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Robert Svarc, Charles University, Institute for Theoretical Physics, Prague, CZ, May 20–May 23, 2025
Talk: ,
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Šimon Knoška, Charles University, Prague, CZ,
Talk: Quantum imprints of gravitational shock (impulsive) waves, May 16, 2025
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Alessandra Pluda, University of Pisa, IT, Apr 23–30, 2025
Talk: “Geometric inequalities and Ricci-pinched manifolds”, Apr 29, 2025
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Stefan Suhr, Ruhr University Bochum, DE, Mar 4–21, 2025
Talk: ,
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James Grant, University of Surrey, UK, Feb 26–Mar 12, 2025
Talk: ,
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Melanie Graf, University of Hamburg, DE, Feb 24–Mar 7, 2025
Talk: ,
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Eric Ling, University of Copenhagen, DK, Jan 27–Feb 2, 2025
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James Grant, University of Surrey, UK, Dec 11–17, 2024
Talk: ,
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Giulio Sanzeni, Ruhr University Bochum, DE, Nov 19–22, 2024
Talk: Geodesic causality in Kerr spacetimes, Nov 20, 2024
Abstract
Kerr spacetimes are solutions of vacuum Einstein field equations and model the gravitational field around rotating black holes. The natural analytic extension of the Kerr spacetime over the horizons and in the negative radial region, called Kerr star, contains closed causal curves. Despite causality violations, I will sketch the proof of the nonexistence of closed null geodesics in the Kerr-star spacetime.
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Miguel Manzano, University of Salamanca, ES, Nov 10–22, 2024
Talk: ,
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