21-22 October 2019
LAL/IPN
Europe/Paris timezone

We organise a 21cm Cosmology Workshop at LAL (CNRS/IN2P3) & Université Paris Sud on the university campus at Orsay, associated with the Tianlai  project collaboration meeting.

  • 21cm Cosmology Workshop, Monday-Tuesday October 21st-22nd   2019, IPN auditorium, Bldg 100, Orsay 

  • Tianlai working group meeting, Thursday-Friday, October 17th-18th 2019, LAL, Bldg 200, Orsay  

  • Tianlai collaboration meeting, Wednesday, October 23rd 2019, LAL, Bldg 200, Orsay

    Event home page & registration : 21cmcosmology2019@Orsay


The Orsay 21cm Cosmology 2019 workshop aim is to provide a theoretical and observational overview of cosmology at 21 cm. This neutral hydrogen line is the probe of  the Epoch of Reionisation (EoR) at high redshift, and to  observe  the birth of the first stars. It can also be used to observe the universe at lower redshifts, in particular through intensity mapping to constrain cosmological models (dark energy, modified theories of gravity, inflation...).

The scientific perspectives offered by SKA for the study of reionization, as well as the results obtained by pathfinder experiments (LOFAR, MWA, HERA, MeerKat...) in this field will be discussed. Several projects are underway to explore the method of intensity mapping at lower redshift (z ~ 1-3) for cosmology. The scientific results and prospects of these projects, including TIANLAI (China/US/France), CHIME (Canada/US), HIRAX (South Africa) or BINGO (UK/Brazil) will also be presented. 

Starts
Ends
Europe/Paris
LAL/IPN
LAL : Laboratoire de l'Accélérateur Linéaire, University Campus, at Orsay, Building 200. IPN : Institut de Physique Nucléaire, University Campus at Orsay, Building 100. Orsay campus is easily accessible through the RER, a 30 minutes ride from Paris (Denfert-Rochereau)

Program topics (TBC):

  • EoR (Epoch of Reionisation) 
  • 21cm line as a cosmological probe 
  • Observational constraints on the EoR signal 
    • LOFAR 
    • HERA
  • Probing Reionisation through spectral distortions 
    • EDGES 
  • Cosmology with SKA 
  • SKA project status 
  • 21cm Intensity Mapping
    • CHIME
    • Tianlai
    • HIRAX
    • Bingo
  • Intensity Mapping with SKA 
  • Intensity Mapping with other lines

Scientific Organising committee:

Réza Ansari - Univ. Paris Sud & LAL, Orsay, France

Xuelei Chen - NAOC, Beijing, China

Olivier Perdereau (chair) - LAL, CNRS/IN2P3 , Orsay, France

Jean-Michel Martin - GEPI, Observatoire de Paris, France

Albert Stebbins, Fermilab, Batavia, IL, USA  

Peter Timbie, Univ.  of Wisconsin, Madison, USA

Local Organising committee:

Olivier Perdereau (chair) - LAL, CNRS/IN2P3 , Orsay, France

Valérie Brouillard - LAL, CNRS/IN2P3 , Orsay, France

Catherine Bourge - LAL, CNRS/IN2P3 , Orsay, France

Catherine Nizery - LAL, CNRS/IN2P3 , Orsay, France

Réza Ansari - Univ. Paris Sud & LAL, Orsay, France


We acknowledge financial support from Université Paris-Saclay P2I department  and from CNRS/IN2P3