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Joint measurement of lensing–galaxy correlations using SPT and DES SV data

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posted on 2023-06-09, 03:12 authored by E Baxter, J Clampitt, T Giannantonio, S Dodelson, B Jain, D Huterer, L Bleem, T Crawford, G Efstathiou, P Fosalba, D Kirk, J Kwan, C Sánchez, K Story, M A Troxel, T M C Abbott, F B Abdalla, R Armstrong, A Benoit-Lévy, B Benson, G M Bernstein, R A Bernstein, E Bertin, D Brooks, J Carlstrom, A Carnero Rosell, M Carrasco Kind, J Carretero, R Chown, M Crocce, C E Cunha, L N da Costa, S Desai, H T Diehl, J P Dietrich, P Doel, A E Evrard, A Fausti Neto, B Flaugher, J Frieman, D Gruen, R A Gruendl, G Gutierrez, T de Haan, G Holder, K Honscheid, Z Hou, D J James, K Kuehn, N Kuropatkin, M Lima, M March, J L Marshall, P Martini, P Melchior, C J Miller, R Miquel, J J Mohr, B Nord, Y Omori, A A Plazas, C Reichardt, Kathy RomerKathy Romer, E S Rykoff, E Sanchez, I Sevilla-Noarbe, E Sheldon, R C Smith, M Soares-Santos, F Sobreira, E Suchyta, A Stark, M E C Swanson, G Tarle, D Thomas, A R Walker, R H Wechsler
We measure the correlation of galaxy lensing and cosmic microwave background lensing with a set of galaxies expected to trace the matter density field. The measurements are performed using pre-survey Dark Energy Survey (DES) Science Verification optical imaging data and millimetre-wave data from the 2500 sq. deg. South Pole Telescope Sunyaev–Zel'dovich (SPT-SZ) survey. The two lensing–galaxy correlations are jointly fit to extract constraints on cosmological parameters, constraints on the redshift distribution of the lens galaxies, and constraints on the absolute shear calibration of DES galaxy-lensing measurements. We show that an attractive feature of these fits is that they are fairly insensitive to the clustering bias of the galaxies used as matter tracers. The measurement presented in this work confirms that DES and SPT data are consistent with each other and with the currently favoured ? cold dark matter cosmological model. It also demonstrates that joint lensing–galaxy correlation measurement considered here contains a wealth of information that can be extracted using current and future surveys.

History

Publication status

  • Published

File Version

  • Published version

Journal

Monthly Notices of the Royal Astronomical Society

ISSN

0035-8711

Publisher

Oxford University Press

Issue

4

Volume

461

Page range

4099-4114

Department affiliated with

  • Physics and Astronomy Publications

Research groups affiliated with

  • Astronomy Centre Publications

Full text available

  • Yes

Peer reviewed?

  • Yes

Legacy Posted Date

2016-11-01

First Open Access (FOA) Date

2016-11-01

First Compliant Deposit (FCD) Date

2016-11-01

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