Dr. Ofek Birnholtz is the PI of Bar-Ilan's LIGO group, as part of the international LIGO Scientific Collaboration, with a focus on studying Gravitational Waves, and through them Astrophysical systems of Black Holes, Neutron Stars, and phenomena in General Relativity, and beyond.

• Yehu I. Maimon, Alex B. Nielsen, Ofek Birnholtz, "Constraining Dirty Black Holes and pseudo-complex General Relativity with the Gravitational Waves Transient Catalog 3.0", https://arxiv.org/abs/2505.10199

• Daniel Rozental, Ofek Birnholtz, "κ-General-Relativity II: An Astrophysical Observable from a 2-Body system", https://arxiv.org/abs/2504.18669

• Yogesh Dandekar, Barak Kol, "Distribution of regularized three-body phase-volume", https://www.arxiv.org/abs/2501.02013

• E. D. Emtsova, A. N. Petrov, A. V. Toporensky, "Mass and angular momentum for the Kerr black hole in TEGR and STEGR", https://arxiv.org/abs/2409.10529

• Daniel Rozental, Ofek Birnholtz, "κ-General-Relativity I: a Non-Commutative GR Theory with the κ-Minkowski Spacetime as its Flat Limit", https://arxiv.org/abs/2408.11955

• Elise M. Sänger, Soumen Roy, Michalis Agathos, Ofek Birnholtz et al., "Tests of General Relativity with GW230529: a neutron star merging with a lower mass-gap compact object", https://arxiv.org/abs/2406.03568