Simons Collaboration on Black Holes and Strong Gravity

PUBLICATIONS

Measuring a Black Hole’s Area Immediately after Merger: A Direct-Wave Test of Hawking’s Area Law

Adrian Ka-Wai Chung, Kelvin Ka-Ho Lam, Anna Liu, Nicolas Yunes

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Dirichlet walls and the end of time

Hanako Helton, Gary T. Horowitz, Donald Marolf

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Searching for a waveform-agnostic gravitational wave signal in pulsar timing arrays

Heling Deng, Bence Becsy, Yuri Levin, Neil J. Cornish, Xavier Siemens

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Axions Create Singularities on Extremal Horizons

Gary T. Horowitz, Maciej Kolanowski, Grant N. Remmen, Jorge E. Santos

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Donutization Inside Neutron Stars: Shell-Localized Scalar Fields

Hao-Jui Kuan, Alan Tsz-Lok Lam, Jacquelyn Noronha-Hostler, Nicolás Yunes

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Reversible-jump MCMC reveals binary black hole subpopulations with distinct redshift evolution

April Qiu Cheng, Alexandre Toubiana, Sylvia Biscoveanu, Jonathan Gair

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Investigating the formation channel of GW231123: Population III stars or hierarchical mergers?

Federico Angeloni, Konstantinos Kritos, Raffaella Schneider, Emanuele Berti, Luca Graziani, Stefano Torniamenti, Michela Mapelli, Ataru Tanikawa

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Predicting intermediate-mass black hole formation in star clusters with machine learning

Konstantinos Kritos, Digvijay Wadekar, Emanuele Berti

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The third wheel: ringdown and lensing of triple systems

Vitor Cardoso, Giuseppe Ficarra, Jaime Redondo-Yuste, João Sieiro dos Santos

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Discovery of Interpretable Surrogates via Agentic AI: Application to Gravitational Waves

Tousif Islam, Digvijay Wadekar, Tejaswi Venumadhav, Matias Zaldarriaga, Ajit Kumar Mehta, Javier Roulet, Barak Zackay

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Metric Reconstruction for Generic Black-Hole Perturbations

Dongjun Li, Nicolás Yunes

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End-to-End Population Inference from Gravitational-Wave Strain using Transformers

Konstantin Leyde, Stephen R. Green, Maximilian Dax, Matthew Mould, Cecilia Maria Fabbri, Jonathan Gair

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The Good, the Bad, and the Subtle: Relativistic mode sums for neutron-star tidal response

Abhishek Hegade K. R., K.J. Kwon, Tejaswi Venumadhav, Hang Yu, Nicolas Yunes

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Non-radial pulsations of gravitationally coupled two-fluid neutron stars in general relativity

Ankit Kumar, Daniel A. Caballero, Hajime Sotani, Nicolás Yunes

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Gravitational electric-magnetic duality at the light ring and quasinormal mode isospectrality in effective field theories

Ibrahima Bah, Emanuele Berti, Valerio De Luca, Bogdan Ganchev, David Pereñiguez

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Finding the one: identifying the host of compact binary mergers

Alberto Salvarese, Hsin-Yu Chen, Daniel E. Holz

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Agnostically decoding gravitational wave model deficiencies in GWTC-3

Guillaume Dideron, Suvodip Mukherjee, Luis Lehner

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Pre-localization of Massive Black Hole Binaries in the Millihertz Band

Xue-Ting Zhang, Jonathan Gair, Chris Messenger, Natalia Korsakova, Yi-Ming Hu, Hong-Yu Chen

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A New Spin on Dissipative Tides: First-Post-Newtonian Effects in Compact Binary Inspirals

Anand Balivada, Abhishek Hegade K. R., Nicolás Yunes

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Beyond Three Terms: Continued Fractions for Rotating Black Holes in Modified Gravity

Georgios Karikos, Jayana A. Saes, Pratik Wagle, Nicolás Yunes

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Novel ringdown tests of general relativity with black hole greybody factors

Romeo Felice Rosato, Francesco Crescimbeni, Sophia Yi, Emanuele Berti, Paolo Pani

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Las Cumbres Observatory Gravitational-Wave Follow-up in O3 and O4: Strengths and Weaknesses of a Rapid Response Galaxy Targeted Strategy

Nihar Gupte, M. Coleman Miller, Rhiannon Udall, Sophie Bini, Alessandra Buonanno, Jonathan Gair, Aldo Gamboa, Lorenzo Pompili, Antoni Ramos-BuadesIdo Keinan, Iair Arcavi, D. Andrew Howell, Curtis McCully, Craig Pellegrino, Ayelet Hasson, Moira Andrews, Jamison Burke, Daichi Hiramatsu, Jennifer Barnes, Sukanya Chakrabarti, Joseph R. Farah, Paul J. Groot, Na’ama Hallakoun, Daniel Holz, Saurabh W. Jha, Daniel Kasen, Chris Lidman, Michael J. Lundquist, Dan Maoz, Brian D. Metzger, Ehud Nakar, Megan Newsome, Yuan Qi Ni, Alexander H. Nitz, Estefania Padilla Gonzalez, Tsvi Piran, Dovi Poznanski, Ryan Ridden-Harper, David J. Sand, Brian P. Schmidt, Giacomo Terreran, Brad E. Tucker, Stefano Valenti, J. Craig Wheeler, Samuel Wyatt, Kathryn Wynn, Maximilian Dax, Stephen R. Green, Annalena Kofler, Jakob Macke, Bernhard Schölkopf

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Axial Oscillations of Viscous Neutron Stars

Sofía Bussières, Jaime Redondo-Yuste, José Javier Ortega Gómez, Vitor Cardoso

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Ringing of rapidly rotating black holes in effective field theory

Tom van der Steen, Simon Maenaut, Stef J. B. Husken, Pedro G. S. Fernandes, Maxim D. Jockwer, Vitor Cardoso, Thomas Hertog, Tjonnie G. F. Li

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Not too close! Evaluating the impact of the baseline on the localization of binary black holes by next-generation gravitational-wave detectors

Francesco Iacovelli, Luca Reali, Emanuele Berti, Alessandra Corsi, B. S. Sathyaprakash, Digvijay Wadekar

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GW190711_030756 and GW200114_020818: astrophysical interpretation of two asymmetric binary black hole mergers in the IAS catalog

Tousif Islam, Tejaswi Venumadhav, Digvijay Wadekar, Ajit Kumar Mehta, Javier Roulet, Jonathan Mushkin, Mark Ho-Yeuk Cheung, Barak Zackay, Matias Zaldarriaga

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Matching Tidal Deformability (Wilson) Coefficients to Black Hole Love Numbers in Higher-Curvature Gravity

Luohan Wang, Luis Lehner, Maitá Micol, Riccardo Sturani

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Quadratic gravity corrections to scalar QNMs of rapidly rotating black holes

Stef J. B. Husken, Tom van der Steen, Simon Maenaut, Kelvin Ka-Ho Lam, Maxim D. Jockwer, Adrian Ka-Wai Chung, Thomas Hertog, Tjonnie G. F. Li, Nicolás Yunes

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Eccentricity constraints disfavor single-single capture in nuclear star clusters as the origin of all LIGO-Virgo-KAGRA binary black holes

Nihar Gupte, M. Coleman Miller, Rhiannon Udall, Sophie Bini, Alessandra Buonanno, Jonathan Gair, Aldo Gamboa, Lorenzo Pompili, Antoni Ramos-Buades, Maximilian Dax, Stephen R. Green, Annalena Kofler, Jakob Macke, Bernhard Schölkopf

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Why Stellar Sequences Turn Over: Fixed Points, Instability, and Equation-of-State Universality

Isaac Legred, Nicolas Yunes

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Dynamical tidal response of neutron stars as a probe of dense-matter properties

Abhishek Hegade K. R., Yumu Yang, Mauricio Hippert, Jacquelyn Noronha-Hostler, Jorge Noronha, Nicolás Yunes

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Non parametric constraints of gravitational-electromagnetic luminosity distance ratio

Sergio Andrés Vallejo-Peña, Antonio Enea Romano, Jonathan Gair

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Reducing cosmological degeneracies by combining multiple classes of LISA gravitational-wave standard sirens

Danny Laghi, Nicola Tamanini, Alberto Sesana, Jonathan Gair, Enrico Barausse, Chiara Caprini, Walter Del Pozzo, Alberto Mangiagli, Sylvain Marsat

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Accurate and efficient simulation-based inference for massive black-hole binaries with LISA

Alice Spadaro, Jonathan Gair, Davide Gerosa, Stephen R. Green, Riccardo Buscicchio, Nihar Gupte, Rodrigo Tenorio, Samuel Clyne, Michael Pürrer, Natalia Korsakova

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Sensitivity of neutron star observables to microscopic nuclear parameters of realistic equations of state

Nikolas Cruz-Camacho, Carlos Conde-Ocazionez, Veronica Dexheimer, Jacquelyn Noronha-Hostler, Nicolás Yunes

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Impact of numerical-relativity waveform calibration on parametrized post-Einsteinian tests

Simone Mezzasoma, Carl-Johan Haster, Nicolás Yunes

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Hankel low-rank matrix approximation for gravitational-wave data analysis

Nicholas Geissler, Vladimir Strokov, Christian Kümmerle, Sergey Kushnarev, Emanuele Berti

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A unified harmonic framework for dark siren cosmology

April Qiu Cheng, Jonathan Gair

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Gravitational Wave Measurement of the Mbh-Mbulge Intrinsic Scatter at High Redshift

Neil J. Cornish, et al.

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Inspirals into bosonic dark matter stars and chirp mimickers

Caio F. B. Macedo, Haroldo C. D. Lima, Raissa F. P. Mendes, Rodrigo Vicente, Vitor Cardoso

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Chaos and fractals of the black hole photon ring

Roman Berens, Peter Galison, Trevor Gravely, Alexandru Lupsasca, Leo C. Stein

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Black Hole Vision: An Interactive iOS Application for Visualizing Black Holes

Roman Berens, Dominic O. Chang, Trevor Gravely, Alexandru Lupsasca

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Searching for precessing binary systems with mode-by-mode filtering and marginalization

Zihan Zhou, Digvijay Wadekar, Javier Roulet, Oryna Ivashtenko, Tejaswi Venumadhav, Tousif Islam, Ajit Kumar Mehta, Jonathan Mushkin, Mark Ho-Yeuk Cheung, Barak Zackay, Matias Zaldarriaga

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Nonlinear Dynamics in General Relativity

Vitor Cardoso, Jaime Redondo-Yuste, Ulrich Sperhake, Furkan Tuncer

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Single-minus graviton tree amplitudes are nonzero

Alfredo Guevara, Alexandru Lupsasca, David Skinner, Andrew Strominger, Kevin Weil

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Modified Teukolsky formalism: Null testing and numerical benchmarking

Fawzi Aly, Mahmoud A. Mansour, Luis Lehner, Dejan Stojkovic, Dongjun Li, Pratik Wagle

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Single-minus gluon tree amplitudes are nonzero

Alfredo Guevara, Alexandru Lupsasca, David Skinner, Andrew Strominger, Kevin Weil

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Modern tidal interaction models for rapid binary population synthesis: I. Methods

Veome Kapil, Ilya Mandel, Evgeni Grishin, Jim Fuller, Jeff Riley, Emanuele Berti

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Systematic biases in parameter estimation on LISA binaries. II. The effect of excluding higher harmonics for spin-aligned, high-mass binaries

Sophia Yi, Francesco Iacovelli, Emanuele Berti, Rohit s. Chandramouli, Sylvain Marsat, Digvijay Wadekar, Nicolás Yunes

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deci-Hz Gravitational Wave Observations on the Moon and Beyond

Emanuele Berti, Marica Branchesi, Alessandra Buonanno, Alessandra Corsi, Daniel J. D’Orazio, Jan Harms, Jason M. Hogan, Francesco Iacovelli, Karan Jani, Marc Kamionkowski, Kentaro Komori, Konstantinos Kritos, Andrea Maselli, M. Coleman Miller, Chiara M. F. Mingarelli, Voker Quetschke, B. s. Sathyaprakash, Danvid H. Shoemaker, Joseph Silk, Jacob P. Slutsky, James Ira Thorpe, James Trippe, Daniele Vetrugno, Stefano Vitale

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From cosmological simulations to binary black hole mergers: The impact of using analytical star formation history models on gravitational-wave source populations

Sasha Levina, floor Broekgaarden, Lieke van Son, Emanuele Berti, Amedeo Romagnolo, Ruediger Pakmor, Ana Lam

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The relativistic restricted three-body problem: geometry and motion around tidally perturbed black holes

Takuya Katagiri and Vitor Cardoso

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Sample-efficient non-Gaussian noise reduction in Gravitational wave data via learnable wavelets

Arush Pimpalkar, Digvijay Wadekar, Mark Ho-Yeuk Cheung, Emanuele Berti

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Spinning Black Holes in Modified Gravity via Spectral Methods

Kelvin Ka-Ho Lam, Adrian Ka-Wai Chung, Nicolás Yunes

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Gravitational lensing rarely produces high-mass outliers to the compact binary population

Amanda M. Farah, Jose María Ezquiaga, Maya Fishbach, Daniel E. Holz

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False positive control in time series coincidence detection

Ruiting Liang, Samuel Dyson, Rina Foygel Barber, Daniel E. Holz

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Analytic and accurate approximate metrics for black holes with arbitrary rotation in beyond-Einstein gravity using spectral methods

Kelvin Ka-Ho Lam, Adrian Ka-Wai Chung, Nicolás Yunes

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A relativistic treatment of accretion disk torques on extreme mass ratio inspirals around spinning black holes

Abhishek Hegade K., Charles F. Gammie, Nicolás Yunes

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Resonances in b-EMRIs: playing the black hole piano

Joao S. Santos, Vitor Cardoso, Alexandru Lupsasca, Jose Natario, Maarten van de Meent

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Previous Publications

2025

A cosmologist’s take on Little Red Dots

Valerio De Luca, Loris Del Grosso, Gabriele Franciolini, Konstantinos Kritos, Emanuele Berti, Daniel D’Orazio, Joseph Silk

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Generalized Couch–Torrence inversions

Panagiotis Charalambous, Laura Donnay, Alexandru Lupsasca

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Quasinormal modes of rotating black holes beyond general relativity in the WKB approximation

Ruijing Tang, Nicola Franchini, Sebastian H. Völkel, Emanuele Berti

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Stellar Superradiance and Low-Energy Absorption in Dense Nuclear Media

Zhaoyu Bai, Vitor Cardoso, Yifan Chen, Yuyan Li, Jamie I. McDonald, Hyeonseok Seong

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Restrictions on Initial Conditions in Cosmological Scenarios and Implications for Simulations of Primordial Black Holes and Inflation

Thomas W. Baumgarte, Katy Clough, John T. Giblin, Jr.

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Binary black hole population inference combining confident and marginal events
from the IAS-HM search pipeline

Ajit Kumar Mehta, Digvijay Wadekar, Isha Anantpurkar, Javier Roulet, Tejaswi Venumadhav, Tousif Islam, Jonathan Mushkin, Barak Zackay, Matias Zaldarriaga

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Cosmology of Gravi-Axions

Stephon Alexander, Gregory Gabadadze, Leah Jenks, Nicolás Yunes

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Universal Relations with Dynamical Tides

Jayana Antunes Saes de Lima, Abhishek Hegade K. R., Nicolás Yunes

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Black hole binaries in shift-symmetric Einstein-scalar-Gauss-Bonnet gravity experience
a slower merger phase

Maxence Corman, Llibert Aresté Saló, Katy Clough

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The Physics of Black Holes and Their Environments: Consequences for Gravitational Wave Science

Vitor Cardoso, Shauvik Biswas, Subhodeep Sarkar

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Generating optimal Gravitational-Wave template banks with metric-preserving autoencoders

Giovanni Cabass, Digvijay Wadekar, Matias Zaldarriaga, Zihan Zhou

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Effects of Lighter-than-QCD Axions on Neutron Star Tidal Deformability

Yonatan Kahn, Michael Wentzel, Nicolás Yunes

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Clustering effects on the Dark Siren determination of H0: A simulation study

Marios Kalomenopoulos, Riccardo Barbieri, Sadegh Khochfar, Jonathan Gair, Robert J. McGibbon

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Non-stationary noise in gravitational wave analyses: The wavelet domain noise covariance matrix

Neil J. Cornish

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Gravitational Atoms from Topological Stars

Ibrahima Bah, Emanuele Berti, Bogdan Ganchev, David Pereñiguez, Nicholas Speeney

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How Low Can You Go: Constraining the Effects of Catalog Incompleteness on Dark Siren Cosmology

Madison VanWyngarden, Maya Fishbach, Aditya Vijaykumar, Alexandra G. Guerrero, Daniel E. Holz

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Numerical simulations of Scalar Dark Matter Around Binary Neutron Star mergers

Rohan Srikanth, Tim Dietrich, Katy Clough

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Frozen Firewall: Generic Singularity Formation on an Extremal Horizon

Gary T. Horowitz, Maciej Kolanowski, Jorge E. Santos

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Scalar fields around black hole binaries in LIGO-Virgo-KAGRA

Soumen Roy, Rodrigo Vicente, Josu C. Aurrekoetxea, Katy Clough, Pedro G. Ferreira

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A relativistic treatment of accretion disk torques on extreme mass ratio inspirals around spinning black holes

Abhishek Hegade K.R., Charles F. Gammie, Nicolás Yunes

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Neural Post-Einsteinian Test of General Relativity with the Third Gravitational-Wave Transient Catalog

Yiqi Xie, Gautham Narayan, Nicolás Yunes

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Data-driven extraction and phenomenology of eccentric harmonics in eccentric spinning binary black hole mergers

Tousif Islam, Tejaswi Venumadhav, Ajit Kumar Mehta, Digvijay Wadekar, Javier Roulet, Isha Anantpurkar, Jonathan Mushkin, Barak Zackay, Matias Zaldarriaga

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Black holes black out: total absorption in time-dependent scattering

Furkan Tuncer, Vitor Cardoso, Rodrigo Panosso Macedo, Thomas F.M. Spieksma

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