Huitième Assemblée Générale du GdR Ondes Gravitationnelles

14 oct. 2024, 12:00 → 15 oct. 2024, 16:30 Europe/Paris

amphithéâtre l’Hexagone (Université Aix Marseille, Campus Luminy)

 

Le GdR Ondes Gravitationnelles (http://gdrgw.in2p3.fr/) a été crée en 2017 avec le but de rassembler la communauté scientifique intéressée par l’exploration de l’Univers avec les ondes gravitationnelles, et de lui fournir des occasions de rencontres et de discussions communes. 

La huitième assemblée générale du GdR Ondes Gravitationnelles se tiendra en présence à l'Université Aix-Marseille, dans l'amphithéâtre l’Hexagone au coeur du campus de Luminy. Elle couvrira les thèmes d’intérêt du GdR, représentés par ses Groupes de Travail.

L'inscription à cette réunion est obligatoire avant le 13 septembre 2024. Il faut, au préalable, devenir membre du GdR en s'inscrivant sur le site http://gdrgw.in2p3.fr/ si vous ne l'êtes pas déjà.

La date limite pour envoyer une contribution est le 13 septembre 2024.

 

         
   

 

 

lun. 14 octobre

12:00 → 13:15 Buffet d'accueil

13:15 → 13:45 Raffaele D'Agnolo: Where to Look and How to Look for High-Frequency Gravitational Waves

dagnolo_Marseille.pdf

13:45 → 14:45 FORMES D'ONDES

13:45 Gravitational radiation reaction and flux-balance equations

Orateur: Luc Blanchet (C.N.R.S.)

Marseille.pdf

14:00 Revisiting 2PN Hamiltonian mechanics of binary black holes

Orateur: Sashwat Tanay (LUTH, Paris Observatory)

sashwat_tanay_presentation.pdf

14:15 Vanishing of Quadratic Love Numbers of Schwarzschild Black Holes

Orateur: M. Nikola Savic (IPhT Paris)

savic quadratic Love numbers Marseille 24.pdf

14:30 Studying Lorentz symmetry violations through gravitational waves and the SME formalism

Orateur: Samy Aoulad Lafkih (Observatoire de Paris)

GDR Marseille.pdf

14:45 → 15:45 POPULATION DES SOURCES

14:45 Towards LISA population study

Orateur: Alexandre Toubiana (Max Planck Institute for Gravitational Physics)

lisa_astro.pdf

15:00 Probing BNS Gravitational Wave Background with ET: From Inspiral to Post-Merger

Orateur: Léonard Lehoucq (Institut d'Astrophysique de Paris)

15:15 Forecasting the population properties of merging black holes

Orateur: Viola De Renzis (University of Milano-Bicocca)

marseille.pdf

15:30 Kilonovae Associated with a Neutron Star-Black Hole Merger : an example study with O4 NSBH candidates

Orateur: Marion Pillas (ULiège)

GdR_Pillas_2024.pdf

15:45 → 16:15 Pause café

16:15 → 16:45 Discussion sur le nouveau groupe de travail "Environnement"

16:45 → 17:45 TESTS DE LA RELATIVITÉ GÉNÉRALE ET THÉORIES ALTERNATIVES

16:45 Non-linear gravitational waves in Horndeski gravity

Orateur: Hugo Roussille (École Normale Supérieure de Lyon)

GdR_presentation.pdf

17:00 Gravitational waves from quasielliptic compact binary systems in massless scalar-tensor theories

Orateur: David Trestini (FZU)

trestini_2024.pdf

17:15 Probing General Relativity with the inspiral of Massive Black Hole Binaries

Orateur: Manuel Piarulli (L2IT, Université Toulouse III - Paul Sabatier)

Piarulli_GdR_TGR.pdf

17:30 Gravitational Waves inspiral tests of General Relativity in the framework of the Einstein Telescope

Orateur: Alessandro Agapito (Groupement de recherche ondes gravitationnelles)

Presentation_Marseille.pdf

17:45 → 18:55 PRÉDICTION ET SUIVI DES SIGNAUX MULTI-MESSAGER

17:45 ET-WST synergy for next generation gravitational wave multi-messenger observations

Orateur: Sofia Bisero (GEPI, Observatoire de Paris, Université PSL, CNRS)

AG_GdR_BISERO.pdf

18:00 GRANDMA follow-up of LVK campaigns O3 and O4 so far, and perspectives

Orateur: Thomas HUSSENOT-DESENONGES (IJCLAB - A2C/OG)

GdROG_Hussenot_GRANDMA.pdf

18:15 Spectral signatures of LISA binary black holes

Orateur: Sandrine Lescaudron (Institute of Theoretical Astrophysics, University of Oslo, 0315 Oslo, Norway)

Lescaudron.pdf

18:30 Electromagnetic follow-up during the LISA mission

Orateur: Pierre-Alexandre Duverne (APC)

19:00 → 21:00 Cocktail

mar. 15 octobre

09:00 → 10:00 ÉTOILES A NEUTRONS, SUPERNOVÆ ET SYNTHÈSES DES ÉLÉMENTS LOURDS

09:00 Detectability of a phase transition in neutron star matter with third-generation gravitational wave interferometers

Orateur: Chiranjib Mondal (Universite Libre de Bruxelles)

GDR_Marseille_2024.pdf

09:20 ROXAS: a new spectral code for isolated neutron star gravitational waves signal

Orateur: Gaël Servignat (LUTH)

GDR_Servignat.pdf

09:33 Gravitational wave signal of proto-neutron star convection

Orateur: Raphaël Raynaud (CEA Saclay)

talk_raynaud.pdf

09:46 Explosive nucleosynthesis and multimessenger emission from extreme stellar explosions

Orateur: Matteo Bugli (CEA - Saclay)

GdR_OG_2024_mbugli.pdf

10:00 → 10:30 Pause café

10:30 → 11:00 Shanika Galaudage: The latest results from the LIGO-Virgo-KAGRA collaboration: O4 is here

Galaudage_GdR_Marseille_static-version.pdf

11:00 → 12:00 DEVELOPPEMENT DES DETECTEURS

11:00 Frequency and phase noise reduction for laser: tests in CALVA and possible implementation on Virgo

Orateur: Manuel Andia (IJCLab)

2024_10_15_Presentation_AG_GdR_OG_Manuel_ANDIA.pdf

11:20 Modelling Newtonian noise of vibroacoustic origin in the Virgo gravitational wave detector

Orateur: Francois Gautier (LAUM, Laboratoire d'Acoustique de l'Université du Mans, UMR CNRS 6613)

24-10-15-Laum-GdR_GW_Marseille.pdf

11:40 Neutralizing the electrostatic charges on the Virgo Test Masses

Orateur: Dr Samuel Salvador (LPC Caen)

ElectrostaticNoise_LPCCaen.pdf

12:00 → 12:30 Germano Nardini: LISA as a probe of particle physics

One of the primary objectives of the LISA mission is to measure and characterize the stochastic gravitational-wave background (SGWB). Achieving this goal will allow LISA to explore various domains, including astrophysics, cosmology, and particle physics. This talk will focus on the latter, specifically on physics beyond the Standard Model that involves strong first-order phase transitions. We will demonstrate that LISA holds significant potential for advancing particle physics. Indeed, by utilizing the reconstruction of the SGWB from first-order phase transitions, LISA will accurately constrain the parameter space of particle physics models.

marseille24_nardini.pdf

12:30 → 13:30 Déjeuner au buffet

13:30 → 14:30 COSMOLOGIE

13:30 Current status of the cosmological analysis pipelines in LVK

Orateur: Benoît Revenu (subatech)

202410-gdr-pipelines.pdf

13:45 Debiasing H0 measurements from gravitational-wave and γ-ray burst observations

Orateur: Michele Mancarella (Aix-Marseille Université)

MANCARELLA_GdR.pdf

14:00 Probing cosmic expansion with gravitational wave-large scale structure correlations

Orateur: Sayantani Bera (CPT, Aix-Marseille Université)

GdRMarseille_SBera.pdf

14:15 Detecting dark matter oscillations with gravitational waveforms

Orateur: Patrick VALAGEAS (CEA Saclay)

valageas.pdf

14:30 → 15:00 Aurélien Chalumeau. On the road to the detection and interpretation of the nano-Hertz Gravitational Waves with Pulsar Timing Arrays

In June 2023, the International Pulsar Timing Array (IPTA) collaboration, comprising the European Pulsar Timing Array (EPTA), the Indian Pulsar Timing Array (InPTA), NANOGrav, and the Parkes Pulsar Timing Array (PPTA), simultaneously announced the first compelling evidence of the very-low-frequency (nHz) gravitational wave background. This result was followed by a detailed comparative analysis at the IPTA level, enhancing the robustness of the results by demonstrating consistency, accounting for the differences across data sets and noise models. In this presentation, I will review these different results and outline the key challenges faced by the EPTA in further optimizing sensitivity and resolving specific peculiarities in our results. Additionally, I will discuss the upcoming Third Data Release of the IPTA, exploring its potential to detect nano-Hertz gravitational waves, and will highlight the complexities involved in interpreting a measured signal with Pulsar Timing Arrays.

PTA_Review_GdR_OG_Marseille.pdf

15:00 → 15:30 Pause café

15:30 → 16:30 MÉTHODES D’ANALYSE DES DONNÉES

15:30 A first exploration of the impact of waveform systematics on the LISA analysis massive black hole binaries

Orateur: Sylvain Marsat (L2I Toulouse, CNRS/IN2P3, UT3)

gdr_marsat_systematics_2024-10-15.pdf

15:45 A new stacking pipeline to detect gravitational waves signals from repeaters

Orateur: Hugo Einsle (Université Côte d'Azur)

EINSLE_Hugo_Stacking.pdf

16:00 Source classification and properties provided in low-latency by the LVK collaboration

Orateur: Florian Aubin (IPHC)

Aubin_SourceClassificationProperties.pdf

16:15 Searching for the Stochastic Gravitational-Wave Background with Ground-Based Detectors

Orateur: Jishnu Suresh (ARTEMIS, Observatoire de la Côte d'Azur)

JishnuSuresh_GdR.pdf