52 citations · 284 across the 15 of their papers we have counts for
15 papers
Total-variation methods for gravitational-wave denoising: performance tests on Advanced LIGO data
Alejandro Torres-Forné, Elena Cuoco, Antonio Marquina +2
We assess total-variation methods to denoise gravitational-wave signals in real noise conditions, by injecting numerical-relativity waveforms from core-collapse supernovae and bina…
Denoising of gravitational wave signals via dictionary learning algorithms
Alejandro Torres-Forné, Antonio Marquina, José A. Font +1
Gravitational wave astronomy has become a reality after the historical detections accomplished during the first observing run of the two advanced LIGO detectors. In the following y…
Denoising of gravitational-wave signal GW150914 via total-variation methods
Alejandro Torres-Forné, Antonio Marquina, José A. Font +1
We apply a regularized Rudin-Osher-Fatemi total variation (TV) method to denoise the transient gravitational wave signal GW150914. We have previously applied TV techniques to denoi…
On the convexity of Relativistic Ideal Magnetohydrodynamics
José-María Ibáñez, Isabel Cordero-Carrión, Miguel-Ángel Aloy +2
We analyze the influence of the magnetic field in the convexity properties of the relativistic magnetohydrodynamics system of equations. To this purpose we use the approach of Lax,…
Total-variation-based methods for gravitational wave denoising
Alejandro Torres, Antonio Marquina, José A. Font +1
We describe new methods for denoising and detection of gravitational waves embedded in additive Gaussian noise. The methods are based on Total Variation denoising algorithms. These…
On the convexity of Relativistic Hydrodynamics
José María Ibáñez, Isabel Cordero-Carrión, José María Martí +1
The relativistic hydrodynamic system of equations for a perfect fluid obeying a causal equation of state is hyperbolic (Anile 1989 {\it Relativistic Fluids and Magneto-Fluids} (Cam…
Maximal slicings in spherical symmetry: local existence and construction
Isabel Cordero-Carrión, José María Ibáñez, Juan Antonio Morales-Lladosa
We show that any spherically symmetric spacetime locally admits a maximal spacelike slicing and we give a procedure allowing its construction. The construction procedure that we ha…
Gravitational waves in dynamical spacetimes with matter content in the Fully Constrained Formulation
Isabel Cordero-Carrión, Pablo Cerdá-Durán, José María Ibáñez
The Fully Constrained Formulation (FCF) of General Relativity is a novel framework introduced as an alternative to the hyperbolic formulations traditionally used in numerical relat…
A Roe-type Riemann solver based on the spectral decomposition of the equations of Relativistic Magnetohydrodynamics
J. M. Ibáñez, M. A. Aloy, P. Mimica +3
In a recent paper (Antón et al. 2010) we have derived sets of right and left eigenvectors of the Jacobians of the relativistic MHD equations, which are regular and span a complete…
On the local existence of maximal slicings in spherically symmetric spacetimes
Isabel Cordero-Carrión, José María Ibáñez, Juan Antonio Morales-Lladosa
In this talk we show that any spherically symmetric spacetime admits locally a maximal spacelike slicing. The above condition is reduced to solve a decoupled system of first order…
Dynamical spacetimes and gravitational radiation in a Fully Constrained Formulation
Isabel Cordero-Carrión, Pablo Cerdá-Durán, José María Ibáñez
This contribution summarizes the recent work carried out to analyze the behavior of the hyperbolic sector of the Fully Constrained Formulation (FCF) derived in Bonazzola et al. 200…
Disks in Expanding FRW Universes
A. Feinstein, J. Ibáñez, R. Lazkoz
We construct exact solutions to Einstein equations which represent relativistic disks immersed into an expanding FRW Universe. It is shown that the expansion influences dynamical c…
Asymptotic behaviour of a class of inhomogeneous scalar field cosmologies
J. Ibáñez, I. Olasagasti
The asymptotic behaviour of a class of inhomogeneous scalar field cosmologies with a Liouville type of potential is studied. We define a set of new variables for which the phase sp…
Cosmologies with Two-Dimensional Inhomogeneity
A. Feinstein, J. Ibáñez, Ruth Lazkoz
We present a new generating algorithm to construct exact non static solutions of the Einstein field equations with two-dimensional inhomogeneity. Infinite dimensional families of $…
Scalar Field Inhomogeneous Cosmologies
A. Feinstein, J. Ibáñez, P. Labraga
Some exact solutions for the Einstein field equations corresponding to inhomogeneous cosmologies with an exponential-potential scalar field which generalize solutions obtaine…