Constraints on the redshift evolution of astrophysical feedback with Sunyaev-Zel’dovich effect cross-correlations

Journal Article · 16 September 2019 · Physical Review D

DOI: https://doi.org/10.1103/PhysRevD.100.063519 · OSTI ID:1606732

Pandey, Shivam ; Baxter, Eric J.; Xu, Z.; Orlowski-Scherer, J.; Zhu, N.; Lidz, A.; Aguirre, J.; DeRose, J.; Devlin, M.; Hill, J. C.; Jain, B.; Sheth, R. K.; Avila, S.; Bertin, E.; Brooks, D.; Buckley-Geer, E.; Carnero Rosell, A.; Carrasco Kind, M.; Carretero, J.; Castander, F. J. ; Cawthon, R.; da Costa, L. N.; De Vicente, J.; Desai, S.; Diehl, H. T.; Dietrich, J. P.; Doel, P.; Evrard, A. E.; Flaugher, B.; Fosalba, P.; Frieman, J.; García-Bellido, J.; Gerdes, D. W.; Giannantonio, T.; Gruendl, R. A.; Gschwend, J.; Hartley, W. G.; Hollowood, D. L.; James, D. J.; Krause, E.; Kuehn, K.; Kuropatkin, N.; Maia, M. A. G.; Marshall, J. L.; Melchior, P.; Menanteau, F.; Miquel, R.; Plazas, A. A.; Roodman, A.; Sanchez, E.; Serrano, S.; Sevilla-Noarbe, I.; Smith, M.; Soares-Santos, M.; Sobreira, F.; Suchyta, Eric D. ; Swanson, M. E. C.; Tarle, G.; Wechsler, R. H.

An understanding of astrophysical feedback is important for constraining models of galaxy formation and for extracting cosmological information from current and future weak lensing surveys. The thermal Sunyaev-Zel’dovich effect, quantified via the Compton-y parameter, is a powerful tool for studying feedback, because it directly probes the pressure of the hot, ionized gas residing in dark matter halos. Cross-correlations between galaxies and maps of Compton-y obtained from cosmic microwave background surveys are sensitive to the redshift evolution of the gas pressure, and its dependence on halo mass. In this work, we use galaxies identified in year one data from the Dark Energy Survey and Compton-y maps constructed from Planck observations. We find highly significant (roughly 12$$σ$$) detections of galaxy-y cross-correlation in multiple redshift bins. Furthermore, by jointly fitting these measurements as well as measurements of galaxy clustering, we constrain the halo bias-weighted, gas pressure of the Universe as a function of redshift between 0.15≲$$z$$≲0.75. Finally, we compare these measurements to predictions from hydrodynamical simulations, allowing us to constrain the amount of thermal energy in the halo gas relative to that resulting from gravitational collapse.

• Research Organization: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States); Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)
• Sponsoring Organization: USDOE Office of Science (SC), Advanced Scientific Computing Research (ASCR); National Science Foundation (NSF); USDOE Office of Science (SC), High Energy Physics (HEP)
• Contributing Organization: DES Collaboration
• Grant/Contract Number: AC05-00OR22725; AST-1440226; SC0007901; AST-1138766; AST-1536171; AC02-07CH11359
• OSTI ID: 1606732
• Report Number(s): FERMILAB-PUB-19-161-A-AE; arXiv:1904.13347v1; PRVDAQ; TRN: US2104552
• Journal Information: Physical Review D, Vol. 100, Issue 6; ISSN 2470-0010
• Publisher: American Physical Society (APS)Copyright Statement
• Country of Publication: United States
• Language: English