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

Author(s): Pandey, S; Baxter, EJ; Xu, Z; Orlowski-Scherer, J; Zhu, N; et al

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Abstract: 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 sigma) detections of galaxy-y cross-correlation in multiple redshift bins. 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 less than or similar to z less than or similar to 0.75. 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.
Publication Date: 15-Sep-2019
Electronic Publication Date: 16-Sep-2019
Citation: Pandey, S, Baxter, EJ, Xu, Z, Orlowski-Scherer, J, Zhu, N, Lidz, A, Aguirre, J, DeRose, J, Devlin, M, Hill, JC, Jain, B, Sheth, RK, Avila, S, Bertin, E, Brooks, D, Buckley-Geer, E, Carnero Rosell, A, Kind, M Carrasco, Carretero, J, Castander, FJ, Cawthon, R, da Costa, LN, De Vicente, J, Desai, S, Diehl, HT, Dietrich, JP, Doel, P, Evrard, AE, Flaugher, B, Fosalba, P, Frieman, J, Garcia-Bellido, J, Gerdes, DW, Giannantonio, T, Gruendl, RA, Gschwend, J, Hartley, WG, Hollowood, DL, James, DJ, Krause, E, Kuehn, K, Kuropatkin, N, Maia, MAG, Marshall, JL, Melchior, P, Menanteau, F, Miquel, R, Plazas, AA, Roodman, A, Sanchez, E, Serrano, S, Sevilla-Noarbe, I, Smith, M, Soares-Santos, M, Sobreira, F, Suchyta, E, Swanson, MEC, Tarle, G, Wechsler, RH. (2019). Constraints on the redshift evolution of astrophysical feedback with Sunyaev-Zel’dovich effect cross-correlations. PHYSICAL REVIEW D, 100 (10.1103/PhysRevD.100.063519
DOI: doi:10.1103/PhysRevD.100.063519
ISSN: 2470-0010
EISSN: 2470-0029
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Type of Material: Journal Article
Journal/Proceeding Title: PHYSICAL REVIEW D
Version: Final published version. Article is made available in OAR by the publisher's permission or policy.

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