Calibration of the mass-richness relation for galaxy clusters with weak-gravitational lensing

• Grant number: 19/13581-8
• Support Opportunities: Scholarships in Brazil - Scientific Initiation
• Start date: September 01, 2019
• End date: August 31, 2020
• Field of knowledge: Physical Sciences and Mathematics - Astronomy - Extragalactic Astrophysics
• Principal Investigator: Eduardo Serra Cypriano
• Grantee: Alexandre Henriques da Silva
• Host Institution: Instituto de Astronomia, Geofísica e Ciências Atmosféricas (IAG). Universidade de São Paulo (USP). São Paulo , SP, Brazil

Abstract

This IC project focus on the use of weak-lensing techniques for the determination of the mass-richness relation of galaxy clusters using the CS82 survey data. This is a crucial step towards the determination of cosmological parameters through galaxy clusters count. Recently this kind of calibration has been done by the use of the stacking of the lensing signal of multiple systems in bins of richness. In this project we intend to start the development of a method that precluded the binning, the simultaneous fit of all systems.