HEP Seminar: Results from the Planck Satellite

Dr Anna Bonaldi, Jodrell Bank/University of Manchester

Friday 10 May 2013, 1400-1500
Cavendish Lecture Theatre

After an introduction on the Planck mission and latest results, I will focus on what is presented in the paper "Planck 2013 results. XX. Cosmology from Sunyaev-Zeldovich cluster counts". The redshift distribution of clusters is sensitive to a number of cosmological parameters and the survey has been used to constrain the matter density and power spectrum amplitude on 8Mpc scale. These values appear to be discrepant with the results from the temperature power spectrum. I discuss ways of reconciling these two measurements which include the possibility that the sum of the neutrino masses is in the range 0.2-0.3 eV.