Black Hole Perturbation Toolkit
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Black Hole Perturbation Toolkit
@bhptoolkit.bsky.social
The Black Hole Perturbation Toolkit brings together software and data relating to black hole perturbation theory. http://bhptoolkit.org.

An extensive list of papers that have used the BHPToolkit can be found here: https://bhptoolkit.org/users.html
Recent paper the cites the BHPToolk: "A-BHPT-toolkit: Analytic Black Hole Perturbation Theory Package for Gravitational Scattering Amplitudes" by Jovan Markovic, Mikhail M. Ivanov, arxiv.org/abs/2511.04765
November 10, 2025 at 1:50 PM
Paper on the arXiv today that cites the BHPToolkit: "Eccentric extreme-mass-ratio inspirals: a new window into ultra-light vector fields" by Tieguang Zi, Fu-Wen Shu, arxiv.org/abs/2510.22275
October 28, 2025 at 3:18 PM
Recent paper the cites the BHPToolkit: "Ab uno disce omnes: Single-harmonic search for extreme mass-ratio inspirals" by Lorenzo Speri, Rodrigo Tenorio, Christian Chapman-Bird, Davide Gerosa, arxiv.org/abs/2510.20891
October 28, 2025 at 3:17 PM
Three papers from the Multiscale Self-Force (MSF) collaboration on the arXiv yesterday that made use of the BHPToolkit. The first was "Spin-aligned inspiral waveforms from self-force and post-Newtonian theory" by Loïc Honet et al. arxiv.org/abs/2510.16112
October 22, 2025 at 10:22 AM
Recent paper that cites the BHPToolkit: "Black hole mergers beyond general relativity: a self-force approach" by Ayush Roy, Lorenzo Küchler, Adam Pound, Rodrigo Panosso Macedo, arxiv.org/abs/2510.11793
October 18, 2025 at 11:16 AM
Paper on the arXiv today that uses the BHPToolkit: "Transition-to-plunge self-force waveforms with a spinning primary" by Loïc Honet, Lorenzo Küchler, Adam Pound, Geoffrey Compère, arxiv.org/abs/2510.13958
October 17, 2025 at 9:50 AM
Recent paper the cites the BHPToolkit: "Hybridization of second-order gravitational self-force and numerical relativity waveforms for quasi-circular and non-spinning black hole binaries" by Hector Iglesias, Leanne Durkan, Deirdre Shoemaker, arxiv.org/abs/2510.11685
October 16, 2025 at 3:15 PM
Paper on the arXiv today that cites the BHPToolkit: "Particles with precessing spin in Kerr spacetime: analytic solutions for eccentric orbits and homoclinic motion near the equatorial plane" by Gabriel Andres Piovano, arxiv.org/abs/2510.09597
October 13, 2025 at 3:38 PM
Paper on the arXiv today that cites the BHPToolkit: "A relativistic treatment of accretion disk torques on extreme mass ratio inspirals around spinning black holes" by Abhishek Hegade K.R., Charles F. Gammie, Nicolás Yunes, arxiv.org/abs/2510.03564
October 7, 2025 at 9:02 AM
Recent paper the cites the BHPToolkit: "Consistency of spin effects between numerical relativity and perturbation theory for inspiraling comparable-mass black hole binaries" by Tousif Islam, Gaurav Khanna, Scott E. Field, arxiv.org/abs/2510.00531
October 3, 2025 at 9:42 AM
Recent paper that cites the BHPToolkit: "A relativistic treatment of accretion disk torques on extreme mass-ratio inspirals around non-spinning black holes" by Abhishek Hegade K. R., Charles F. Gammie, Nicolás Yunes, arxiv.org/abs/2509.20457
September 29, 2025 at 9:31 AM
Recent paper the cites the BHPToolkit: "Systematic errors in fast relativistic waveforms for Extreme Mass Ratio Inspirals" by Hassan Khalvati, Philip Lynch, Ollie Burke, Lorenzo Speri, Maarten van de Meent, Zachary Nasipak, arxiv.org/abs/2509.08875
September 16, 2025 at 8:33 AM
We are please to announce the release of a new Mathematica package for computing quasi-normal modes. The new QNM package can be found here: bhptoolkit.org/QNM-Mathemat.... The package computes both the QNM frequencies and the associated radial functions.
September 15, 2025 at 9:40 AM
Recent paper the cites the BHPToolkit: "Resonance in black hole ringdown: Benchmarking quasinormal mode excitation and extraction" by Kei-ichiro Kubota, Hayato Motohashi, arxiv.org/abs/2509.06411
September 13, 2025 at 9:16 PM
arXiv paper today that cites the BHPToolkit: "Prospects for EMRI/MBH parameter estimation using Quasi-Periodic Eruption timings: short-timescale analysis" by Joheen Chakraborty et al. arxiv.org/abs/2508.20162
August 29, 2025 at 11:16 AM
Recent paper the cites the BHPToolkit: "Emergent Turbulence in Nonlinear Gravity" by Sizheng Ma, Luis Lehner, Huan Yang, Lawrence E. Kidder, Harald P. Pfeiffer, Mark A. Scheel, arxiv.org/abs/2508.13294
August 21, 2025 at 8:16 PM
ArXiv paper today that cites the BHPToolkit: "Effective source for second-order self-force calculations: quasicircular orbits in Schwarzschild spacetime" by Samuel D. Upton, Barry Wardell, Adam Pound, Niels Warburton, Leor Barack, arxiv.org/abs/2508.00087
August 4, 2025 at 4:43 AM
Recent paper that cites the BHPToolkit: "Gravitational Wave Peep Contributions to Background Signal Confusion Noise for LISA" by Daniel J Oliver, Aaron D Johnson, Lena Janssen, Joel Berrier, Kostas Glampedakis, Daniel Kennefick, arxiv.org/abs/2507.19704
August 3, 2025 at 5:12 AM
Recent paper the cites the BHPToolkit: "Towards relativistic inspirals into black holes surrounded by matter" by Lukáš Polcar, Vojtěch Witzany, arxiv.org/abs/2507.15720
August 3, 2025 at 5:09 AM
Recent paper the cites the BHPToolkit: "A New High-Performing Method for Solving the Homogeneous Teukolsky Equation" by Ye Jiang, Wen-Biao Han, arxiv.org/abs/2507.15363
August 3, 2025 at 5:07 AM
Recent paper the cites the BHPToolkit: "Post-adiabatic waveforms from extreme mass ratio inspirals in the presence of dark matter" by Mostafizur Rahman, Takuya Takahashi, arxiv.org/abs/2507.06923
August 3, 2025 at 5:06 AM
Recent paper that cites the BHPToolkit: "Post-Newtonian expansion of fluxes from a scalar charge on an inclined-spherical orbit about a Kerr black hole" by Jezreel C. Castillo, Charles R. Evans, Chris Kavanagh, Jakob Neef, Barry Wardell, Adrian Ottewill, arxiv.org/abs/2507.07303
August 3, 2025 at 5:03 AM
Recent paper that cites the BHPToolkit: "Peaking into the abyss: Characterizing the merger of equatorial-eccentric-geodesic plunges in rotating black holes" by Guglielmo Faggioli, Maarten van de Meent, Alessandra Buonanno, Gaurav Khanna, arxiv.org/abs/2507.05870
August 3, 2025 at 5:02 AM
Recent arXiv paper the cites the BHPToolkit: "Spherical inspirals of spinning bodies into Kerr black holes" by Viktor Skoupý, Gabriel Andres Piovano, Vojtěch Witzany, arxiv.org/abs/2506.20726
June 29, 2025 at 7:51 AM
arXiv paper the cites the BHPToolkit: "Complete quasinormal modes of Type-D black holes" by Changkai Chen, Jiliang Jing, Zhoujian Cao, Mengjie Wang, arxiv.org/abs/2506.14635
June 21, 2025 at 11:24 AM