PIRSA:26050051 Scientific Series Strong Gravity

DOI10.48660/26050051

Series: Strong Gravity

Santoro, G. (2026). Lessons learned from GW250114: a loud signal with no Love. Perimeter Institute. https://pirsa.org/26050051

Santoro, Giada. Lessons learned from GW250114: a loud signal with no Love. Perimeter Institute, May. 14, 2026, https://pirsa.org/26050051 

@misc{ pirsa_PIRSA:26050051,
  doi = {10.48660/26050051},
  url = {https://pirsa.org/26050051},
  author = {Santoro, Giada},
  keywords = {Strong Gravity},
  language = {en},
  title = {Lessons learned from GW250114: a loud signal with no Love},
  publisher = {Perimeter Institute},
  year = {2026},
  month = {may},
  note = {PIRSA:26050051 see, \url{https://pirsa.org}}
}

Abstract

GW250114, with a signal-to-noise ratio of ∼80, enables the most precise single-event tests of strong-field gravity to date: setting the tightest constraints on deviations from general relativity, delivering the cleanest ringdown measurement yet, and placing stringent bounds on compact object structure. The one thing it withholds is Love: no tidal deformability is detected, with a 90% upper limit of $\tilde{\Lambda} < 34.8$, fully consistent with the Kerr prediction of vanishing tidal deformability.

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