Test of Gravity Theories II

Presentations

• Fundamental Aspects of the Early Ringdown

  ORAL

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

  Presenters

  • Andrew Laeuger

    • Caltech
    • California Institute of Technology

  Authors

  • Andrew Laeuger

    • Caltech
    • California Institute of Technology

  • Yanbei Chen

    • Caltech

  • Colin Weller

    • Caltech

  View abstract →

• GW231123 ringdown: interpretation as multimodal Kerr signal

  ORAL

  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

    • Perimeter Institute

  Authors

  • Harrison Siegel

    • Perimeter Institute

  • Nicole Melissa Khusid

    • University of Connecticut

  • Maximiliano Isi

    • Simons Foundation (Flatiron Institute)

  • Will Meierjurgen Farr

    • Stony Brook University (SUNY)

  View abstract →

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

  ORAL

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

  Presenters

  • Mark Ho-Yeuk Cheung

    • Johns Hopkins University
    • Institute for Advanced Study

  Authors

  • Mark Ho-Yeuk Cheung

    • Johns Hopkins University
    • Institute for Advanced Study

  • Jaime Redondo-Yuste

    • Niels Bohr Institute

  View abstract →

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

  ORAL

  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

    • Radboud University

  Authors

  • Badri Krishnan

    • Radboud University

  • Nishkal Rao

    • IISER Pune

  • Jahed Abedi

    • Beijing Institute for Mathematical Sciences and Applications

  • Collin Capano

    • Syracuse University

  View abstract →

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

  ORAL

  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 G. Wu

    • University of Texas at Austin

  Authors

  • David G. Wu

    • University of Texas at Austin

  • Asad Hussain

    • Flatiron Institute
    • University of Texas at Austin

  • Aaron Zimmerman

    • University of Texas at Austin

  View abstract →

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

  ORAL

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

  Presenters

  • Vaishak Prasad

    • International Centre for Theoretical Science, (TIFR)
    • The Pennsylvania State University

  Authors

  • Vaishak Prasad

    • International Centre for Theoretical Science, (TIFR)
    • The Pennsylvania State University

  View abstract →

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

  ORAL

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

  Presenters

  • Asad Hussain

    • Flatiron Institute
    • University of Texas at Austin

  Authors

  • Asad Hussain

    • Flatiron Institute
    • University of Texas at Austin

  • Maximiliano Isi

    • Simons Foundation (Flatiron Institute)

  • Aaron Zimmerman

    • University of Texas at Austin

  View abstract →

• Gravitational turbulence in spacetimes with stable light rings

  ORAL

  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

  View abstract →

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

  ORAL

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

  Presenters

  • Brian C Seymour

    • Niels Bohr Institute

  Authors

  • Brian C Seymour

    • Niels Bohr Institute

  • Agla Þórarinsdóttir

    • University of Cambridge

  • Yanbei Chen

    • Caltech

  View abstract →