Novel constraints on fermionic dark matter from galactic observables I: The Milky Way

We have recently introduced a new model for the distribution of dark matter (DM) in galaxies based on a self-gravitating system of massive fermions at finite temperatures, the Ruffini–Argü elles–Rueda (RAR) model. We show that this model, for fermion masses in the keV range, explains the DM halo of...

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Detalles Bibliográficos
Autores principales: Argüelles, Carlos Raúl, Krut, A., Rueda, J. A., Ruffini, R.
Formato: Articulo Preprint
Lenguaje:Inglés
Publicado: 2018
Materias:
Astronomía
Cosmology: dark matter
Galaxies: halos, nuclei, structure
Methods: numerical
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/95886
https://ri.conicet.gov.ar/11336/84185
https://arxiv.org/abs/1606.07040
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-95886
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Astronomía
Cosmology: dark matter
Galaxies: halos, nuclei, structure
Methods: numerical
spellingShingle Astronomía
Cosmology: dark matter
Galaxies: halos, nuclei, structure
Methods: numerical
Argüelles, Carlos Raúl
Krut, A.
Rueda, J. A.
Ruffini, R.
Novel constraints on fermionic dark matter from galactic observables I: The Milky Way
topic_facet Astronomía
Cosmology: dark matter
Galaxies: halos, nuclei, structure
Methods: numerical
description We have recently introduced a new model for the distribution of dark matter (DM) in galaxies based on a self-gravitating system of massive fermions at finite temperatures, the Ruffini–Argü elles–Rueda (RAR) model. We show that this model, for fermion masses in the keV range, explains the DM halo of the Galaxy and predicts the existence of a denser quantum core at the center. We demonstrate here that the introduction of a cutoff in the fermion phase-space distribution, necessary to account for the finite Galaxy size, defines a new solution with a central core which represents an alternative to the black hole (BH) scenario for SgrA*. For a fermion mass in the range mc2=48–345 keV, the DM halo distribution is in agreement with the Milky Way rotation curve data, while harbors a dense quantum core of about 4×106M⊙ within the S2-star pericenter.
format Articulo
Preprint
author Argüelles, Carlos Raúl
Krut, A.
Rueda, J. A.
Ruffini, R.
author_facet Argüelles, Carlos Raúl
Krut, A.
Rueda, J. A.
Ruffini, R.
author_sort Argüelles, Carlos Raúl
title Novel constraints on fermionic dark matter from galactic observables I: The Milky Way
title_short Novel constraints on fermionic dark matter from galactic observables I: The Milky Way
title_full Novel constraints on fermionic dark matter from galactic observables I: The Milky Way
title_fullStr Novel constraints on fermionic dark matter from galactic observables I: The Milky Way
title_full_unstemmed Novel constraints on fermionic dark matter from galactic observables I: The Milky Way
title_sort novel constraints on fermionic dark matter from galactic observables i: the milky way
publishDate 2018
url http://sedici.unlp.edu.ar/handle/10915/95886
https://ri.conicet.gov.ar/11336/84185
https://arxiv.org/abs/1606.07040
work_keys_str_mv AT arguellescarlosraul novelconstraintsonfermionicdarkmatterfromgalacticobservablesithemilkyway
AT kruta novelconstraintsonfermionicdarkmatterfromgalacticobservablesithemilkyway
AT ruedaja novelconstraintsonfermionicdarkmatterfromgalacticobservablesithemilkyway
AT ruffinir novelconstraintsonfermionicdarkmatterfromgalacticobservablesithemilkyway
bdutipo_str Repositorios
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