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Title: Detection of the kinematic Sunyaev–Zel'dovich effect with DES Year 1 and SPT

Journal Article · · Monthly Notices of the Royal Astronomical Society

Here, we detect the kinematic Sunyaev-Zel'dovich (kSZ) effect with a statistical significance of $$4.2 \sigma$$ by combining a cluster catalogue derived from the first year data of the Dark Energy Survey (DES) with CMB temperature maps from the South Pole Telescope Sunyaev-Zel'dovich (SPT-SZ) Survey. This measurement is performed with a differential statistic that isolates the pairwise kSZ signal, providing the first detection of the large-scale, pairwise motion of clusters using redshifts derived from photometric data. By fitting the pairwise kSZ signal to a theoretical template we measure the average central optical depth of the cluster sample, $$\bar{\tau}_e = (3.75 \pm 0.89)\cdot 10^{-3}$$. We compare the extracted signal to realistic simulations and find good agreement with respect to the signal-to-noise, the constraint on $$\bar{\tau}_e$$, and the corresponding gas fraction. High-precision measurements of the pairwise kSZ signal with future data will be able to place constraints on the baryonic physics of galaxy clusters, and could be used to probe gravity on scales $$ \gtrsim 100$$ Mpc.

Research Organization:
Argonne National Laboratory (ANL), Argonne, IL (United States); Brookhaven National Laboratory (BNL), Upton, NY (United States); SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States); Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States); Univ. of Illinois at Urbana-Champaign, IL (United States); The Ohio State Univ., Columbus, OH (United States)
Sponsoring Organization:
USDOE Office of Science (SC), High Energy Physics (HEP); United Kingdom Science and Technology Facilities Council; National Science Foundation (NSF); University of Illinois, Urbana-Champaign, IL (United States); University of Chicago - Kavli Institute for Cosmological Physics; USDOE Office of Science (SC), Basic Energy Sciences (BES)
Contributing Organization:
The DES and SPT Collaborations
Grant/Contract Number:
AC02-07CH11359; AC02-SF00515; SC00112704; AC02-06CH11357; SC0015640
OSTI ID:
1253590
Alternate ID(s):
OSTI ID: 1333878; OSTI ID: 1336110; OSTI ID: 1392302; OSTI ID: 1594618
Report Number(s):
DES-2015-0154; FERMILAB-PUB-16-036-AE; arXiv:1603.03904; DES-2015-0154, Fermilab PUB-16-036-AE; BNL-112556-2016-JA; 1427367
Journal Information:
Monthly Notices of the Royal Astronomical Society, Vol. 461, Issue 3; ISSN 0035-8711
Publisher:
Royal Astronomical SocietyCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 83 works
Citation information provided by
Web of Science

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Pairwise Transverse Velocity Measurement with the Rees–Sciama Effect journal March 2019
Constraints on AGN feedback from its Sunyaev-Zel'dovich imprint on the cosmic background radiation text January 2017
Dark Energy Survey Year 1 Results: Calibration of redMaGiC redshift distributions in DES and SDSS from cross-correlations text January 2018
Detection of the pairwise kinematic Sunyaev-Zel'dovich effect with BOSS DR11 and the Atacama Cosmology Telescope text January 2016
The Tau of Galaxy Clusters text January 2016
Exploring Cosmic Origins with CORE: Cluster Science text January 2017
Future constraints on halo thermodynamics from combined Sunyaev-Zel'dovich measurements text January 2017
Bias to CMB Lensing Reconstruction from Temperature Anisotropies due to Large-Scale Galaxy Motions text January 2017
The Impact of baryonic physics on the kinetic Sunyaev-Zel'dovich Effect text January 2017
Simulating the galaxy cluster "El Gordo": gas motion, kinetic Sunyaev-Zel'dovich signal, and X-ray line features text January 2017
Pairwise Transverse Velocity Measurement with the Rees-Sciama Effect text January 2018
Detection of missing baryons in galaxy groups with kinetic Sunyaev-Zel'dovich effect text January 2019