-
Martin Boutelier (CNES)20/11/2023 09:00
-
M. Jean Charles DAMERY (CNES), Hong-Nga Nguyen20/11/2023 09:15
-
Astrid Lamberts (Observatoire de la Côte d'Azur)20/11/2023 09:30
-
Antoine Petiteau (CEA/IRFU/DPhP)20/11/2023 09:45
-
Benjamin Pointard (LNE-SYRTE)20/11/2023 10:00
The French activities for LISA (Laser Interferometer Space Antenna) mission include assembly, integration, validation and testing of the payload by a consortium of several partners led by CNES.
Go to contribution page
SYRTE has developed for several years a laser activity for the different tests and interferometric measures realized by the consortium. A partnership with eXail led to a major technological step in the... -
Guillaume Boileau (Laboratoire Lagrange UMR 7293, Observatoire de la Côte d'Azur)20/11/2023 10:20
In pursuit of observing a stochastic gravitational wave background (SGWB) with LISA, it is crucial to investigate the spectral separability of cosmological, astrophysical backgrounds, and galactic foreground in order to make accurate estimations.
Our objective is to determine the observability of a cosmological background, considering the predicted astrophysical background and galactic...
Go to contribution page -
Elie Leroy (DRF-IRFU)20/11/2023 10:40
In the context of the LISA mission, the fast detection and recovery of MBHB (Massive Black Hole Binaries) from the LISA data is key for both the low-latency and global analysis tasks. This is especially paramount when the data are gapped or contaminated with spuritous transients such as glitches. For that purpose, we introduce an hybrid non-parametric representation of MBHBs that combines an...
Go to contribution page -
Natalia Korsakova (APC)20/11/2023 11:00
The future space gravitational wave detector LISA (Laser Interferometer Space Antenna) will have hundreds of thousands of Galactic Binaries (GBs) constantly present in the data stream. One of the challenging tasks from the data analysis point of view will be to estimate parameters of these GBs while disentangling them from each other and from other signals present in the data. This problem is...
Go to contribution page -
M. Christophe Leponcin Lafitte, Mme Marie Christine Angonin20/11/2023 11:40
-
Mme Maude Le Jeune20/11/2023 12:10
-
Maxime VINCENT (AstroParticule et Cosmologie)20/11/2023 14:00
La contribution française (hardware) au sein du consortium LISA se trouve principalement dans le développement de bancs de test destinés à caractériser les bancs optiques au cœur de l’instrument LISA.
Pour ce faire, un ensemble de démonstrateurs ont été développés afin d’acquérir une expertise dans le domaine de l’interférométrie hétérodyne à basse fréquence, dont le banc optique de...
Go to contribution page -
Raissa Costa barroso20/11/2023 14:20
The Laser Interferometer Space Antenna (LISA) will be a space-borne gravitational wave (GW) detector to be launched in the next decade. LISA is designed to be sensitive to GWs in the mHz band and is expected to observe an unprecedented number of sources: quasi-monochromatic sources as galactic binaries (GBs), transient sources such as massive black hole binaries (MBHBs), extreme mass ratio...
Go to contribution page -
marco nardello (CNRS, OCA Artemis)20/11/2023 14:40
The now dismissed FF-OGSE was aimed at measuring the Tilt-To-Length coupling on LISA's benches. Its "active" core is the so-called FOGOB optical bench. It delivers a reference beam (REF) and an angular jittering beam (Rx), which are used to probe the longitudinal optical path length variations induced by the Rx tilt at the MOSA level. Such coupling is connected to the internal misalignments...
Go to contribution page -
Senwen Deng (APC)20/11/2023 15:00
The LISA observation band is expected to be populated with various
Go to contribution page
gravitational wave signals overlapping in time and frequency, making the
individual treatment for each source impossible.
We present a global-fit pipeline to disentangle the merging massive
black hole binaries (MBHB) and the inspiralling Galactic white dwarf
binaries (GBs) present in the simulate one-year-long LISA... -
Chantal Pitte (cea/Irfu/DPhP)20/11/2023 15:20
One of the science objectives of LISA is to probe fundamental physics. With the expected large SNR of the coalescence of SMBHB we hope to test General Relativity. Using the full IMR waveform we study the detectability of higher harmonics. With Bayesian analysis, we can discriminate models with different harmonics. Omitting harmonics not only diminishes the SNR but can also lead to biased...
Go to contribution page -
Nils Nilsson (SYRTE, Observatoire de Paris)20/11/2023 15:40
Recently, the search for departures from the symmetries of General Relativity has received significant attention in the literature. In this talk, I outline the techniques for probing the nature of spacetime symmetries using the generation stage of gravitational waves. By using a generic effective-field theory, I show our solution scheme of the modified Einstein equations and I write down the...
Go to contribution page -
Danny Laghi (CNES, L2I Toulouse, CNRS/IN2P3, UT3)20/11/2023 16:20
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...
Go to contribution page -
Amaël Roubeau-Tissot (Laboratoire ARTEMIS, Observatoire Côte d'Azur), Michel Lintz (ARTEMIS / Observatoire de la Côte d'Azur)20/11/2023 16:40
La mesure de la lumière parasite est un enjeu de premier plan dans
Go to contribution page
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... -
Marc Lilley (SYRTE, Observatoire de Paris)20/11/2023 17:00
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...
Go to contribution page -
Léonard LEHOUCQ (Institut d'Astrophysique de Paris)20/11/2023 17:20
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...
Go to contribution page
Choisissez le fuseau horaire
Le fuseau horaire de votre profil: