Testing the SZ-based tomographic approach to the thermal history of the universe with pressure-density cross-correlations: Insights from the Magneticum simulation
Sam Young,
Eiichiro Komatsu,
Klaus Dolag
Abstract:The thermal Sunyaev-Zeldovich effect contains information about the thermal history of the universe, observable in maps of the Compton y parameter; however, it does not contain information about the redshift of the sources. Recent papers have utilized a tomographic approach, crosscorrelating the Compton y map with the locations of galaxies with known redshift, in order to deproject the signal along the line of sight. In this paper, we test the validity and accuracy of this tomographic approach to probe the the… Show more
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