1.1k citations · 2.3k across the 13 of their papers we have counts for
15 papers
Can LISA See Inside the Little Red Dots?
Samuel Gómez Gómez, Xisco Jimenez Forteza, Carlos Palenzuela +1
The Little Red Dots (LRDs) are compact, broad-line sources that appear to contain accreting black holes (BHs) embedded in dense gas. Proposed models for their central environments…
Impact of the axion-like self-interactions in gravitational atoms for LISA
Samuel Gómez Gómez, Xisco Jimenez Forteza, Carlos Palenzuela Luque
Ultralight bosons with self-interactions, such as axion-like particles, can form astrophysical Bose--Einstein condensates around stars or compact objects, often referred to as grav…
Spectral suppression of black hole ringdown tails
Jose Antonio León Vega, Alejandro Svyatkovskyy Kholyavka, Sayak Datta +1
The late-time power law tail predicted by Price's law is a generic feature of black hole perturbation theory, yet it is largely absent in numerical relativity waveforms of binary b…
Shaping black hole resonances I. Black hole ringdown as a spectral filtering process
Alejandro Svyatkovskyy Kholyavka, Jose Antonio León Vega, Samuel Gómez Gómez +2
The ringdown of a perturbed black hole (BH) can be described as a superposition of quasinormal modes (QNMs), whose frequencies are determined by the spacetime geometry while their…
Linear vs. nonlinear modeling of black hole ringdowns
Yi Qiu, Xisco Jiménez Forteza, Pierre Mourier
The ringdown (RD) phase of gravitational waves is of prime interest for testing general relativity (GR). The modelling of the linear quasi-normal modes (QNMs) within the Kerr spect…
Nonlinear ringdown at the black hole horizon
Neev Khera, Ariadna Ribes Metidieri, Béatrice Bonga +6
The gravitational waves emitted by a perturbed black hole ringing down are well described by damped sinusoids, whose frequencies are those of quasinormal modes. Typically, first-or…
A novel ringdown amplitude-phase consistency test
Xisco Jiménez Forteza, Swetha Bhagwat, Sumit Kumar +1
The ringdown signal emitted during a binary black hole coalescence can be modeled as a linear superposition of the characteristic damped modes of the remnant black hole that get ex…
Parameter Estimation with Nonstationary Noise in Gravitational-wave Data
Sumit Kumar, Alexander H. Nitz, Xisco Jiménez Forteza
The sensitivity of gravitational-wave (GW) detectors is characterized by their noise curves, which determine the detector's reach and ability to measure the parameters of astrophys…
High-overtone fits to numerical relativity ringdowns: beyond the dismissed n=8 special tone
Xisco Jiménez Forteza, Pierre Mourier
In general relativity, the remnant object originating from an uncharged black hole merger is a Kerr black hole. The approach to this final state is reached through the emission of…
Spectroscopy of binary black hole ringdown using overtones and angular modes
Xisco Jiménez Forteza, Swetha Bhagwat, Paolo Pani +1
The black hole uniqueness and the no-hair theorems imply that the quasinormal spectrum of any astrophysical black hole is determined solely by its mass and spin. The countably infi…
Ringdown overtones, black hole spectroscopy, and no-hair theorem tests
Swetha Bhagwat, Xisco Jimenez Forteza, Paolo Pani +1
Validating the black-hole no-hair theorem with gravitational-wave observations of compact binary coalescences provides a compelling argument that the remnant object is indeed a bla…
The mass-radius relation for neutron stars in gravity: a comparison between purely metric and torsion formulations
Pasquale Feola, Xisco Jimenez Forteza, Salvatore Capozziello +2
Within the framework of gravity, we study realistic models of neutron stars, using equations of state compatible with the LIGO constraints. i.e. APR4, MPA1, SLy, and…
The most powerful astrophysical events: Gravitational-wave peak luminosity of binary black holes as predicted by numerical relativity
David Keitel, Xisco Jiménez Forteza, Sascha Husa +9
For a brief moment, a binary black hole (BBH) merger can be the most powerful astrophysical event in the visible universe. Here we present a model fit for this gravitational-wave p…
Frequency-domain gravitational waves from non-precessing black-hole binaries. II. A phenomenological model for the advanced detector era
Sebastian Khan, Sascha Husa, Mark Hannam +4
We present a new frequency-domain phenomenological model of the gravitational-wave signal from the inspiral, merger and ringdown of non-precessing (aligned-spin) black-hole binarie…
Frequency-domain gravitational waves from non-precessing black-hole binaries. I. New numerical waveforms and anatomy of the signal
Sascha Husa, Sebastian Khan, Mark Hannam +4
In this paper we discuss the anatomy of frequency-domain gravitational-wave signals from non-precessing black-hole coalescences with the goal of constructing accurate phenomenologi…