Strong lensing clusters as powerful tools

by Ana Acebron

at Astrophysics and Cosmology Seminar

Wed, 07 Mar 2018, 11:15
Physics building (#54) room 207

Abstract

Strong gravitational lensing SL is nowadays at the very heart of important issues in modern cosmology which I will address in my talk SL allows for instance to map the dark matter DM distribution of galaxy cluster s cores to image very high redshift sources otherwise too faint to be detected or to constrain the geometry of the Universe In an era where high resolution observations have become standard systematic errors in the SL modelling have to be better understood I will address what systematic errors affect the SL modelling of galaxy clusters by analysing two state of the art simulated clusters with the same characteristics as those from the Hubble Frontier Fields clusters and its implications towards constraining cosmological parameters for the CDM or parametric dark energy models Finally I will discuss the potential of SL clusters to uncover high redshift galaxies which can shed some light on the reionization epoch We have taken advantage of the recent RELICS project to analyse two massive SL clusters map their DM distribution and characterise the properties of background z 6 galaxies

Created on 28-02-2018 by Bar Lev, Yevgeny (ybarlev)
Updaded on 28-02-2018 by Bar Lev, Yevgeny (ybarlev)