58 citations · 132 across the 7 of their papers we have counts for
10 papers · 1 filter
Accretion of a Vlasov gas on to a black hole from a sphere of finite radius and the role of angular momentum
Aldo Gamboa, Carlos Gabarrete, Paola Domínguez-Fernández +2
The accretion of a spherically symmetric, collisionless kinetic gas cloud on to a Schwarzschild black hole is analysed. Whereas previous studies have treated this problem by specif…
Long-wavelength non-linear perturbations of a complex scalar field
Luis E. Padilla, Juan Carlos Hidalgo, Darío Núñez
We study the evolution of nonlinear superhorizon perturbations in a universe dominated by a complex scalar field. The analysis is performed adopting the gradient expansion approach…
Gravitational and electromagnetic perturbations of a charged black hole in a general gauge condition
Claudia Moreno, Juan Carlos Degollado, Darío Núñez +1
We derive a set of coupled equations for the gravitational and electromagnetic perturbation in the Reissner-Nordström geometry using the Newman Penrose formalism. We show that the…
On the linear stability of -boson stars with respect to radial perturbations
Miguel Alcubierre, Juan Barranco, Argelia Bernal +5
In previous work we constructed new boson star solutions consisting of a family of massive complex scalar fields minimally coupled to gravity in which the individual fields have an…
Observational constraints on complex quintessence with attractive self-interaction
Belen Carvente, Víctor Jaramillo, Celia Escamilla-Rivera +1
In this paper we consider that dark energy could be described solely by a complex scalar field with a Bose-Einstein condensate-like potential (denoted as CSFDE), that is, with a se…
Dynamical -boson stars: generic stability and evidence for non-spherical solutions
Víctor Jaramillo, Nicolas Sanchis-Gual, Juan Barranco +4
-boson stars are static, spherical, multi-field self-gravitating solitons. They are asymptotically flat, finite energy solutions of Einstein's gravity minimally coupled to an…