Papers
Papers published after the start of GWSky in 2025. Links go to arXiv and INSPIRE-HEP.
33 papers
2026-10 · Submitted
Gravitational radiation from a photon on the light ring: multipole fluxes and the logarithmic divergence
E. Barausse
Shows that a photon on the light ring of a Schwarzschild or Kerr black hole radiates gravitational waves in every multipole, with a power that falls only as 1/ℓ, so the total instantaneous power diverges logarithmically. The fluxes to infinity and into the horizon follow analytically from the Regge–Wheeler–Zerilli and Teukolsky equations.
2026-09 · Submitted
Nonlinear evolution in Galileon EFTs: Regularization and screening
F. Thaalba, A. Held, R. Cayuso, T. P. Sotiriou
In a scalar effective field theory with Galileon symmetry, we distinguish the strong-field expansion from the derivative expansion and study spherically symmetric classical nonlinear dynamics, including screening.
2026-09 · Submitted
Introducing SINFONIA: Symplectic, slimplectic and Magnusian (Neural) Flows for Orbital Numerical Integration and Acceleration
L. J. Gomes Da Silva
Introduces three structure-preserving neural-flow architectures for long-duration gravitational-wave inspirals, showing that encoding secular energy–angular-momentum balance keeps chained phase errors small at orbital-period timesteps.
2026-07 · Submitted
Environmental effects vs. modified gravity in the LISA massive black hole binary population
L. Copparoni, E. Barausse
Gravitational-wave signals from massive black hole binaries observed by LISA can carry imprints of both the astrophysical environment of the source and possible deviations from general relativity. We investigate whether environmental effects leave a detectable imprint on the LISA binary population, and whether they can mimic modified-gravity effects with the same frequency dependence.
2026-05 · Submitted
When the Ringing Stops: Purely Imaginary Modes in the Ringdown Spectrum of Dynamical Black Holes
L. Capuano, T. Lovo, G. Prieto-Varela, S. Sarkar, A. Kuntz, E. Barausse, D. Kothawala
We extend the frequency-domain analysis of quasinormal modes in a dynamical, spherically symmetric black hole spacetime undergoing constant-rate mass evolution, and report purely imaginary eigenvalues in addition to the usual light-ring modes.
2026-05 · Submitted
Impact of sky localization uncertainty on ringdown inference
K. Dey, E. Barausse, M. Crisostomi, R. Trotta
Assesses how uncertainty in gravitational-wave sky localization propagates into black-hole ringdown parameter inference, with implications for tests of gravity with next-generation detectors.
2026-05 · Phys. Rev. D 114, 063026 (2026)
Implications of the LISA stochastic signal from eccentric stellar mass black hole binaries in vacuum
R. Chen, R. S. Chandramouli, F. Pozzoli, R. Buscicchio, E. Barausse
Astrophysical formation channels of stellar-mass binary black holes can induce significant orbital eccentricities in their early inspiral. We analyze the implications for the LISA stochastic gravitational-wave background from unresolved sBBHs.
2026-05 · Submitted
Constraints on Einstein-aether gravity from the precision timing of PSR J1738+0333
M. Vaglio, A. Carleo, A. Susobhanan, E. Barausse, B. B. Salem, A. Corongiu, P. C. Freire, D. Perrodin
Uses the precision timing of the binary pulsar PSR J1738+0333 to constrain Einstein-aether gravity.
2026-05 · Phys. Rev. D 114, 024073 (2026)
Scalar emission from binary neutron stars in scalar-tensor theories with kinetic screening
R. Cayuso, A. Kuntz, T. Assumpcao, M. Bezares, E. Barausse
Numerical-relativity study of scalar emission from binary neutron stars in scalar-tensor theories with kinetic screening, relevant for tests of gravity with next-generation detectors.
2026-04 · Submitted
The LISA Astrophysics MBHcatalogues Project: A comparison of predictions of simulated massive black hole binaries
D. Izquierdo-Villalba, M. Habouzit, M. Bonetti et al. (incl. E. Barausse)
Comparison of simulated massive black hole binary catalogues for LISA astrophysics, produced by the LISA Astrophysics Working Group.
2026-03 · Submitted
Short-Term Turbulence Prediction for Seeing Using Machine Learning
M. J. Medlej, R. Srinivasan, S. Prunet, A. Ziad, C. Giordano
Compares statistical and deep-learning forecasts, including a normalizing flow for time series, for the atmospheric seeing parameter up to two hours ahead, using only historical seeing measurements.
2026-03 · Submitted
Reducing cosmological degeneracies by combining multiple classes of LISA gravitational-wave standard sirens
D. Laghi, N. Tamanini, A. Sesana, J. Gair, E. Barausse, C. Caprini, W. Del Pozzo, A. Mangiagli, S. Marsat
Shows how combining multiple classes of LISA standard sirens reduces cosmological parameter degeneracies for next-generation gravitational-wave cosmology.
2026-03 · Phys. Rev. D 114, 084020 (2026)
Looking for non-gaussianity in Pulsar Timing Arrays through the four point correlator
A. Kuntz, C. Smarra, M. Vaglio
Searches for non-Gaussian signatures in pulsar-timing-array stochastic backgrounds using the four-point correlator.
2026-03 · Submitted
Extreme mass ratio head-on collisions of black holes in Einstein-scalar-Gauss-Bonnet theory
A. M. Frassino, D. C. Lopes, J. V. Rocha
Ray-tracing study of event-horizon evolution in infinite-mass-ratio head-on collisions of hairy black holes in Einstein-scalar-Gauss-Bonnet gravity, compared with general relativity.
2026-02 · Phys. Rev. D 114, 024017 (2026)
Systematic biases in parameter estimation on LISA binaries. II. The effect of excluding higher harmonics for spin-aligned, high-mass binaries
S. Yi, F. Iacovelli, E. Berti, R. S. Chandramouli, S. Marsat, D. Wadekar, N. Yunes
Assesses systematic parameter-estimation biases for LISA massive black hole binaries when higher harmonics are dropped from spin-aligned, high-mass waveform models.
2026-02 · Phys. Rev. D 113, 124038 (2026)
Dynamical hair growth in black hole binaries in Einstein-scalar-Gauss-Bonnet gravity
L. Capuano, L. Aresté Saló, D. D. Doneva, S. S. Yazadjiev, E. Barausse
Numerical-relativity study of dynamical scalar hair growth in black hole binaries in Einstein-scalar-Gauss-Bonnet gravity.
2026-01 · Phys. Rev. D 113, 104034 (2026)
Detectability of gravitational-wave memory with LISA: A Bayesian approach
A. Cogez, S. Gasparotto, J. Zosso, H. Inchauspé, C. Pitte, L. Magaña Zertuche, A. Petiteau, M. Besancon
Bayesian study of whether LISA can detect and reconstruct the displacement memory effect from individual massive black hole binary mergers.
2025-12 · Astrophys. J. Lett. 996, L9 (2026)
Search for Gravitational-wave Memory in PPTA and EPTA Data: A Complete Signal Model
S. M. Tomson, B. Goncharov, R. van Haasteren et al. (incl. R. Srinivasan, E. Barausse)
A complete signal model for gravitational-wave memory searches in PPTA and EPTA pulsar-timing data.
2025-11 · Submitted
The Penrose Transform and the Kerr-Schild double copy
E. Albertini, M. L. Graesser, G. Herczeg
Connects the Kerr–Schild and twistorial classical double copies for a class of self-dual vacuum solutions, using the Penrose transform.
2025-10 · Phys. Rev. D 113, 064001 (2026)
Hierarchical modeling of gravitational-wave populations for disentangling environmental and modified-gravity effects
S. Kejriwal, E. Barausse, A. J. Chua
Hierarchical population modelling designed to separate astrophysical environmental effects from genuine deviations from general relativity in gravitational-wave catalogues.
2025-10 · Phys. Rev. Lett. 137, 021405 (2026)
When Vacuum Breaks: A Self-Consistency Test for Astrophysical Environments in Extreme Mass Ratio Inspirals
L. Copparoni, R. S. Chandramouli, E. Barausse
Proposes a self-consistency test to decide when vacuum gravitational-wave models fail for extreme mass-ratio inspirals embedded in astrophysical environments.
2025-07 · Phys. Rev. D 113, 124003 (2026)
Searching for gravitational waves with Gaia and its cross-correlation with PTA: Absolute vs differential astrometry
M. Vaglio, M. Falxa, G. Mentasti, A. I. Renzini, A. Kuntz, E. Barausse, C. R. Contaldi, A. Sesana
Compares absolute and differential astrometry for gravitational-wave searches with Gaia and their cross-correlation with pulsar timing arrays.
2025-07 · Phys. Lett. B 869, 139877 (2025)
Weak cosmic censorship with spinning particles in Kerr-(A)dS spacetimes
A. M. Frassino, J. V. Rocha, A. P. Sanna
Tests whether spinning particles dropped into extremal Kerr-(A)dS black holes can overspin them, extending the Wald–Needham analysis to a nonzero cosmological constant.
2025-07 · Phys. Rev. D 112, 084053 (2025)
Environmental effects in the LISA stochastic signal from stellar-mass black hole binaries
R. Chen, R. S. Chandramouli, F. Pozzoli, R. Buscicchio, E. Barausse
Quantifies how astrophysical environments modify the LISA stochastic gravitational-wave signal produced by stellar-mass black hole binaries.
2025-07 · Astron. Astrophys. 700, A135 (2025)
Reconciling PTA and JWST and preparing for LISA with POMPOCO: a Parametrisation Of the Massive black hole POpulation for Comparison to Observations
A. Toubiana, L. Sberna, M. Volonteri, E. Barausse, S. Babak, R. Enficiaud, D. Izquierdo-Villalba et al.
A fast parametrised model of the massive black hole population, calibrated against the pulsar-timing-array background and JWST black hole observations, used to forecast LISA merger rates. Submitted to arXiv in October 2024 and published in July 2025, acknowledging GWSky.
2025-06 · Phys. Rev. D 112, 103043 (2025)
Simulation-based population inference of LISA’s Galactic binaries: Bypassing the global fit
R. Srinivasan, E. Barausse, N. Korsakova, R. Trotta
A simulation-based inference pipeline for the Galactic-binary population in LISA that can bypass a computationally expensive global fit.
2025-06 · Phys. Rev. D 112, 104031 (2025)
Systematic bias in LISA ringdown analysis due to waveform inaccuracy
L. Capuano, M. Vaglio, R. S. Chandramouli, C. L. Pitte, A. Kuntz, E. Barausse
Assesses systematic biases in LISA ringdown analyses of massive black hole binaries caused by incomplete waveform models.
2025-05 · Class. Quantum Grav. 43, 123001 (2026)
Black hole spectroscopy: from theory to experiment
E. Berti, V. Cardoso, G. Carullo et al. (incl. C. Pitte)
Review of black-hole spectroscopy: predicting quasinormal-mode frequencies and amplitudes, and comparing them with gravitational-wave ringdown data to test strong-field gravity.
2025-05 · Phys. Rev. D 112, 064005 (2025)
Probing supermassive black hole scalarization with pulsar timing arrays
C. Smarra, L. Capuano, A. Kuntz
Explores how scalarization of supermassive black holes in Einstein-scalar-Gauss-Bonnet gravity, occurring in a narrow mass window that leaves LIGO/Virgo sources unaffected, alters the characteristic strain of the stochastic background observed by pulsar timing arrays.
2025-05 · Class. Quantum Grav. 42, 185017 (2025)
A neural network for estimating compact binary coalescence parameters of gravitational-wave events in real time
S. Sharma Chaudhary, G. Puleo, M. Cavaglià
A quantile-regression neural network that places real-time bounds on compact-binary parameters for low-latency gravitational-wave pipelines, where template banks and non-stationary noise limit matched filtering.
2025-05 · Int. J. Mod. Phys. D 34, 2544024 (2025)
Quantum censors: Backreaction builds horizons
A. M. Frassino, R. A. Hennigar, J. F. Pedraza, A. Svesko
Gravity Research Foundation essay arguing that semi-classical backreaction generates horizons that enforce cosmic censorship, using holographic solutions of semi-classical gravity.
2025-04 · Astron. Astrophys. 708, A153 (2026)
Can a time-evolving, asymmetric broad line region mimic a massive black hole binary?
E. Sottocorno, M. Ogborn, L. Bertassi, F. Rigamonti, M. Bonetti, M. Eracleous, M. Dotti
Tests whether a single, strongly asymmetric broad-line region around one massive black hole can imitate the spectroscopic variability expected from a massive black-hole binary. The model does not generate the false positives that binary-search algorithms would select.
2025-02 · Phys. Rev. D 111, 104079 (2025)
Implications of stochastic gas torques for asymmetric binaries in the LISA band
L. Copparoni, E. Barausse, L. Speri, L. Sberna, A. Derdzinski
Studies how stochastic gas torques in accretion disks affect asymmetric black-hole binaries in the LISA band.