Shocks in the stacked Sunyaev-Zel’dovich profiles of clusters II: Measurements from SPT-SZ + Planck Compton-y map
We search for the signature of cosmological shocks in stacked gas pressure profiles of galaxy clusters using data from the South Pole Telescope (SPT). Specifically, we stack the latest Compton-y maps from the 2500 deg2 SPT-SZ survey on the locations of clusters identified in that same data set. The...
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eScholarship, University of California
2022
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ftcdlib:oai:escholarship.org:ark:/13030/qt12n9v700 2024-06-23T07:56:51+00:00 Shocks in the stacked Sunyaev-Zel’dovich profiles of clusters II: Measurements from SPT-SZ + Planck Compton-y map Anbajagane, D Chang, C Jain, B Adhikari, S Baxter, EJ Benson, BA Bleem, LE Bocquet, S Calzadilla, MS Carlstrom, JE Chang, CL Chown, R Crawford, TM Crites, AT Cui, W de Haan, T Mascolo, L Di Dobbs, MA Everett, WB George, EM Grandis, S Halverson, NW Holder, GP Holzapfel, WL Hrubes, JD Lee, AT Luong-Van, D McDonald, MA McMahon, JJ Meyer, SS Millea, M Mocanu, LM Mohr, JJ Natoli, T Omori, Y Padin, S Pryke, C Reichardt, CL Ruhl, JE Saro, A Schaffer, KK Shirokoff, E Staniszewski, Z Stark, AA Vieira, JD Williamson, R 1645 - 1663 2022-06-21 application/pdf https://escholarship.org/uc/item/12n9v700 unknown eScholarship, University of California qt12n9v700 https://escholarship.org/uc/item/12n9v700 CC-BY-NC Monthly Notices of the Royal Astronomical Society, vol 514, iss 2 Astronomical Sciences Physical Sciences galaxies: clusters: intracluster medium large-scale structure of Universe Astronomical and Space Sciences Astronomy & Astrophysics Particle and high energy physics Space sciences article 2022 ftcdlib 2024-05-29T00:48:58Z We search for the signature of cosmological shocks in stacked gas pressure profiles of galaxy clusters using data from the South Pole Telescope (SPT). Specifically, we stack the latest Compton-y maps from the 2500 deg2 SPT-SZ survey on the locations of clusters identified in that same data set. The sample contains 516 clusters with mean mass 〈 M 200m〉 = 1014.9\, M⊙ and redshift z= 0.55. We analyse in parallel a set of zoom-in hydrodynamical simulations from the three hundred project. The SPT-SZ data show two features: (i) a pressure deficit at R/R200m = 1.08 ± 0.09, measured at 3.1σ significance and not observed in the simulations, and; (ii) a sharp decrease in pressure at R/R200m = 4.58 ± 1.24 at 2.0σ significance. The pressure deficit is qualitatively consistent with a shock-induced thermal non-equilibrium between electrons and ions, and the second feature is consistent with accretion shocks seen in previous studies. We split the cluster sample by redshift and mass, and find both features exist in all cases. There are also no significant differences in features along and across the cluster major axis, whose orientation roughly points towards filamentary structure. As a consistency test, we also analyse clusters from the Planck and Atacama Cosmology Telescope Polarimeter surveys and find quantitatively similar features in the pressure profiles. Finally, we compare the accretion shock radius (R sh,\, acc) with existing measurements of the splashback radius (Rsp) for SPT-SZ and constrain the lower limit of the ratio, R sh,\, acc/R sp\> 2.16\± 0.59. Article in Journal/Newspaper South pole University of California: eScholarship South Pole |
institution |
Open Polar |
collection |
University of California: eScholarship |
op_collection_id |
ftcdlib |
language |
unknown |
topic |
Astronomical Sciences Physical Sciences galaxies: clusters: intracluster medium large-scale structure of Universe Astronomical and Space Sciences Astronomy & Astrophysics Particle and high energy physics Space sciences |
spellingShingle |
Astronomical Sciences Physical Sciences galaxies: clusters: intracluster medium large-scale structure of Universe Astronomical and Space Sciences Astronomy & Astrophysics Particle and high energy physics Space sciences Anbajagane, D Chang, C Jain, B Adhikari, S Baxter, EJ Benson, BA Bleem, LE Bocquet, S Calzadilla, MS Carlstrom, JE Chang, CL Chown, R Crawford, TM Crites, AT Cui, W de Haan, T Mascolo, L Di Dobbs, MA Everett, WB George, EM Grandis, S Halverson, NW Holder, GP Holzapfel, WL Hrubes, JD Lee, AT Luong-Van, D McDonald, MA McMahon, JJ Meyer, SS Millea, M Mocanu, LM Mohr, JJ Natoli, T Omori, Y Padin, S Pryke, C Reichardt, CL Ruhl, JE Saro, A Schaffer, KK Shirokoff, E Staniszewski, Z Stark, AA Vieira, JD Williamson, R Shocks in the stacked Sunyaev-Zel’dovich profiles of clusters II: Measurements from SPT-SZ + Planck Compton-y map |
topic_facet |
Astronomical Sciences Physical Sciences galaxies: clusters: intracluster medium large-scale structure of Universe Astronomical and Space Sciences Astronomy & Astrophysics Particle and high energy physics Space sciences |
description |
We search for the signature of cosmological shocks in stacked gas pressure profiles of galaxy clusters using data from the South Pole Telescope (SPT). Specifically, we stack the latest Compton-y maps from the 2500 deg2 SPT-SZ survey on the locations of clusters identified in that same data set. The sample contains 516 clusters with mean mass 〈 M 200m〉 = 1014.9\, M⊙ and redshift z= 0.55. We analyse in parallel a set of zoom-in hydrodynamical simulations from the three hundred project. The SPT-SZ data show two features: (i) a pressure deficit at R/R200m = 1.08 ± 0.09, measured at 3.1σ significance and not observed in the simulations, and; (ii) a sharp decrease in pressure at R/R200m = 4.58 ± 1.24 at 2.0σ significance. The pressure deficit is qualitatively consistent with a shock-induced thermal non-equilibrium between electrons and ions, and the second feature is consistent with accretion shocks seen in previous studies. We split the cluster sample by redshift and mass, and find both features exist in all cases. There are also no significant differences in features along and across the cluster major axis, whose orientation roughly points towards filamentary structure. As a consistency test, we also analyse clusters from the Planck and Atacama Cosmology Telescope Polarimeter surveys and find quantitatively similar features in the pressure profiles. Finally, we compare the accretion shock radius (R sh,\, acc) with existing measurements of the splashback radius (Rsp) for SPT-SZ and constrain the lower limit of the ratio, R sh,\, acc/R sp\> 2.16\± 0.59. |
format |
Article in Journal/Newspaper |
author |
Anbajagane, D Chang, C Jain, B Adhikari, S Baxter, EJ Benson, BA Bleem, LE Bocquet, S Calzadilla, MS Carlstrom, JE Chang, CL Chown, R Crawford, TM Crites, AT Cui, W de Haan, T Mascolo, L Di Dobbs, MA Everett, WB George, EM Grandis, S Halverson, NW Holder, GP Holzapfel, WL Hrubes, JD Lee, AT Luong-Van, D McDonald, MA McMahon, JJ Meyer, SS Millea, M Mocanu, LM Mohr, JJ Natoli, T Omori, Y Padin, S Pryke, C Reichardt, CL Ruhl, JE Saro, A Schaffer, KK Shirokoff, E Staniszewski, Z Stark, AA Vieira, JD Williamson, R |
author_facet |
Anbajagane, D Chang, C Jain, B Adhikari, S Baxter, EJ Benson, BA Bleem, LE Bocquet, S Calzadilla, MS Carlstrom, JE Chang, CL Chown, R Crawford, TM Crites, AT Cui, W de Haan, T Mascolo, L Di Dobbs, MA Everett, WB George, EM Grandis, S Halverson, NW Holder, GP Holzapfel, WL Hrubes, JD Lee, AT Luong-Van, D McDonald, MA McMahon, JJ Meyer, SS Millea, M Mocanu, LM Mohr, JJ Natoli, T Omori, Y Padin, S Pryke, C Reichardt, CL Ruhl, JE Saro, A Schaffer, KK Shirokoff, E Staniszewski, Z Stark, AA Vieira, JD Williamson, R |
author_sort |
Anbajagane, D |
title |
Shocks in the stacked Sunyaev-Zel’dovich profiles of clusters II: Measurements from SPT-SZ + Planck Compton-y map |
title_short |
Shocks in the stacked Sunyaev-Zel’dovich profiles of clusters II: Measurements from SPT-SZ + Planck Compton-y map |
title_full |
Shocks in the stacked Sunyaev-Zel’dovich profiles of clusters II: Measurements from SPT-SZ + Planck Compton-y map |
title_fullStr |
Shocks in the stacked Sunyaev-Zel’dovich profiles of clusters II: Measurements from SPT-SZ + Planck Compton-y map |
title_full_unstemmed |
Shocks in the stacked Sunyaev-Zel’dovich profiles of clusters II: Measurements from SPT-SZ + Planck Compton-y map |
title_sort |
shocks in the stacked sunyaev-zel’dovich profiles of clusters ii: measurements from spt-sz + planck compton-y map |
publisher |
eScholarship, University of California |
publishDate |
2022 |
url |
https://escholarship.org/uc/item/12n9v700 |
op_coverage |
1645 - 1663 |
geographic |
South Pole |
geographic_facet |
South Pole |
genre |
South pole |
genre_facet |
South pole |
op_source |
Monthly Notices of the Royal Astronomical Society, vol 514, iss 2 |
op_relation |
qt12n9v700 https://escholarship.org/uc/item/12n9v700 |
op_rights |
CC-BY-NC |
_version_ |
1802650207889915904 |