On the possibility of Bose-star formation

The relaxation time of a gravitationally bounded cloud of bosons is estimated for the case of a large phase-space density of particles. The axionic mass and self-coupling relaxation time are compatible to the age of the Universe if the escape velocity and the mass in the core region satisfy the rela...

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Autor principal: Tkachev, I.I.
Formato: JOUR
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_03702693_v261_n3_p289_Tkachev
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_03702693_v261_n3_p289_Tkachev
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spelling todo:paper_03702693_v261_n3_p289_Tkachev2023-10-03T15:28:43Z On the possibility of Bose-star formation Tkachev, I.I. The relaxation time of a gravitationally bounded cloud of bosons is estimated for the case of a large phase-space density of particles. The axionic mass and self-coupling relaxation time are compatible to the age of the Universe if the escape velocity and the mass in the core region satisfy the relation M < 108ve 5 2φ10 - 1 4M⊙. In the central part of such a cloud an axionic cosmic matter with luminosity ∼ 10-2vr 5 2φ10 - 1 4M⊙/yr will form. An upper bound on the self-coupling is obtained provided the mass distribution in galaxies is dominated by this kind of dark matter. © 1991. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_03702693_v261_n3_p289_Tkachev
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
description The relaxation time of a gravitationally bounded cloud of bosons is estimated for the case of a large phase-space density of particles. The axionic mass and self-coupling relaxation time are compatible to the age of the Universe if the escape velocity and the mass in the core region satisfy the relation M < 108ve 5 2φ10 - 1 4M⊙. In the central part of such a cloud an axionic cosmic matter with luminosity ∼ 10-2vr 5 2φ10 - 1 4M⊙/yr will form. An upper bound on the self-coupling is obtained provided the mass distribution in galaxies is dominated by this kind of dark matter. © 1991.
format JOUR
author Tkachev, I.I.
spellingShingle Tkachev, I.I.
On the possibility of Bose-star formation
author_facet Tkachev, I.I.
author_sort Tkachev, I.I.
title On the possibility of Bose-star formation
title_short On the possibility of Bose-star formation
title_full On the possibility of Bose-star formation
title_fullStr On the possibility of Bose-star formation
title_full_unstemmed On the possibility of Bose-star formation
title_sort on the possibility of bose-star formation
url http://hdl.handle.net/20.500.12110/paper_03702693_v261_n3_p289_Tkachev
work_keys_str_mv AT tkachevii onthepossibilityofbosestarformation
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