Weighing Galaxy Clusters with Weak Lensing

by Elinor Medezinski

at Astrophysics and Cosmology Seminar

Thu, 16 Nov 2017, 11:00
NOTE SPECIAL TIME (THURSDAY 11:00) AND PLACE (FINAL ROOM TBA).

Abstract

With recent advancements in Sunyeav Zel dovich SZ surveys cluster abundance is becoming one of the promising tools of precision cosmology but it requires robust cluster mass calibration Weak lensing provides a direct measure of the cluster mass both baryonic and dark yet is limited by our ability to model and control the systematics The Subaru Hyper Suprime Cam HSC survey is underway and will image 1400 square degrees to unprecedentedly deep r 26 mag and exquisite seeing i 0 5 In this talk I will present the HSC survey and discuss the challenges in measuring the weak lensing mass of galaxy clusters using the first HSC data release of 150 square degrees I will show how we calibrate the Planck SZ cluster masses with the aid of HSC weak lensing and present the next generation of surveys that will bring us to per cent level cosmological constraints

Created on 10-11-2017 by Bar Lev, Yevgeny (ybarlev)
Updaded on 10-11-2017 by Bar Lev, Yevgeny (ybarlev)