University of Sussex
Browse
10-1093-MNRAS-STV2678.pdf (6.95 MB)

CMB lensing tomography with the DES Science Verification galaxies

Download (6.95 MB)
journal contribution
posted on 2023-06-09, 01:07 authored by T Giannantonio, P Fosalba, R Cawthon, Y Omori, M Crocce, F Elsner, B Leistedt, S Dodelson, A Benoit-Lévy, E Gaztañaga, G Holder, H V Peiris, W J Percival, D Kirk, A H Bauer, B A Benson, G M Bernstein, J Carretero, T M Crawford, R Crittenden, D Huterer, B Jain, E Krause, C L Reichardt, A J Ross, G Simard, B Soergel, A Stark, K T Story, J D Vieira, J Weller, T Abbott, F B Abdalla, S Allam, R Armstrong, M Banerji, R A Bernstein, E Bertin, D Brooks, E Buckley-Geer, D L Burke, D Capozzi, J E Carlstrom, A Carnero Rosell, M Carrasco Kind, F J Castander, C L Chang, C E Cunha, L N da Costa, C B D'Andrea, D L DePoy, S Desai, H T Diehl, J P Dietrich, P Doel, T F Eifler, A E Evrard, A Fausti Neto, E Fernandez, D A Finley, B Flaugher, J Frieman, D Gerdes, D Gruen, R A Gruendl, G Gutierrez, W L Holzapfel, K Honscheid, D J James, K Kuehn, N Kuropatkin, O Lahav, T S Li, M Lima, M March, J L Marshall, P Martini, P Melchior, R Miquel, J J Mohr, R C Nichol, B Nord, R Ogando, A A Plazas, Kathy RomerKathy Romer, A Roodman, E S Rykoff, M Sako, B R Saliwanchik, E Sanchez, M Schubnell, I Sevilla-Noarbe, R C Smith, M Soares-Santos, F Sobreira, E Suchyta, M E C Swanson, G Tarle, J Thaler, D Thomas, V Vikram, A R Walker, R H Wechsler, J Zuntz
We measure the cross-correlation between the galaxy density in the Dark Energy Survey (DES) Science Verification data and the lensing of the cosmic microwave background (CMB) as reconstructed with the Planck satellite and the South Pole Telescope (SPT). When using the DES main galaxy sample over the full redshift range 0.2 < zphot< 1.2, a cross-correlation signal is detected at 6sigma and 4sigma with SPT and Planck , respectively. We then divide the DES galaxies into five photometric redshift bins, finding significant (>2sigma) detections in all bins. Comparing to the fiducial Planck cosmology, we find the redshift evolution of the signal matches expectations, although the amplitude is consistently lower than predicted across redshift bins. We test for possible systematics that could affect our result and find no evidence for significant contamination. Finally, we demonstrate how these measurements can be used to constrain the growth of structure across cosmic time. We find the data are fit by a model in which the amplitude of structure in the z< 1.2 universe is 0.73 ± 0.16 times as large as predicted in the Lambda cold dark matter Planck cosmology, a 1.7sigma deviation.

Funding

Astrophysics and Cosmology - Sussex Consolidated Grant; G1291; STFC-SCIENCE AND TECHNOLOGY FACILITIES COUNCIL; ST/L000652/1

History

Publication status

  • Published

File Version

  • Published version

Journal

Monthly Notices of the Royal Astronomical Society

ISSN

0035-8711

Publisher

Oxford University Press

Issue

3

Volume

456

Page range

3213-3244

Department affiliated with

  • Physics and Astronomy Publications

Full text available

  • Yes

Peer reviewed?

  • Yes

Legacy Posted Date

2016-05-05

First Open Access (FOA) Date

2016-05-05

First Compliant Deposit (FCD) Date

2016-05-05

Usage metrics

    University of Sussex (Publications)

    Categories

    No categories selected

    Licence

    Exports

    RefWorks
    BibTeX
    Ref. manager
    Endnote
    DataCite
    NLM
    DC