CMB lensing tomography with the DES Science Verification galaxies
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...
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Online Access: | http://www.osti.gov/servlets/purl/1247533 https://www.osti.gov/biblio/1247533 https://doi.org/10.1093/mnras/stv2678 |
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ftosti:oai:osti.gov:1247533 2023-07-30T04:06:53+02:00 CMB lensing tomography with the DES Science Verification galaxies Giannantonio, T. 2023-06-26 application/pdf http://www.osti.gov/servlets/purl/1247533 https://www.osti.gov/biblio/1247533 https://doi.org/10.1093/mnras/stv2678 unknown http://www.osti.gov/servlets/purl/1247533 https://www.osti.gov/biblio/1247533 https://doi.org/10.1093/mnras/stv2678 doi:10.1093/mnras/stv2678 79 ASTRONOMY AND ASTROPHYSICS 2023 ftosti https://doi.org/10.1093/mnras/stv2678 2023-07-11T09:05:46Z 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 < z phot < 1.2, a cross-correlation signal is detected at 6σ and 4σ with SPT and Planck respectively. We then divide the DES galaxies into five photometric redshift bins, finding significant (>2σ) 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 LCDM Planck cosmology, a 1.7σ deviation. Other/Unknown Material South pole SciTec Connect (Office of Scientific and Technical Information - OSTI, U.S. Department of Energy) South Pole Monthly Notices of the Royal Astronomical Society 456 3 3213 3244 |
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SciTec Connect (Office of Scientific and Technical Information - OSTI, U.S. Department of Energy) |
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79 ASTRONOMY AND ASTROPHYSICS Giannantonio, T. CMB lensing tomography with the DES Science Verification galaxies |
topic_facet |
79 ASTRONOMY AND ASTROPHYSICS |
description |
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 < z phot < 1.2, a cross-correlation signal is detected at 6σ and 4σ with SPT and Planck respectively. We then divide the DES galaxies into five photometric redshift bins, finding significant (>2σ) 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 LCDM Planck cosmology, a 1.7σ deviation. |
author |
Giannantonio, T. |
author_facet |
Giannantonio, T. |
author_sort |
Giannantonio, T. |
title |
CMB lensing tomography with the DES Science Verification galaxies |
title_short |
CMB lensing tomography with the DES Science Verification galaxies |
title_full |
CMB lensing tomography with the DES Science Verification galaxies |
title_fullStr |
CMB lensing tomography with the DES Science Verification galaxies |
title_full_unstemmed |
CMB lensing tomography with the DES Science Verification galaxies |
title_sort |
cmb lensing tomography with the des science verification galaxies |
publishDate |
2023 |
url |
http://www.osti.gov/servlets/purl/1247533 https://www.osti.gov/biblio/1247533 https://doi.org/10.1093/mnras/stv2678 |
geographic |
South Pole |
geographic_facet |
South Pole |
genre |
South pole |
genre_facet |
South pole |
op_relation |
http://www.osti.gov/servlets/purl/1247533 https://www.osti.gov/biblio/1247533 https://doi.org/10.1093/mnras/stv2678 doi:10.1093/mnras/stv2678 |
op_doi |
https://doi.org/10.1093/mnras/stv2678 |
container_title |
Monthly Notices of the Royal Astronomical Society |
container_volume |
456 |
container_issue |
3 |
container_start_page |
3213 |
op_container_end_page |
3244 |
_version_ |
1772819839065260032 |