Journée LISA France

Session

Session 3

Nov 20, 2023, 4:20 PM

Salle de l'Espace (CNES Paris Les Halles)

6. Extreme mass-ratio inspirals to probe modified gravitational-wave propagation and LCDM

Danny Laghi (CNES, L2I Toulouse, CNRS/IN2P3, UT3)

11/20/23, 4:20 PM

Extreme mass-ratio inspirals (EMRIs) are one of the most important sources of gravitational waves (GWs) that will be detected by LISA. Similar to compact binary mergers detected by current GW detectors, EMRIs can be used as cosmic rulers to probe the expansion of the Universe and our current cosmological paradigm, the $\Lambda$CDM model. Modified gravity theories can affect the propagation of...

7. Le SL-OGSE, instrument dédié à la mesure de la lumière parasite au niveau système

Amaël Roubeau-Tissot (Laboratoire ARTEMIS, Observatoire Côte d'Azur), Michel Lintz (ARTEMIS / Observatoire de la Côte d'Azur)

11/20/23, 4:40 PM

La mesure de la lumière parasite est un enjeu de premier plan dans
l'intégration de tout interféromètre. C'est le cas des interféromètres
dédiés à la géodésie spatiale, et bien sûr des interféromètres de la
mission LISA. Le "SL-OGSE" a été conçu pour mesurer la lumière parasite
cohérente au niveau système, en fin d'intégration du MOSA. Cette
présentation décrira ses fonctions et donnera...

5. An L0L2 demonstrator pipeline for LISA

Marc Lilley (SYRTE, Observatoire de Paris)

11/20/23, 5:00 PM

I will describe the L0-to-L2 demonstration pipeline developed in order to address the FMT task 4.5 activity of LISA. The main goal of this activity is to show that it is possible to build a complete data analysis pipeline capable of generating L1 and L2 products from L0.5 data. The L0.5 to L1 step mainly includes on-ground processing that performs noise reduction, calculates pseudo-range...

14. Astrophysical Uncertainties in the Gravitational-Wave Background from Stellar-Mass Compact Binary Coalescences

Léonard LEHOUCQ (Institut d'Astrophysique de Paris)

11/20/23, 5:20 PM

The astrophysical Stochastic gravitational-wave backgrounds (SGWB) results from the superposition of numerous individually unresolved gravitational-wave (GW) signals. In this talk, I will present different ways of modelling the populations of stellar-mass compact binary coalescence (CBC) that source this background. I will discuss the use of population synthesis models to estimate the expected...