Halo Pressure Profile through the Skew Crosspower Spectrum of the Sunyaev–Zel’dovich Effect and CMB Lensing in Planck
Abstract
We measure the cosmic microwave background (CMB) skewness power spectrum in Planck , using frequency maps of the HFI instrument and the Sunyaev–Zel’dovich (SZ) component map. The twotoone skewness power spectrum measures the crosscorrelation between CMB lensing and the thermal SZ effect. We also directly measure the same crosscorrelation using the Planck CMB lensing map and the SZ map and compare it to the crosscorrelation derived from the skewness power spectrum. We model fit the SZ power spectrum and CMB lensing–SZ crosspower spectrum via the skewness power spectrum to constrain the gas pressure profile of dark matter halos. The gas pressure profile is compared to existing measurements in the literature including a direct estimate based on the stacking of SZ clusters in Planck .
 Authors:
 Department of Physics and Astronomy, University of California, Irvine, CA 92697 (United States)
 Department of Physics, University of California, San Diego, La Jolla, CA 92093 (United States)
 Publication Date:
 OSTI Identifier:
 22654360
 Resource Type:
 Journal Article
 Resource Relation:
 Journal Name: Astrophysical Journal Letters; Journal Volume: 849; Journal Issue: 1; Other Information: Country of input: International Atomic Energy Agency (IAEA)
 Country of Publication:
 United States
 Language:
 English
 Subject:
 79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; ASYMMETRY; COMPARATIVE EVALUATIONS; CORRELATIONS; COSMOLOGY; DISTRIBUTION; NONLUMINOUS MATTER; RELICT RADIATION; SPECTRA; STATISTICS
Citation Formats
Timmons, Nicholas, Cooray, Asantha, Feng, Chang, and Keating, Brian. Halo Pressure Profile through the Skew Crosspower Spectrum of the Sunyaev–Zel’dovich Effect and CMB Lensing in Planck. United States: N. p., 2017.
Web. doi:10.3847/20418213/AA89E8.
Timmons, Nicholas, Cooray, Asantha, Feng, Chang, & Keating, Brian. Halo Pressure Profile through the Skew Crosspower Spectrum of the Sunyaev–Zel’dovich Effect and CMB Lensing in Planck. United States. doi:10.3847/20418213/AA89E8.
Timmons, Nicholas, Cooray, Asantha, Feng, Chang, and Keating, Brian. 2017.
"Halo Pressure Profile through the Skew Crosspower Spectrum of the Sunyaev–Zel’dovich Effect and CMB Lensing in Planck". United States.
doi:10.3847/20418213/AA89E8.
@article{osti_22654360,
title = {Halo Pressure Profile through the Skew Crosspower Spectrum of the Sunyaev–Zel’dovich Effect and CMB Lensing in Planck},
author = {Timmons, Nicholas and Cooray, Asantha and Feng, Chang and Keating, Brian},
abstractNote = {We measure the cosmic microwave background (CMB) skewness power spectrum in Planck , using frequency maps of the HFI instrument and the Sunyaev–Zel’dovich (SZ) component map. The twotoone skewness power spectrum measures the crosscorrelation between CMB lensing and the thermal SZ effect. We also directly measure the same crosscorrelation using the Planck CMB lensing map and the SZ map and compare it to the crosscorrelation derived from the skewness power spectrum. We model fit the SZ power spectrum and CMB lensing–SZ crosspower spectrum via the skewness power spectrum to constrain the gas pressure profile of dark matter halos. The gas pressure profile is compared to existing measurements in the literature including a direct estimate based on the stacking of SZ clusters in Planck .},
doi = {10.3847/20418213/AA89E8},
journal = {Astrophysical Journal Letters},
number = 1,
volume = 849,
place = {United States},
year = 2017,
month =
}

Recent first detections of the crosscorrelation of the thermal Sunyaev–Zel’dovich (tSZ) signal in Planck cosmic microwave background (CMB) temperature maps with gravitational lensing maps inferred from the Planck CMB data and the CFHTLenS galaxy survey provide new probes of the relationship between baryons and dark matter. Using cosmological hydrodynamics simulations, we show that these crosscorrelation signals are dominated by contributions from hot gas in the intracluster medium (ICM), rather than diffuse, unbound gas located beyond the virial radius (the “missing baryons”). Thus, these crosscorrelations offer a tool with which to study the ICM over a wide range of halo massesmore »

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