Cosmic Void Workshops

Since 2024, the team has organized yearly workshops.

Coming soon: Voids@CPPM2026

The third edition is on its way! Join us in Marseille from November 9th to 13th, 2026 for a week of talks, discussions and hands-on sessions on cosmic voids, from simulations and theory to the latest survey data.

Programme, registration and practical information are on the workshop website.

Visit the Voids@CPPM2026 website →

Voids@CPPM2025 workshop, February 24th-28th 2025

2025Monday24 FebruaryTuesday25 FebruaryWednesday26 FebruaryThursday27 FebruaryFriday28 February
09:309:45 arrival at CPPM9:45 arrival at CPPM9:45 arrival at CPPM9:45 arrival at CPPM
10:00SystematicsMarie AubertRubinGideon McFarland, Pierre BoccardDiscussion on optimal void surveyTopical discussions
10:30
11:00Coffee break until 11:25Coffee break until 11:25Coffee break until 11:25Coffee break until 11:25
11:30CMB × voidsAndras Kovacs, Mar Perez Sar, Mina Ghodsiuntil 12:20Summary on current and upcoming surveysDiscussion on optimal void survey20 minShow your workGiovanni VerzaSummary of optimal void survey
12:00Show your workRosa Malandrino, Simone Sartoriuntil 12:20Show your workGiulia Degni, Sofia Contariniuntil 12:20
12:30Lunch breakLunch breakLunch breakLunch break
13:00
13:30Arrivals at CPPM and welcome coffee
14:00Welcome session and introductionsEuclidPauline VielzeufML and voidsDiscussion session with CPPM cosmologistsClosing session
14:30ML and voids15 minMocks and simulations15 min
15:00Brainstorming on optimal void survey and for which void statisticsDESIKatayoon GhaemiMocks and simulations
15:30Show your workAndres Salcedo, Jahmour Givans, Nico Schuster
16:00Coffee breakCoffee breakCoffee break
16:30
17:00Remote contributionYun Wang
17:30
19:30
Talks & sessionsDiscussionsBreaks

Voids@CPPM2024 Kick-off workshop, May 27th-31st 2024

2024Monday27 MayTuesday28 MayWednesday29 MayThursday30 MayFriday31 May
10:00
11:00		PresentationSchedule discussionEuclidSalle du ConseilSystematicsBibliothèqueRubin & photometric surveysSalle du ConseilEuclid detectorsAuréliaSalle Port-Pin
11:00
12:00		Optimal void findingSalle Port-PinStart a project speed date!idea from GiuliaSalle du ConseilBlock 3: claim your slot
  • Carlos: tutorial on void finders
Bibliothèque		Block 4: claim your slot
  • Carlos: z-space systematics
  • Nico: some plots and discussion about void evolution
  • Pauline: void lensing & IA
Salle du Conseil		Machine learning & voidsBibliothèque / Salle Port-Pin
12:30
13:30		LunchLunchLunchLunch
14:00
15:00		Block 1: claim your slot
  • Sofia
Salle En-Vau		Voids@CPPM bi-weekly meetingSalle Port-PinRenoir meetingEn-Vau (3rd floor)CPPM ShowplotSalle Port-PinFree slot!
15:00
16:00		CMB × voidsBlock 2: claim your slot
  • M-Claude: void–galaxy velocity cross-correlation
  • Nico: velocity estimation and interpretation
Salle Port-Pin		Free slotPublicly available codes for void analysisSalle du ConseilFree slot!
Talks & sessionsDiscussionsBreaks