# Halo Pressure Profile through the Skew Cross-power 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 two-to-one skewness power spectrum measures the cross-correlation between CMB lensing and the thermal SZ effect. We also directly measure the same cross-correlation using the Planck CMB lensing map and the SZ map and compare it to the cross-correlation derived from the skewness power spectrum. We model fit the SZ power spectrum and CMB lensing–SZ cross-power 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

- Journal Name:
- Astrophysical Journal Letters

- Additional Journal Information:
- Journal Volume: 849; Journal Issue: 1; Other Information: Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 2041-8205

- 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 Cross-power Spectrum of the Sunyaev–Zel’dovich Effect and CMB Lensing in Planck*. United States: N. p., 2017.
Web. doi:10.3847/2041-8213/AA89E8.

```
Timmons, Nicholas, Cooray, Asantha, Feng, Chang, & Keating, Brian.
```*Halo Pressure Profile through the Skew Cross-power Spectrum of the Sunyaev–Zel’dovich Effect and CMB Lensing in Planck*. United States. doi:10.3847/2041-8213/AA89E8.

```
Timmons, Nicholas, Cooray, Asantha, Feng, Chang, and Keating, Brian. Wed .
"Halo Pressure Profile through the Skew Cross-power Spectrum of the Sunyaev–Zel’dovich Effect and CMB Lensing in Planck". United States. doi:10.3847/2041-8213/AA89E8.
```

```
@article{osti_22654360,
```

title = {Halo Pressure Profile through the Skew Cross-power 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 two-to-one skewness power spectrum measures the cross-correlation between CMB lensing and the thermal SZ effect. We also directly measure the same cross-correlation using the Planck CMB lensing map and the SZ map and compare it to the cross-correlation derived from the skewness power spectrum. We model fit the SZ power spectrum and CMB lensing–SZ cross-power 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 = {10.3847/2041-8213/AA89E8},

journal = {Astrophysical Journal Letters},

issn = {2041-8205},

number = 1,

volume = 849,

place = {United States},

year = {2017},

month = {11}

}