Name: GDR CoPhy Episode 4
Start: 2026-06-01T13:30:00+02:00
End: 2026-06-03T14:30:00+02:00
Location: Clermont Ferrand

GDR CoPhy Episode 4

de lundi 1 juin 2026 (13:30) à mercredi 3 juin 2026 (14:30)

lundi 1 juin 2026

13:30 Registration and Welcoming Time

13:30 - 14:00
14:00 Monday afternoon: BLOCK 1
BLOCK 1
14:00 - 16:00
Contributions

14:00 welcome - Jean Orloff

14:10 Introduction to the GDR COPHY episode 4 - Johann COHEN-TANUGI (LPCA, Université Clermont-Auvergne & CNRS)

14:20 GDR COPHY Status report - Josquin Errard

14:30 WG TUG - Vivian POULIN (LUPM, CNRS & U. de Montpellier, France)

14:50 Cosmology with strong lensing images - Julien Larena (LUPM, Université de Montpellier)

15:20 Gravitational lensing beyond approximations: relativistic lightcones for modern cosmological surveys - Laurent MAGRI--STELLA (LAPP)

15:50 Cosmology within the GdR Gravitational waves - Michele Mancarella (Centre de Physique Théorique (CPT))
16:00 Coffee Break
Coffee Break
16:00 - 16:30
16:30 Monday afternoon: BLOCK 2
BLOCK 2
16:30 - 18:30
Contributions

16:30 Rubin-LSST : status and plans - Thibault Guillemin (LAPP)

17:00 The cosmic matter dipole problem - Albert Bonnefous-Abiven (Institut d'Astrophysique de Paris)

17:30 An inhomogeneous cosmological model: the axially symmetric Szekeres GR solution - Marie-Noëlle Celerier (Observatoire de Paris)

18:00 WG ADE - Alain Blanchard
19:30 Cocktail dinatoire

19:30 - 23:15
mardi 2 juin 2026
08:40 Tuesday Morning: BLOCK 1
BLOCK 1
08:40 - 10:20
Contributions

08:45 WG CMB - Matthieu Tristram (IJClab, CNRS, France)

09:00 LiteBIRD - Léo Vacher (IJCLab)

09:20 The Simons Observatory: Early Data from the Small Aperture Telescopes - Amalia VILLARRUBIA AGUILAR (APC CNRS / UPC)

09:50 KAIROS : Proposal for a French SAT observing at high frequencies - Benjamin BERINGUE (APC - CNRS)
10:20 Coffee Break
Coffee Break
10:20 - 10:50
10:50 Tuesday Morning: BLOCK 2
BLOCK 2
10:50 - 12:20
Contributions

10:50 Testing Entropic Explanations of Cosmic Acceleration with DESI and Supernovae - Soumen Basak (IISER Thiruvananthapuram, Kerala, India)

11:20 The Secret Life of Voids: Unifying Density Profiles and their Evolution - Nico SCHUSTER (CPPM)

11:50 How to measure cosmology from nothing: void-galaxy cross-correlation with DESI - Katayoon GHAEMI (Centre de Physique des Particules de Marseille (CPPM))
12:20 Déjeuner au restaurant LA PLACE

12:20 - 14:00
14:00 Tuesday Afternoon: BLOCK 1
BLOCK 1
14:00 - 16:00
Contributions

14:00 Simons Observatory LAT status - Merry Duparc (ijclab)

14:30 SPT-3G: latest results and future prospects - Lennart Balkenhol

15:00 The shape of emptiness: improving the signal from cosmic voids using reconstruction - Giulia DEGNI (CPPM - AMU)

15:30 Cosmology from the Rubin Void Size Function - Pierre BOCCARD (CPPM)
16:00 Coffee Break
Coffee Break
16:00 - 16:30
16:30 Tuesday Afternoon: BLOCK 2
BLOCK 2
16:30 - 18:20
Contributions

16:30 The Lazuli Space Telescope and its use for Cosmology - Mickael RIGAULT (CNRS/IP2I)

17:00 No supernovae? Measuring H₀ from Cepheids, TRGB stars, and masers with BORG peculiar velocities - Richard Stiskalek (Oxford University)

17:30 Future missions for CMB spectral distortion measurements - Xavier Coulon (IAS-CNRS)

18:00 WG TOOLS - Guilhem LAVAUX (IAP, CNRS INSU)
mercredi 3 juin 2026
08:45 Wednesday Morning: BLOCK 1
BLOCK 1
08:45 - 10:15
Contributions

08:45 WST - Etienne Burtin (CEA-Saclay)

09:15 Multiplexed Survey Telescope (MUST) - Eric JULLO (Aix-Marseille Université/LAM)

09:45 Bayesian Inference with Differentiable Simulators for the Joint Analysis of Galaxy Clustering and CMB Lensing - Jonathan Hawla (CEA Paris-Saclay)
10:15 Coffee Break
Coffee Break
10:15 - 10:45
10:45 Wednesday Morning: BLOCK 2
BLOCK 2
10:45 - 12:15
Contributions

10:45 Multi-probe inferences of late-time cosmic dynamics from Stage-III to Stage-V surveys - Eleni Tsaprazi (Imperial College London)

11:15 Overview of DESI and its recent results - Domitille Chebat (CEA Saclay - IRFU - DPhP)

11:45 Simulation-Based Inference (SBI) for cosmology with type Ia Supernovae (SNe Ia). - Adam TRIGUI (IP2I)