Dear colleagues,

The fourth installment of the two-week workshop “New frontiers in strong gravity” will take place in Benasque, Spain, from 19–31 July 2026 at the Science Center in Benasque (https://benasque.org/new_general/cgi-bin/years.pl?ano=2026 https://urldefense.com/v3/__https://benasque.org/new_general/cgi-bin/years.pl?ano=2026__;!!DZ3fjg!9g32cx5BrYn7gFyI0VOlfXI5guLtbBvt14vI70CZG17PDB6DzZ-z-7ujvRybLEi93RRbaymAup7XZO8$) in the Spanish Pyrenees. The registration will open in Spring 2026.

The goal of the workshop is to foster new ideas and collaborations by bringing together experts across different disciplines, including gravity, gravitational wave astrophysics, numerical and mathematical relativity. We plan for only two talks per day, with ample time for informal discussions, sessions and collaborations. We aim at creating a diverse and inclusive meeting that thrives through communication and discussion, and we would greatly welcome participation and contributions from different communities, as well as researchers at different career stages.

Topics planned for this installment include:

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Precision GW modeling

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Future GW facilities

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New detector proposals (atom IFOs, lunar, high frequency, deciHz, μHz) and sources

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Future data analysis

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Tests of beyond-GR

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Cosmology

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PBHs/Memory Burden

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Formal mathematical relativity, perturbative methods (PN, PM)

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Memory, tails, other soft effects

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Analog gravity

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Environmental effects (dark matter halos, accretion disks)

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Scattering and Amplitudes

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Developments in quantum gravity

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New developments in NR / GPU computing

We would appreciate it if you could kindly note the dates if you plan to attend and forward the announcement to interested researchers in our field.

We look forward to welcoming you to Benasque.

On behalf of the organisers (D. Blas, P. Figueras, S. Nissanke, L. Stein, H. Witek)

--------------------------------------------- Dr. Helvi Witek Associate Professor Department of Physics University of Illinois at Urbana-Champaign

247 Loomis Lab 1110 W Green St Urbana, IL 61801 ---------------------------------------------