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  Self-gravitating system made of axions

Barranco, J., & Bernal, A. (2011). Self-gravitating system made of axions. Physical Review D, 84(4): 043525. doi:10.1103/PhysRevD.83.043525.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0012-BD27-4 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-0012-BD2B-B
Genre: Journal Article

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1001.1769 (Preprint), 214KB
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 Creators:
Barranco, J.1, Author              
Bernal, A.1, Author              
Affiliations:
1Astrophysical Relativity, AEI-Golm, MPI for Gravitational Physics, Max Planck Society, escidoc:24013              

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Free keywords: Astrophysics, Cosmology and Extragalactic Astrophysics, astro-ph.CO,General Relativity and Quantum Cosmology, gr-qc,High Energy Physics - Phenomenology, hep-ph
 Abstract: We show that the inclusion of an axion-like effective potential in the construction of a self-gravitating system made of scalar fields leads to a decrease on its compactness when the value of the self-interaction coupling constant is increased. By including the current values for the axion mass m and decay constant f_a, we have computed the mass and the radius for self-gravitating systems made of axion particles. It is found that such objects will have asteroid-size masses and radius of few meters, then, the self-gravitating system made of axions could play the role of scalar mini-machos that are mimicking a cold dark matter model for the galactic halo.

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 Dates: 2010-01-1220102011
 Publication Status: Published in print
 Pages: 4 pages, 3 figures
 Publishing info: -
 Table of Contents: -
 Rev. Method: -
 Identifiers: arXiv: 1001.1769
URI: http://arxiv.org/abs/1001.1769
DOI: 10.1103/PhysRevD.83.043525
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Title: Physical Review D
  Other : Phys. Rev. D.
Source Genre: Journal
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Publ. Info: Lancaster, Pa. : Published for the American Physical Society by the American Institute of Physics
Pages: - Volume / Issue: 84 (4) Sequence Number: 043525 Start / End Page: - Identifier: ISSN: 0556-2821
CoNE: http://pubman.mpdl.mpg.de/cone/journals/resource/111088197762258