unWISE tomography of Planck CMB lensing

CMB lensing tomography, or the cross-correlation between CMB lensing maps and large-scale structure tracers over a well-defined redshift range, has the potential to map the amplitude and growth of structure over cosmic time, provide some of the most stringent tests of gravity, and break important de...

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Bibliographic Details
Published in:Journal of cosmology and astroparticle physics 2020-05, Vol.2020 (5), p.47-47
Main Authors: Krolewski, Alex, Ferraro, Simone, Schlafly, Edward F., White, Martin
Format: Article
Language:English
Subjects:
Astronomical models
ASTRONOMY AND ASTROPHYSICS
Balances (scales)
CMB
cosmological parameters from LSS
Cross correlation
Dark energy
Galaxies
galaxy clustering
Large scale structure of the universe
Parameter uncertainty
power spectrum
Quasars
Red shift
Tomography
Tracers
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Summary:CMB lensing tomography, or the cross-correlation between CMB lensing maps and large-scale structure tracers over a well-defined redshift range, has the potential to map the amplitude and growth of structure over cosmic time, provide some of the most stringent tests of gravity, and break important degeneracies between cosmological parameters. In this work, we use the unWISE galaxy catalog to provide three samples at median redshifts z∼0.6,1.1 and 1.5, fully spanning the Dark Energy dominated era, together with the most recent Planck CMB lensing maps. We obtain a combined cross-correlation significance S/N=79.3 over the range of scales 100
ISSN:1475-7516
1475-7516
DOI:10.1088/1475-7516/2020/05/047