Bonjour,

Vous trouverez ci-dessous l'annonce d'un atelier virtuel consacré à l'espace extragalactique sondé grâce aux sources de hautes et très hautes énergies, qui aura lieu du 9 au 11 décembre. Il est d'ores et déjà possible de s'inscrire et de proposer une contribution à cet atelier.

==============================================

The International Research Network France-Japan NECO (https://collaborations.lam.fr/neco/) organizes an on-line workshop entitled: Probing the Extragalactic Universe with High Energy and Very High Energy Sources.
The dates of the workshop will be from 9 December to 11 December 2020 and from 08:30 - 12:00 in France & 16:30 - 20:00 in Japan.
The attendance will be limited to about ~ 80 persons via a free registration (no fees) on the following website: https://hexgaluniv.sciencesconf.org/

Two types of contribution are now possible
* Poster+Flash talk (3 minutes recorded slideshow commented live + 1 minutes for handover + questions for flash talks session)
* Contributed talk (15 minutes + 3 minutes for questions + 2 minutes for handover)

SCIENTIFIC TOPICS:
The topics are organized around three main domains:
* AGN cycle and galaxy clusters : feedback from AGNs, UFO, extragalactic cosmic rays, galaxy clusters and related AGN physics, HITOMI/XRISM and Athena sciences
* Multi-messenger astrophysics : GRB host galaxies, UHECR and nearby extragalactic populations, short and long GRB and associated gravitational events, constraining stellar populations in galaxies and the Hubble constant, revealing the black hole population with gravitational waves
* Probing extragalactic lines of sight : Extragalactic background light, InterGalactic Magnetic Field, search for LIV signatures in signals from AGN and GRB, contraints deduced for cosmology and fundamental physics, CTA sciences

LIST OF INVITED SPEAKERS:
* Session Active Galactic Nuclei cycle and galaxy clusters
- Clusters of galaxies seen in X-rays: current status and prospects by Naomi OTA (Nara Women's University, Japan): 40-min talk
- Hadronic emission models for AGNs seen at VHE (and the extragalactic cosmic rays issue) by Andreas ZECH (LUTH, Paris Observatory, France): 40-min talk
- Formation and evolution of large scale structures, clusters and large flows by Etienne POINTECOUTEAU (IRAP, Toulouse, France): 30-min talk
- Chemical enrichment in galaxy clusters by François MERNIER (ESA, Europe): 30-min talk
- The cycle of matter around local Active Galactic Nuclei by Philippe SALOME (LERMA, Observatoire de Paris, PSL University, CNRS, Sorbonne University, France): 30-min talk
- Constraining AGN physics from X-ray observations by Hirofumi NODA (Department of Earth and Space Science, Graduate School of Science, Osaka University, Japan): 30-min talk
- AGN feedback and Ultra Fast Outflows by Misaki MIZUMOTO (Hakubi Center / Department of Astronomy, Kyoto University): 30-min talk

* Session Multi-messenger Astrophysics and Gamma-Ray Bursts
- Gamma-ray bursts, progenitors and host galaxies by Bunyo HATSUKADE (University of Tokyo, Japan): 40-min talk
- Cosmic populations (BH, NS ...) probed by current and future gravitational waves detectors by Astrid LAMBERTS (OCA, Nice, France): 40-min talk
- Extragalactic cosmic rays observations by Toshihiro FUJII (The Hakubi Center for Advanced Research and Graduate School of Science, Kyoto University, Japan): 30-min talk
- Cosmic rays acceleration in low luminosity AGNs by Shigeo KIMURA (Frontier Research Institute for Interdisciplinary Sciences/Astronomical Institute, Tohoku University, Japan): 30-min talk
- Fast Radio Bursts and their possible counterparts by Kazumi KASHIYAMA (The Department of Physics, University of Tokyo, Japan); 30-min talk

* Session Probing extragalactic lines of sight with High and Very High Energy observations
- The extragalactic background light and gamma-ray constraints by Jonathan BITEAU (Université Paris-Saclay, CNRS/IN2P3, IJCLab, France): 40-min talk
- GRB at high redshifts and probe of the Inter Galactic Medium by Totani TOMONORI (University of Tokyo, Japan): 30-min talk
- The Intergalactic Magnetic Field (IGMF) studied with VHE gamma-ray sources by Ievgen VOVK (ICRR, University of Tokyo, Japan): 30-min talk
- Primordial magnetic field and its relationship to cosmology and implication to the IGMF by Kohei KAMADA (RESCEU, University of Tokyo, Japan): 30-min talk
- Search for signatures of Lorentz Invariance Violation in VHE flares from AGN by Julien BOLMONT (TBC, LPNHE, Paris-Sorbonne University, France): 30-min talk

SCIENTIFIC ORGANIZATION COMMITTEE:
Katsuaki ASANO (asanok _at_ icrr.u-tokyo.ac.jp)
Didier BARRET (didier.barret _at_ irap.omp.eu)
Veronique BUAT (veronique.buat _at_ lam.fr)
Denis BURGARELLA (denis.burgarella _at_ lam.fr, co-Chair)
Susumu INOUE (susumu.inoue _at_ riken.jp)
Yoshiyuki INOUE (yinoue _at_ astro-osaka.jp)
Aya KUBOTA (aya _at_ shibaura-it.ac.jp)
Emeric LEFLOC'H (emeric.lefloch _at_ cea.fr)
Daniel MAZIN (mazin _at_ icrr.u-tokyo.ac.jp)
Delphine PORQUET (delphine.porquet _at_ lam.fr)
Helene SOL (helene.sol _at_obspm.fr) from LUTH, France (Chair of SOC)
Tsutomu T. TAKEUCHI (takeuchi.tsutomu _at_ g.mbox.nagoya-u.ac.jp, co-Chair)

Transmis par Hélène Sol