8-12 April 2024
Kavli IPMU, Kashiwa, Japan
Asia/Tokyo timezone
Baryons in the Universe 2024


April 8-12, 2024


Kavli IPMU, Kashiwa, Japan

Important Dates

2023 Oct 31:  First announcement of meeting. 

2024 Jan 14: Abstract submissions closed. 

2024 Feb 5: Notification of contributed talks. Announcement of contributed talks delayed to ~ Feb 13, sorry!

2024 April 8: Conference begins.


While baryons compose only 4% the mass-energy of the Universe, they still elude our understanding as the vast majority reside in the circum-halo or inter-galactic media that are difficult to characterize. The distribution of these baryons reflect their accretion into galaxies and subsequent feedback out of galaxies.  The differential distribution of baryons relative to the dark matter also affect cosmological clustering and lensing analyses, and need to be understood to allow precision cosmology at the percent level. Various observational probes including X-rays, quasar absorption-line spectroscopy, the Sunyaev Zel'dovich effects, fast radio bursts etc are maturing and are opening new windows in the cosmic baryons. Meanwhile, hydrodynamical simulations are improving in both resolution and volume, allowing new insights into the baryonic cycle. 

The goal of this meeting at the Kavli Institute for the Physics and Mathematics of the Universe (IPMU) is to bring together a diverse group of researchers studying the cosmic baryon distribution and its various tracers, as well their implications for both galaxy evolution and cosmology. This will be an opportunity for researchers who may not usually encounter each other to interact with ample time for discussion.

Topics to be discussed include, but are not limited to:

  • Observational techniques probing cosmic baryons (X-ray, SZ, FRBs, and Quasar absorption lines etc)
  • Evolution of cosmic baryons in hydrodynamical simulations and observations
  • Impact of baryonic effects on cosmological analyses
  • Methods to ‘Baryonify’ N-body simulations
  • Future surveys to probe the cosmic baryons and evolution


This will be a primarily an in-person meeting at Kavli IPMU (Kashiwa, Japan), but we will stream the presentation videos through Zoom (registered users only) and talks will be uploaded to YouTube.

Confirmed Speakers: 

Daniele Sorini Raúl Angulo Marcel Van Daalen
Celine Peroux Dylan Nelson Claude-Andre Faucher-Giguere
Tilman Troster Emmanuel Schaan Nabila Aghanim
Clancy James Ilya Khrykin Joseph Burchett
Smita Mathur Nhut Truong

Eugene Churazov

Irina Zhuravleva Joseph Mohr Akos Bogdan
Fabrizio Nicastro Stefano Ettori Gabriele Ponti
Giovanni Arico Biwei Dai

Ben Oppenheimer

Ian McCarthy    


Scientific Organizing Committee (SOC):

Khee-Gan Lee (Kavli IPMU, Chair) Jia Liu (Kavli IPMU) Hideki Tanimura (Kavli IPMU)
Aurora Simionescu (SRON) Johan Comparat (MPE) Joop Schaye (Leiden)
Elisa Chisari (Utrecht) Xavier Prochaska (UCSC) Daisuke Nagai (Yale)

Local Organizing Committee (LOC): 

Khee-Gan Lee Katya Vovk Yuxin Huang
Joaquin Armijo Ben Horowitz Chenze Dong

Contact Email: 


Kavli Institute for the Physics and Mathematics of the Universe (Kavli IPMU),
the University of Tokyo, 5-1-5 Kashiwa-no-ha, Kashiwa City, Chiba 277-8583, Japan


Kavli IPMU, Kashiwa, Japan
Lecture Hall
Kashiwa, Japan
Registration for this event is currently open.