Alexandre Le Tiec
Lab. Univers et Théories (LUTH), Obs. Paris-Meudon-Nancay (Meudon, France)
Amphithéâtre Henri Mineur, Institut d'Astrophysique de Paris
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| « Gravitational waves from binary systems of compact objects » |
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Alexandre Le Tiec |
| I will start by giving an overview of the main scientific results since the beginning of the gravitational-wave era, including the discovery of intermediate-mass black holes, the birth of multi-messenger astronomy, the first tests of gravitation theory in the strong-field regime, an independent measure of the Hubble constant, and constraints on the equation of state of matter at supra-nuclear density. During its last observing run, however, the LIGO-Virgo-KAGRA Collaboration has begun to detect gravitational-wave candidates, such as GW191219_163120, whose large mass ratios are extremely challenging for waveform modelling. This might result in systematic uncertainties in the estimation of the source parameters, including the mass ratio, inclination and luminosity distance. As a potential solution I will present a new, promising class of waveforms that could faithfully model such challenging gravitational-wave sources. |
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vendredi 28 janvier 2022 - 11:00 Amphithéâtre Henri Mineur, Institut d'Astrophysique de Paris |
| Page web du séminaire / Seminar's webpage |