Detection of the kinematic Sunyaev-Zel'dovich effect with DES Year 1 and SPT

The DES and SPT Collaborations

doi:10.1093/mnras/stw1455

Detection of the kinematic Sunyaev-Zel'dovich effect with DES Year 1 and SPT

The DES and SPT Collaborations

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95 Scopus citations

Abstract

We detect the kinematic Sunyaev-Zel'dovich (kSZ) effect with a statistical significance of 4.2θ by combining a cluster catalogue derived from the first year data of the Dark Energy Survey with cosmic microwave background temperature maps from the South Pole Telescope Sunyaev-Zel'dovich 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, t_e = (3.75 ± 0.89) × 10^-3. We compare the extracted signal to realistic simulations and find good agreement with respect to the signal to noise, the constraint on t_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 ≥100 Mpc.

Original language	English (US)
Journal	Monthly Notices of the Royal Astronomical Society
Volume	461
Issue number	3
DOIs	https://doi.org/10.1093/mnras/stw1455
State	Published - Sep 21 2016

All Science Journal Classification (ASJC) codes

Astronomy and Astrophysics
Space and Planetary Science

Keywords

Cosmic background radiation
Galaxies: clusters: general
Large-scale structure of Universe

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10.1093/mnras/stw1455

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@article{84f48e5b26344a03b4915c2fc1ccd9f8,

title = "Detection of the kinematic Sunyaev-Zel'dovich effect with DES Year 1 and SPT",

abstract = "We detect the kinematic Sunyaev-Zel'dovich (kSZ) effect with a statistical significance of 4.2θ by combining a cluster catalogue derived from the first year data of the Dark Energy Survey with cosmic microwave background temperature maps from the South Pole Telescope Sunyaev-Zel'dovich 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, te = (3.75 ± 0.89) × 10-3. We compare the extracted signal to realistic simulations and find good agreement with respect to the signal to noise, the constraint on te, 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 ≥100 Mpc.",

keywords = "Cosmic background radiation, Galaxies: clusters: general, Large-scale structure of Universe",

author = "{The DES and SPT Collaborations} and B. Soergel and S. Flender and Story, {K. T.} and L. Bleem and T. Giannantonio and G. Efstathiou and E. Rykoff and Benson, {B. A.} and T. Crawford and S. Dodelson and S. Habib and K. Heitmann and G. Holder and B. Jain and E. Rozo and A. Saro and J. Weller and Abdalla, {F. B.} and S. Allam and J. Annis and R. Armstrong and A. Benoit-{\'L}evy and Bernstein, {G. M.} and Carlstrom, {J. E.} and Rosell, {A. Carnero} and Kind, {M. Carrasco} and Castander, {F. J.} and I. Chiu and R. Chown and M. Crocce and Cunha, {C. E.} and D'Andrea, {C. B.} and {da Costa}, {L. N.} and {de Haan}, T. and S. Desai and Diehl, {H. T.} and Dietrich, {J. P.} and P. Doel and J. Estrada and Evrard, {A. E.} and B. Flaugher and P. Fosalba and J. Frieman and E. Gaztanaga and D. Gruen and Gruendl, {R. A.} and Holzapfel, {W. L.} and K. Honscheid and James, {D. J.} and P. Melchior",

year = "2016",

month = sep,

day = "21",

doi = "10.1093/mnras/stw1455",

language = "English (US)",

volume = "461",

journal = "Monthly Notices of the Royal Astronomical Society",

issn = "0035-8711",

publisher = "Oxford University Press",

number = "3",

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TY - JOUR

T1 - Detection of the kinematic Sunyaev-Zel'dovich effect with DES Year 1 and SPT

AU - The DES and SPT Collaborations

AU - Soergel, B.

AU - Flender, S.

AU - Story, K. T.

AU - Bleem, L.

AU - Giannantonio, T.

AU - Efstathiou, G.

AU - Rykoff, E.

AU - Benson, B. A.

AU - Crawford, T.

AU - Dodelson, S.

AU - Habib, S.

AU - Heitmann, K.

AU - Holder, G.

AU - Jain, B.

AU - Rozo, E.

AU - Saro, A.

AU - Weller, J.

AU - Abdalla, F. B.

AU - Allam, S.

AU - Annis, J.

AU - Armstrong, R.

AU - Benoit-Ĺevy, A.

AU - Bernstein, G. M.

AU - Carlstrom, J. E.

AU - Rosell, A. Carnero

AU - Kind, M. Carrasco

AU - Castander, F. J.

AU - Chiu, I.

AU - Chown, R.

AU - Crocce, M.

AU - Cunha, C. E.

AU - D'Andrea, C. B.

AU - da Costa, L. N.

AU - de Haan, T.

AU - Desai, S.

AU - Diehl, H. T.

AU - Dietrich, J. P.

AU - Doel, P.

AU - Estrada, J.

AU - Evrard, A. E.

AU - Flaugher, B.

AU - Fosalba, P.

AU - Frieman, J.

AU - Gaztanaga, E.

AU - Gruen, D.

AU - Gruendl, R. A.

AU - Holzapfel, W. L.

AU - Honscheid, K.

AU - James, D. J.

AU - Melchior, P.

PY - 2016/9/21

Y1 - 2016/9/21

N2 - We detect the kinematic Sunyaev-Zel'dovich (kSZ) effect with a statistical significance of 4.2θ by combining a cluster catalogue derived from the first year data of the Dark Energy Survey with cosmic microwave background temperature maps from the South Pole Telescope Sunyaev-Zel'dovich 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, te = (3.75 ± 0.89) × 10-3. We compare the extracted signal to realistic simulations and find good agreement with respect to the signal to noise, the constraint on te, 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 ≥100 Mpc.

AB - We detect the kinematic Sunyaev-Zel'dovich (kSZ) effect with a statistical significance of 4.2θ by combining a cluster catalogue derived from the first year data of the Dark Energy Survey with cosmic microwave background temperature maps from the South Pole Telescope Sunyaev-Zel'dovich 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, te = (3.75 ± 0.89) × 10-3. We compare the extracted signal to realistic simulations and find good agreement with respect to the signal to noise, the constraint on te, 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 ≥100 Mpc.

KW - Cosmic background radiation

KW - Galaxies: clusters: general

KW - Large-scale structure of Universe

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U2 - 10.1093/mnras/stw1455

DO - 10.1093/mnras/stw1455

M3 - Article

SN - 0035-8711

VL - 461

JO - Monthly Notices of the Royal Astronomical Society

JF - Monthly Notices of the Royal Astronomical Society

IS - 3

ER -

Detection of the kinematic Sunyaev-Zel'dovich effect with DES Year 1 and SPT

Abstract

All Science Journal Classification (ASJC) codes

Keywords

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