학술논문
Cross-correlation of Dark Energy Survey Year 3 lensing data with ACT and Planck thermal Sunyaev-Zel’dovich effect observations. II. Modeling and constraints on halo pressure profiles
Document Type
article
Author
Pandey, S; Gatti, M; Baxter, E; Hill, JC; Fang, X; Doux, C; Giannini, G; Raveri, M; DeRose, J; Huang, H; Moser, E; Battaglia, N; Alarcon, A; Amon, A; Becker, M; Campos, A; Chang, C; Chen, R; Choi, A; Eckert, K; Elvin-Poole, J; Everett, S; Ferte, A; Harrison, I; Maccrann, N; Mccullough, J; Myles, J; Alsina, A Navarro; Prat, J; Rollins, RP; Sanchez, C; Shin, T; Troxel, M; Tutusaus, I; Yin, B; Aguena, M; Allam, S; Andrade-Oliveira, F; Bernstein, GM; Bertin, E; Bolliet, B; Bond, JR; Brooks, D; Calabrese, E; Rosell, A Carnero; Kind, M Carrasco; Carretero, J; Cawthon, R; Costanzi, M; Crocce, M; da Costa, LN; Pereira, MES; De Vicente, J; Desai, S; Diehl, HT; Dietrich, JP; Doel, P; Dunkley, J; Evrard, AE; Ferraro, S; Ferrero, I; Flaugher, B; Fosalba, P; García-Bellido, J; Gaztanaga, E; Gerdes, DW; Giannantonio, T; Gruen, D; Gruendl, RA; Gschwend, J; Gutierrez, G; Herner, K; Hincks, AD; Hinton, SR; Hollowood, DL; Honscheid, K; Hughes, JP; Huterer, D; Jain, B; James, DJ; Jeltema, T; Krause, E; Kuehn, K; Lahav, O; Lima, M; Lokken, M; Madhavacheril, MS; Maia, MAG; Mcmahon, JJ; Melchior, P; Menanteau, F; Miquel, R; Mohr, JJ; Moodley, K; Morgan, R; Nati, F; Niemack, MD; Page, L; Palmese, A
Source
Physical Review D. 105(12)
Subject
Language
Abstract
Hot, ionized gas leaves an imprint on the cosmic microwave background via the thermal Sunyaev-Zel'dovich (tSZ) effect. The cross-correlation of gravitational lensing (which traces the projected mass) with the tSZ effect (which traces the projected gas pressure) is a powerful probe of the thermal state of ionized baryons throughout the Universe and is sensitive to effects such as baryonic feedback. In a companion paper (Gatti et al. Phys. Rev. D 105, 123525 (2022)PRVDAQ2470-0010), we present tomographic measurements and validation tests of the cross-correlation between Galaxy shear measurements from the first three years of observations of the Dark Energy Survey and tSZ measurements from a combination of Atacama Cosmology Telescope and Planck observations. In this work, we use the same measurements to constrain models for the pressure profiles of halos across a wide range of halo mass and redshift. We find evidence for reduced pressure in low-mass halos, consistent with predictions for the effects of feedback from active Galactic nuclei. We infer the hydrostatic mass bias (BM500c/MSZ) from our measurements, finding B=1.8±0.1 when adopting the Planck-preferred cosmological parameters. We additionally find that our measurements are consistent with a nonzero redshift evolution of B, with the correct sign and sufficient magnitude to explain the mass bias necessary to reconcile cluster count measurements with the Planck-preferred cosmology. Our analysis introduces a model for the impact of intrinsic alignments (IAs) of galaxy shapes on the shear-tSZ correlation. We show that IA can have a significant impact on these correlations at current noise levels.