The Cosmology Science Working Group addresses the history of our universe at redshifts of ~0.5 to ~6.

Cosmology Working Group Introduction

The SKA will enable pioneering cosmological surveys, probing immense volumes of the Universe which to date have been unexplored at radio wavelengths. This will be done by observing emission in both radio continuum and the 21 cm spectral line of neutral hydrogen (HI). The position in the radio sky of million of galaxies, and intensity maps made by their collective HI emission, trace the large-scale structure of the Universe, which can reveal the form and growth of dark matter structures over time. Light travelling from distant galaxies is bent by the intervening dark matter, thus creating small shape distortions (weak gravitational lensing) that can be measured to detect this otherwise invisible component. These surveys will enhance our understanding of various aspects of cosmic history, including the faint imprints of the primordial period of inflation, the early stages of galaxy formation, as well as the nature of gravity, dark energy and dark matter which determine the growth of late time large-scale structure.

SWG Banner - Cosmology

Working Group Membership

Members of the the Cosmology Working group can be found here

Please contact the co-chairs if you are interested in joining the group. 

The current co-chairs are:

Guidelines on who can join the group can be found here

The SKAO Project Scientist liaison is Anna Bonaldi

Cosmology Working Group Documentation

The Cosmology chapters from "Advancing Astrophysics with the SKA" (2015) can be found here

The Cosmology banner is here

The Cosmology with SKA1 Red Book is here

Previous Chairs

  • Laura Wolz 2017-2021
  • Richard Battye 2017-2019
  • Mario Santos 2015-2017
  • Xuelei Chen 2015-2017
  • Roy Maartens 2013-2015
Last modified on 15 September 2023