Test of Gravity Theories II

Presentations

• Fundamental Aspects of the Early Ringdown

  Oral-In-person

  March 17, 2026, 8:00 AM – March 17, 2026, 8:12 AM

  Presenters

  • Andrew Laeuger

    • Caltech

  Authors

  • Andrew Laeuger

    • Caltech

  • Yanbei Chen

    • Caltech

  • Colin Weller

    • Caltech

  View abstract →

• GW231123 ringdown: interpretation as multimodal Kerr signal

  Oral-In-person

  March 17, 2026, 8:12 AM – March 17, 2026, 8:24 AM

  Publication: Siegel et al., ''GW231123 ringdown: interpretation as multimodal Kerr signal'', in prep.

  Presenters

  • Harrison Siegel

    • Columbia University

  Authors

  • Harrison Siegel

    • Columbia University

  • Nicole Khusid

    • Stony Brook University (SUNY)

  • Maximiliano Isi

    • Simons Foundation

  • Will Farr

    • Stony Brook University (SUNY)

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• When can we claim the detection of a quasinormal mode in a black hole ringdown?

  Oral-In-person

  March 17, 2026, 8:24 AM – March 17, 2026, 8:36 AM

  Presenters

  • Mark Cheung

    • Institute for Advanced Study (IAS)

  Authors

  • Mark Cheung

    • Institute for Advanced Study (IAS)

  • Jaime Redondo-Yuste

    • Niels Bohr Institute

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• Observational evidence for quadratic quasi-normal modes in binary black hole merger events

  Oral-In-person

  March 17, 2026, 8:36 AM – March 17, 2026, 8:48 AM

  Publication: Jahed Abedi, Nishkal Rao, Badri Krishnan, Collin Capano, et al, "Observational evidence for quadratic quasi-normal modes in binary black hole merger events", In preparation

  Presenters

  • Badri Krishnan

    • Max Planck Institute for Gravitational Physics

  Authors

  • Badri Krishnan

    • Max Planck Institute for Gravitational Physics

  • Nishkal Rao

    • IISER Pune

  • Jahed Abedi

    • Beijing Institute for Mathematical Sciences and Applications

  • Collin Capano

    • Syracuse University

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• Quasinormal modes of deformed black holes: parity and isospectrality breaking

  Oral-In-person

  March 17, 2026, 8:48 AM – March 17, 2026, 9:00 AM

  Publication: D. G. Wu, A. Hussain, and A. Zimmerman, "Computing spectral shifts for Johannsen-Psaltis Black Holes." (manuscript in preparation)

  Presenters

  • David Wu

    • University of Texas at Austin

  Authors

  • David Wu

    • University of Texas at Austin

  • Asad Hussain

    • Simons Foundation

  • Aaron Zimmerman

    • University of Texas at Austin

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• Testing black holes in general relativity using their horizon areas.

  Oral-In-person

  March 17, 2026, 9:00 AM – March 17, 2026, 9:12 AM

  Presenters

  • Vaishak Prasad

    • Pennsylvania State University

  Authors

  • Vaishak Prasad

    • Pennsylvania State University

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• Forecasting constraints on the population distribution of black hole charge from binary black hole ringdown catalogs

  Oral-In-person

  March 17, 2026, 9:12 AM – March 17, 2026, 9:24 AM

  Presenters

  • Asad Hussain

    • Simons Foundation

  Authors

  • Asad Hussain

    • Simons Foundation

  • Maximiliano Isi

    • Simons Foundation

  • Aaron Zimmerman

    • University of Texas at Austin

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• Gravitational turbulence in spacetimes with stable light rings

  Oral-In-person

  March 17, 2026, 9:24 AM – March 17, 2026, 9:36 AM

  Publication: Phys. Rev. D 111, 104037, 2025 and Phys. Rev. D 111, 124009, 2025

  Presenters

  • Alejandro Cardenas-Avendano

    • Wake Forest University

  Authors

  • Alejandro Cardenas-Avendano

    • Wake Forest University

  • Jaime Redondo-Yuste

    • Niels Bohr Institute

  • Gabriele Benomio

    • Gran Sasso Science Institute

  • Frans Pretorius

    • Princeton University

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• Gravitational-wave signatures of non-violent non-locality from the ringdown

  Oral-In-person

  March 17, 2026, 9:36 AM – March 17, 2026, 9:48 AM

  Presenters

  • Brian Seymour

    • Niels Bohr Institute, University of Copenhagen

  Authors

  • Brian Seymour

    • Niels Bohr Institute, University of Copenhagen

  • Agla Þórarinsdóttir

    • University of Cambridge

  • Yanbei Chen

    • Caltech

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