作者
Angela Chen, Dragan Huterer, Sujeong Lee, Agnès Ferté, Noah Weaverdyck, O Alves, C Danielle Leonard, Niall MacCrann, Marco Raveri, Anna Porredon, Eleonora Di Valentino, Jessica Muir, Pablo Lemos, AR Liddle, Jonathan Blazek, Andresa Campos, Ross Cawthon, Ami Choi, Scott Dodelson, Jack Elvin-Poole, Daniel Gruen, Ashley J Ross, Lucas F Secco, Ignacio Sevilla-Noarbe, Erin Sheldon, Michael A Troxel, Joe Zuntz, TMC Abbott, Michel Aguena, Sahar Allam, James Annis, Santiago Avila, Emmanuel Bertin, Sunayana Bhargava, Sarah L Bridle, David Brooks, Aurelio Carnero Rosell, Matias Carrasco Kind, Jorge Carretero, Matteo Costanzi, Martin Crocce, LN Da Costa, Maria Elidaiana da Silva Pereira, Tamara M Davis, Peter Doel, TF Eifler, Ismael Ferrero, Pablo Fosalba, Josh Frieman, Juan Garcia-Bellido, Enrique Gaztanaga, David W Gerdes, Robert A Gruendl, Julia Gschwend, Gaston Gutierrez, SR Hinton, Devon L Hollowood, Klaus Honscheid, Ben Hoyle, DJ James, Mike Jarvis, Kyler Kuehn, Ofer Lahav, MAG Maia, JL Marshall, Felipe Menanteau, Ramon Miquel, Robert Morgan, Antonella Palmese, Francisco Paz-Chinchon, Andrés A Plazas, Aaron Roodman, Eusebio Sanchez, Vic Scarpine, Michael Schubnell, Santiago Serrano, Mathew Smith, Eric Suchyta, Gregory Tarle, Daniel Thomas, C To, Tamas Norbert Varga, Jochen Weller, RD Wilkinson, (DES Collaboration)
发表日期
2021/6/15
期刊
Physical Review D
卷号
103
期号
12
页码范围
123528
出版商
American Physical Society
简介
We study a phenomenological class of models where dark matter converts to dark radiation in the low redshift epoch. This class of models, dubbed DMDR, characterizes the evolution of comoving dark-matter density with two extra parameters, and may be able to help alleviate the observed discrepancies between early and late-time probes of the Universe. We investigate how the conversion affects key cosmological observables such as the cosmic microwave background (CMB) temperature and matter power spectra. Combining 3x2pt data from Year 1 of the Dark Energy Survey, Planck-2018 CMB temperature and polarization data, supernovae (SN) Type Ia data from Pantheon, and baryon acoustic oscillation (BAO) data from BOSS DR12, MGS and 6dFGS, we place new constraints on the amount of dark matter that has converted to dark radiation and the rate of this conversion. The fraction of the dark matter that has converted since the beginning of the Universe in …
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A Chen, D Huterer, S Lee, A Ferté, N Weaverdyck… - Physical Review D, 2021
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