gravitational interactions. The magnetic fields generated are on galactic scales ~10 kpc and have a magnitude of the order of B~10^–23G today. Lastly, the field has a greater magnitude than those generated from other mechanisms relying on second-order perturbation theory, and is sufficient to provide a seed for battery mechanisms.

Authors:

Banik, Nilanjan ^[1]; Christopherson, Adam J. ^[2]

Univ. of Florida, Gainesville, FL (United States); Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Univ. of Florida, Gainesville, FL (United States)

Publication Date:: Thu Feb 04 00:00:00 EST 2016

Research Org.:: Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)

Sponsoring Org.:: USDOE Office of Science (SC), High Energy Physics (HEP)

OSTI Identifier:: 1247497

Alternate Identifier(s):: OSTI ID: 1236983

Report Number(s):: FERMILAB-PUB-15-570-A-AE-PPD-T; arXiv:1507.03001
Journal ID: ISSN 2470-0010; PRVDAQ; 1382330

Grant/Contract Number:: AC02-07CH11359; FG02-97ER41029

Resource Type:: Accepted Manuscript

Journal Name:: Physical Review D

Additional Journal Information:: Journal Volume: 93; Journal Issue: 4; Journal ID: ISSN 2470-0010

Publisher:: American Physical Society (APS)

Country of Publication:: United States

Language:: English

Subject:: 79 ASTRONOMY AND ASTROPHYSICS; 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS

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                    Banik, Nilanjan, and Christopherson, Adam J. Recombination era magnetic fields from axion dark matter.  United States: N. p., 2016. 
Web.  doi:10.1103/PhysRevD.93.043003.

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                    Banik, Nilanjan, & Christopherson, Adam J. Recombination era magnetic fields from axion dark matter.  United States.  https://doi.org/10.1103/PhysRevD.93.043003

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                    Banik, Nilanjan, and Christopherson, Adam J. Thu .  
"Recombination era magnetic fields from axion dark matter".  United States.  https://doi.org/10.1103/PhysRevD.93.043003.  https://www.osti.gov/servlets/purl/1247497.

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@article{osti_1247497,

  title        = {Recombination era magnetic fields from axion dark matter},

  author       = {Banik, Nilanjan and Christopherson, Adam J.},

  abstractNote = {We introduce a new mechanism for generating magnetic fields in the recombination era. This Harrison-like mechanism utilizes vorticity in baryons that is sourced through the Bose-Einstein condensate of axions via gravitational interactions. The magnetic fields generated are on galactic scales ~10 kpc and have a magnitude of the order of B~10–23G today. Lastly, the field has a greater magnitude than those generated from other mechanisms relying on second-order perturbation theory, and is sufficient to provide a seed for battery mechanisms.},

  doi          = {10.1103/PhysRevD.93.043003},

  journal      = {Physical Review D},

  number       = 4,

  volume       = 93,

  place        = {United States},

  year         = {Thu Feb 04 00:00:00 EST 2016},

  month        = {Thu Feb 04 00:00:00 EST 2016}

}

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