info:eu-repo/semantics/article
Galactic Constraints on Fermionic Dark Matter
Fecha
2018-12Registro en:
Krut, A.; Argüelles, Carlos Raúl; Rueda, J.; Ruffini, R.; Galactic Constraints on Fermionic Dark Matter; SP MAIK Nauka/Interperiodica; Astronomy Reports; 62; 12; 12-2018; 898-904
1063-7729
1562-6881
CONICET Digital
CONICET
Autor
Krut, A.
Argüelles, Carlos Raúl
Rueda, J.
Ruffini, R.
Resumen
In order to explain Galactic structures, a self-gravitating system composed of massive fermions in spherical symmetry is considered. The finite mass distribution of such a component is obtained after solving the Einstein equation for a thermal and semi-degenerate fermionic gas, described by a perfect fluid in hydrostatic equilibrium and exposed to cutoff effects (e.g. evaporation). Within this more general approach a family of density profiles arises, which explains dark matter halo constraints of the Galaxy and provides at the same time an alternative to the central black hole scenario in Sgr A*. This analysis narrows the allowed particle mass to mc2 = 48−345 keV.