35 citations · 126 across the 15 of their papers we have counts for
15 papers
Relativistic and Newtonian Proca Stars: A Tale of Two Limits
Alberto Diez-Tejedor, Carlos Herdeiro, Claudio Lazarte +4
We investigate a representative set of static solitonic solutions of the Einstein-Proca theory in the Newtonian regime, where the field frequency approaches the particle mass, $ω\t…
The continuum spectrum of nonrelativistic multi-frequency Proca stars
Galo Diaz-Andrade, Alberto Diez-Tejedor, Jose Luis Medina-Garcia +1
Multi-frequency Proca stars are excited selfgravitating solutions of the Schrödinger-Poisson system that generalize the conventional stationary states of a massive vector fie…
Linear stability of nonrelativistic Proca stars
Emmanuel Chávez Nambo, Galo Diaz-Andrade, Alberto Diez-Tejedor +3
We study the linear stability of nonrelativistic Proca stars under generic perturbations. Using a combination of analytic and numerical methods, we demonstrate that, as expected, t…
Compact stars in Einstein-scalar-Gauss-Bonnet gravity: regular and divergent scalar field configurations
Roberto D. Alba Q., Javier Chagoya, Armando A. Roque
We investigate static, spherically symmetric solutions in Einstein-scalar-Gauss-Bonnet gravity non-minimally coupled to a massless real scalar field, both in vacuum and in the pres…
Signatures of cubic gravity in the strong regime
Flavio C. Sánchez, Armando A. Roque, Javier Chagoya
We investigate the effects of Einsteinian cubic gravity in the strong gravitational regime. In the first part, we explore analytical solutions for a static, spherically symmetric m…
Nonrelativistic Proca stars: Spherical stationary and multi-frequency states
Emmanuel Chávez Nambo, Alberto Diez-Tejedor, Edgar Preciado-Govea +2
In this paper we follow an effective theory approach to study the nonrelativistic limit of a selfgravitating and selfinteracting massive vector field. Our effective theory is chara…
On the linear stability of nonrelativistic selfinteracting boson stars
Emmanuel Chávez Nambo, Alberto Diez-Tejedor, Armando A. Roque +1
In this paper we study the linear stability of selfinteracting boson stars in the nonrelativistic limit of the Einstein-Klein-Gordon theory. For this purpose, based on a combinatio…
Are nonrelativistic ground state -boson stars only stable for and ?
Emmanuel Chávez Nambo, Armando A. Roque, Olivier Sarbach
In previous work we analyzed the linear stability of non-relativistic -boson stars with respect to radial modes and showed that ground state configurations are stable with re…
Total light bending in non-asymptotically flat black hole spacetimes
Flavio C. Sánchez, Armando A. Roque, Benito Rodríguez +1
The gravitational deflection of light is a critical test of modified theories of gravity. A few years ago, Gibbons and Werner introduced a definition of the deflection angle based…
On the radial linear stability of nonrelativistic -boson stars
Armando A. Roque, Emmanuel Chávez Nambo, Olivier Sarbach
We study the linear stability of nonrelativistic -boson stars, describing static, spherically symmetric configurations of the Schrödinger-Poisson system with multiple wave fu…
Horndeski fermion-boson stars
Armando A. Roque, L. Arturo Ureña-López
We establish the existence of static and spherically symmetric fermion-boson stars, in a low energy effective model of (beyond) Horndeski theories. These stars are in equilibrium,…
Horndeski stars
Juan Barranco, Javier Chagoya, Alberto Diez-Tejedor +2
We establish the existence of time-dependent solitons in a modified gravity framework, which is defined by the low energy limit of theories with a weakly broken galileon symmetry a…
Strong lensing by DHOST black holes
Javier Chagoya, C. Ortiz, Benito Rodríguez +1
The deflection of light in the strong field limit is an important test for alternative theories of gravity. However, solutions for the metric that allow for analytic computations a…
Confusing dark matter particle properties with modifications to General Relativity
Armando A. Roque, J. Barranco
Cold Dark Stars made of self-gravitating fermions in the degenerate limit are constructed in General Relativity and in R-square gravity, . The properties of the result…
Qualitative analysis of Kantowski-Sachs metric in a generic class of models
Genly Leon, Armando A. Roque
In this paper we investigate, from the dynamical systems perspective, the evolution of a Kantowski-Sachs metric in a generic class of models. We present conditions (i. e., d…