Статья

Cosmological constraints from the tomographic cross-correlation of DESI Luminous Red Galaxies and Planck CMB lensing

Martin WhiteDepartment of Astronomy, University of California, Berkeley, CA 94720, U.S.ARongpu ZhouPhysics Division, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720, U.S.AJoseph DeRosePhysics Division, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720, U.S.ASimone FerraroPhysics Division, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720, U.S.AShi-Fan ChenDepartment of Physics, University of California,Berkeley, CA 94720, U.S.ANickolas KokronKavli Institute for Particle Astrophysics and Cosmology and Department of Physics, Stanford University, 382 Via Pueblo Mall, Stanford, CA 94305, U.S.AStephen BaileyPhysics Division, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720, U.S.ADavid BrooksDepartment of Physics and Astronomy, University College London, Gower Street, London WC1E 6BT, U.KJuan García-BellidoInstituto de Física Teórica UAM-CSIC, Universidad Autónoma de Madrid, 28049 Madrid, SpainJulien GuyPhysics Division, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720, U.S.AKlaus HonscheidDepartment of Physics, Ohio State University, 191 W Woodruff Ave, Columbus, OH 43210, U.S.ARobert KehoeDepartment of Physics, Southern Methodist University, P.O. Box 750175, Dallas, TX 75275, U.S.AAnthony KreminPhysics Division, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720, U.S.AMichael LeviPhysics Division, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720, U.S.ANathalie Palanque-DelabrouillePhysics Division, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720, U.S.AClaire PoppettPhysics Division, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720, U.S.ADavid SchlegelPhysics Division, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720, U.S.AGregory TarleDepartment of Physics, University of Michigan, 450 Church Street, Ann Arbor, MI 48109, U.S.A

2022en

ABI

Аннотация

Abstract We use luminous red galaxies selected from the imaging surveys that are being used for targeting by the Dark Energy Spectroscopic Instrument (DESI) in combination with CMB lensing maps from the Planck collaboration to probe the amplitude of large-scale structure over 0.4 ≤ z ≤ 1. Our galaxy sample, with an angular number density of approximately 500 deg -2 over 18,000 sq.deg., is divided into 4 tomographic bins by photometric redshift and the redshift distributions are calibrated using spectroscopy from DESI. We fit the galaxy autospectra and galaxy-convergence cross-spectra using models based on cosmological perturbation theory, restricting to large scales that are expected to be well described by such models. Within the context of ΛCDM, combining all 4 samples and using priors on the background cosmology from supernova and baryon acoustic oscillation measurements, we find S 8 = σ 8 (Ω m /0.3) 0.5 = 0.73 ± 0.03. This result is lower than the prediction of the ΛCDM model conditioned on the Planck data. Our data prefer a slower growth of structure at low redshift than the model predictions, though at only modest significance.

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Идентификаторы

DOI: 10.1088/1475-7516/2022/02/007

Цитирования и источники

Цитирований: 5Использованных источников: 0

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