10-1093-MNRAS-STV2678.pdf (6.95 MB)
CMB lensing tomography with the DES Science Verification galaxies
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 ZuntzWe 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 SocietyISSN
0035-8711Publisher
Oxford University PressExternal DOI
Issue
3Volume
456Page range
3213-3244Department affiliated with
- Physics and Astronomy Publications
Full text available
- Yes
Peer reviewed?
- Yes
Legacy Posted Date
2016-05-05First Open Access (FOA) Date
2016-05-05First Compliant Deposit (FCD) Date
2016-05-05Usage metrics
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