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Elbereth conference 2025

9–11 avr. 2025
Observatoire de Paris - Site de Meudon
Fuseau horaire Europe/Paris

Elbereth team

Session

Session 3

9 avr. 2025, 14:30
Amphithéâtre Evry Schatzman (Observatoire de Paris - Site de Meudon)

Amphithéâtre Evry Schatzman

Observatoire de Paris - Site de Meudon

Observatoire de Paris - Site de Meudon 5, place Jules Janssen 92195 MEUDON

Documents de présentation

Aucun document.

  1. 61. Diagnosing Systematic Effects Using the Inferred Initial Power Spectrum
    Tristan Hoellinger (Institut d'Astrophysique de Paris)
    09/04/2025 14:30
    Astrophysics
    Oral presentation

    The next generation of galaxy surveys has the potential to significantly deepen our understanding of the Universe, though this potential hinges on our ability to rigorously address systematic uncertainties. This was previously beyond reach in field-based implicit likelihood cosmological inference frameworks. We aim at inferring the initial matter power spectrum after recombination to diagnose...

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  2. 91. A catalog of high significance cosmic voids
    Rosa Malandrino (Institut d'Astrophysique de Paris)
    09/04/2025 14:45
    Astrophysics
    Oral presentation

    Cosmic voids are the largest objects emerging in the cosmic web, covering the majority of the volume of the Universe. They are a well-established probe to gather cosmological information from the large-scale structure, as well as interesting regions to study how an underdense environment affects the behaviour of astrophysical objects. Unfortunately, identifying voids from galaxy surveys is a...

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  3. 75. Non-transiting exoplanets as a means to understand star-planet interactions in close-in systems
    Clémence Gourvès (AIM-CEA Saclay)
    09/04/2025 15:00
    Astrophysics
    Oral presentation

    Since 1995, more than 5,000 exoplanets have been discovered, largely thanks to the transit detection method. However, most exoplanetary systems do not exhibit transits, limiting this method to detecting only about 10% of existing exoplanets. To gain a more comprehensive understanding of exoplanet populations, alternative detection approaches are needed.
    One particularly intriguing trend in...

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  4. 64. A catalog of stellar magnetic fields for exoplanet radio emission predictions
    Quentin Duchêne (LIRA, Observatoire de Paris)
    09/04/2025 15:15
    Astrophysics
    Oral presentation

    In the Solar system, planetary radio emission is strongly correlated to incident magnetic power (similar to the Poytning flux). To test this observational law in other stellar systems, and use it to determine interesting observation targets, we need to get an estimation of the stellar magnetic field of the host stars.
    Here, we work on the compilation of measures of stellar magnetic fields...

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