Is Time Travel Possible?

The laws of physics allow time travel. So why haven’t people become chronological hoppers?

https://www.scientificamerican.com/article/is-time-travel-possible/

Aretakis Hair for Extreme Kerr Black Holes with Axisymmetric Scalar Perturbations

Lior M. Burko, Gaurav Khanna, Subir Sabharwal

arXiv:2304.06210 (2023)

pySEOBNR: a software package for the next generation of effective-one-body multipolar waveform models

Deyan P. Mihaylov, Serguei Ossokine, Alessandra Buonanno, Hector Estelles, Lorenzo Pompili, Michael Pürrer, Antoni Ramos-Buades

arXiv:2303.18203 (2023)

Laying the foundation of the effective-one-body waveform models SEOBNRv5: improved accuracy and efficiency for spinning non-precessing binary black holes

Lorenzo Pompili, Alessandra Buonanno, Héctor Estellés, Mohammed Khalil, Maarten van de Meent, Deyan P. Mihaylov, Serguei Ossokine, Michael Pürrer, Antoni Ramos-Buades, Ajit Kumar Mehta, Roberto Cotesta, Sylvain Marsat, Michael Boyle, Lawrence E. Kidder, Harald P. Pfeiffer, Mark A. Scheel, Hannes R. Rüter, Nils Vu, Reetika Dudi, Sizheng Ma, Keefe Mitman, Denyz Melchor, Sierra Thomas, Jennifer Sanchez

arXiv:2303.18039 (2023)

Here is a Quanta story featuring the research of former and current UMass Dartmouth graduate students Niranjan Roy, Vishal Tiwari, Daniel Kosakowski, and Dr. Rahul Kashyap:
https://www.quantamagazine.org/what-lights-the-universes-standard-candles-20230208/

The results featured were published in an Astrophysical Journal Letter earlier this year with Niranjan as lead author and the other current and former students as co-authors along with collaborators in Israel, the UK, and Spain.

Gravitational-wave template banks for novel compact binaries

Stefano Schmidt, Bhooshan Gadre, Sarah Caudill

arXiv:2302.00436 (2023)

Remnant black hole properties from numerical-relativity-informed perturbation theory and implications for waveform modelling

Tousif Islam, Scott E. Field, Gaurav Khanna

Preprint: arXiv:2301.07215 (2023)

Ritesh just posted his new paper on angular momentum in black hole binaries on the arXiv. The paper is collaborative work with Prof. Richard Price at MIT.

Angular Momentum for Black Hole Binaries in Numerical Relativity

Ritesh Bachhar, Richard Price, Gaurav Khanna

Preprint: arXiv:2301.01185 (2023)

Template bank for compact binary mergers in the fourth observing run of Advanced LIGO, Advanced Virgo, and KAGRA

 Shio Sakon, Leo Tsukada, Heather Fong, Chad Hanna, James Kennington, Shomik Adhicary, Kipp Cannon, Sarah Caudill, Bryce Cousins, Jolien D. E. Creighton, Becca Ewing, Patrick Godwin, Yun-Jing Huang, Rachael Huxford, Prathamesh Joshi, Ryan Magee, Cody Messick, Soichiro Morisaki, Debnandini Mukherjee, Wanting Niu, Alex Pace, Cort Posnansky, Surabhi Sachdev, Divya Singh, Ron Tapia , et al.

Preprint arXiv:2211.16674  (2022)

Adapting to noise distribution shifts in flow-based gravitational-wave inference

Jonas Wildberger, Maximilian Dax, Stephen R. Green, Jonathan Gair, Michael Pürrer, Jakob H. Macke, Alessandra Buonanno, Bernhard Schölkopf

Preprint: arXiv:2211.08801 (2022)

Statistical validation of the detection of a sub-dominant quasi-normal mode in GW190521

Collin D. Capano, Jahed Abedi, Shilpa Kastha, Alexander H. Nitz, Julian Westerweck, Yi-Fan Wang, Miriam Cabero, Alex B. Nielsen, Badri Krishnan

Preprint arXiv:2209.00640 (2022)