109 citations · 186 across the 5 of their papers we have counts for
15 papers
A stabilization mechanism for excited fermion-boson stars
Fabrizio Di Giovanni, Saeed Fakhry, Nicolas Sanchis-Gual +2
We study numerically the nonlinear stability of {\it excited} fermion-boson stars in spherical symmetry. Such compound hypothetical stars, composed by fermions and bosons, are grav…
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…
Stability study of a model for the Klein-Gordon equation in Kerr space-time II
Horst Reinhard Beyer, Miguel Alcubierre, Miguel Megevand
The present paper is a follow-up of our previous paper that derives a slightly simplified model equation for the Klein-Gordon equation, describing the propagation of a scalar field…
Gravitational waves from binary black hole mergers surrounded by scalar field clouds: Numerical simulations and observational implications
Sunil Choudhary, Nicolas Sanchis-Gual, Anshu Gupta +3
We show how gravitational-wave observations of binary black hole (BBH) mergers can constrain the physical characteristics of a scalar field cloud parameterized by mass an…
On the formation of "supermassive" neutron stars and dynamical transition to spontaneous scalarization
Juan Carlos Degollado, Marcelo Salgado, Miguel Alcubierre
It is well known that neutron stars can undergo a phase transition under a certain class of Scalar Tensor Theories of gravity (STT's) where a new order parameter, the {\it scalar c…