742 citations · 1.2k across the 25 of their papers we have counts for
25 papers
Quadrupole perturbations of slowly spinning Ellis-Bronnikov wormholes
Bahareh Azad, Jose Luis Blázquez-Salcedo, Fech Scen Khoo +2
We study the axial and polar perturbations of slowly rotating Ellis-Bronnikov wormholes in General Relativity, applying a perturbative double expansion. In particular, we derive th…
Black hole spectroscopy: from theory to experiment
Emanuele Berti, Vitor Cardoso, Gregorio Carullo +65
The "ringdown" radiation emitted by oscillating black holes has great scientific potential. By carefully predicting the frequencies and amplitudes of black hole quasinormal modes a…
-modes of neutron stars in a massless scalar-tensor theory
Jose Luis Blázquez-Salcedo, Luis Manuel González-Romero, Fech Scen Khoo +2
Scalar-tensor theories allow for a rich spectrum of quasinormal modes of neutron stars. The presence of the scalar field allows for polar monopole and dipole radiation, as well as…
Probing the Ellis-Bronnikov wormhole geometry with a scalar field: clouds, waves and Q-balls
Jose Luis Blázquez-Salcedo, Marina-Aura Dariescu, Ciprian Dariescu +2
The Ellis-Bronnikov solution provides a simple toy model for the study of various aspects of wormhole physics. In this work we solve the Klein-Gordon equation in this background an…
Compact Objects in Alternative Gravities
Jose Luis Blázquez-Salcedo, Burkhard Kleihaus, Jutta Kunz
We address neutron stars and black holes in alternative gravities, after recalling their basic properties in General Relativity. Among the plethora of interesting alternative gravi…
Traversable wormholes in Einstein-Dirac-Maxwell theory
Jose Luis Blázquez-Salcedo, Christian Knoll, Eugen Radu
We construct a specific example of a class of traversable wormholes in Einstein-Dirac-Maxwell theory in four spacetime dimensions, without needing any form of exotic matter. Restri…
Thermodynamically stable asymptotically flat hairy black holes with a dilaton potential: the general case
Dumitru Astefanesei, Jose Luis Blázquez-Salcedo, Francisco Gómez +1
We extend the analysis, initiated in arXiv:1901.01269, of the thermodynamic stability of four-dimensional asymptotically flat hairy black holes by considering a general class of ex…
Quasinormal modes of compact objects in alternative theories of gravity
Jose Luis Blázquez-Salcedo, Zahra Altaha Motahar, Daniela D. Doneva +5
We address quasinormal modes of compact objects in several alternative theories of gravity. In particular, we focus on black holes and neutron stars with scalar hair. We consider b…
Black holes, gravitational waves and fundamental physics: a roadmap
Leor Barack, Vitor Cardoso, Samaya Nissanke +203
The grand challenges of contemporary fundamental physics---dark matter, dark energy, vacuum energy, inflation and early universe cosmology, singularities and the hierarchy problem-…
Squashed, magnetized black holes in minimal gauged supergravity
Jose Luis Blázquez-Salcedo, Jutta Kunz, Francisco Navarro-Lérida +1
We construct a new class of black hole solutions in five-dimensional Einstein-Maxwell-Chern-Simons theory with a negative cosmological constant. These configurations are cohomogene…
Radially Excited AdS Black Holes in Einstein--Maxwell--Chern--Simons Theory
Jose Luis Blázquez-Salcedo
In the large coupling regime of the 5-dimensional Einstein--Maxwell--Chern--Simons theory, charged and rotating cohomogeneity-1 black holes form sequences of extremal and non-extre…
Static Einstein-Maxwell Magnetic Solitons and Black Holes in an Odd Dimensional AdS Spacetime
Jose Luis Blázquez-Salcedo, Jutta Kunz, Francisco Navarro-Lérida +1
We construct a new class of Einstein-Maxwell static solutions with a magnetic field in -dimensions (with an odd number), approaching at infinity a globally Anti-de Sit…
Black holes in Einstein-Gauß-Bonnet-dilaton theory
Jose Luis Blázquez-Salcedo, Vitor Cardoso, Valeria Ferrari +9
Generalizations of the Schwarzschild and Kerr black holes are discussed in an astrophysically viable generalized theory of gravity, which includes higher curvature corrections in t…
Radially excited rotating black holes in Einstein-Maxwell-Chern-Simons theory
Jose Luis Blázquez-Salcedo, Jutta Kunz, Francisco Navarro-Lérida +1
Rotating black holes in Einstein-Maxwell-Chern-Simons theory possess remarkable features, when the Chern-Simons coupling constant reaches a critical value. Representing single asym…
Extremal rotating black holes in Einstein-Maxwell-Chern-Simons theory: radially excited solutions and non-uniqueness
Jose Luis Blazquez-Salcedo
We study 5-dimensional black holes in Einstein-Maxwell-Chern-Simons theory with free Chern-Simons coupling parameter. We consider an event horizon with spherical topology, and both…
Properties of rotating Einstein-Maxwell-Dilaton black holes in odd dimensions
Jose Luis Blazquez-Salcedo, Jutta Kunz, Francisco Navarro-Lerida
We investigate rotating Einstein-Maxwell-Dilaton (EMd) black holes in odd dimensions. Focusing on black holes with equal-magnitude angular momenta, we determine the domain of exist…
Angular momentum-area proportionality of extremal charged black holes in odd dimensions
Jose Luis Blazquez-Salcedo, Jutta Kunz, Francisco Navarro-Lerida
Extremal rotating black holes in Einstein-Maxwell theory feature two branches. On the branch emerging from the Myers-Perry solutions their angular momentum is proportional to their…
Sequences of extremal radially excited rotating black holes
Jose Luis Blazquez-Salcedo, Jutta Kunz, Francisco Navarro-Lerida +1
In Einstein-Maxwell-Chern-Simons theory the extremal Reissner-Nordström solution is no longer the single extremal solution with vanishing angular momentum, when the Chern-Simons co…
Axial Quasi-normal modes of Neutron Stars with Exotic Matter
J. L. Blázquez-Salcedo, L. M. González-Romero, F. Navarro-Lérida
We investigate the axial w quasi-normal modes of neutron stars for 18 realistic equations of state in order to study the influence of hyperons and quarks on the modes. The study ha…
Core-crust transition pressure for relativistic slowly rotating neutron stars
L. M. González-Romero, J. L. Blázquez-Salcedo
We study the influence of core-\textit{crust} transition pressure changes on the general dynamical properties of neutron star configurations. First we study the matching conditions…
Exotic matter influence on the polar quasi-normal modes of neutron stars with equations of state satisfying the constraint
J. L. Blázquez-Salcedo, L. M. González-Romero, F. Navarro-Lérida
In this paper we analyze the quasi-normal mode spectrum of realistic neutron stars by studying the polar modes. In particular we study the spatial wI mode, the f mode, and the fund…
Non-Abelian Chern-Simons-Higgs vortices with a quartic potential
J. L. Blazquez-Salcedo, L. M. Gonzalez-Romero, F. Navarro-Lerida +1
We have constructed numerically non-Abelian vortices in an SU(2) Chern-Simons-Higgs theory with a quartic Higgs potential. We have analyzed these solutions in detail by means of im…
Phenomenological Relations for Axial Quasi-normal Modes of Neutron Stars with Realistic Equations of State
J. L. Blázquez-Salcedo, L. M. González-Romero, F. Navarro-Lérida
Here we investigate the axial w quasi-normal modes of neutron stars for several equations of state. In particular, we study the influence of the presence of hyperons in the core of…
New model of relativistic slowly rotating neutron stars with surface layer \textit{crust}: application to giant \textit{glitches} of Vela Pulsar
L. M. González-Romero, J. L. Blázquez-Salcedo
Introducing a surface layer of matter on the edge of a neutron star in slow rigid rotation, we analyze, from an intrinsic point of view, the junction conditions that must be satisf…