@article{7a2c921cce524ebd818234fadd484cb7,

title = "Constraining the baryonic feedback with cosmic shear using the DES Year-3 small-scale measurements",

abstract = "We use the small scales of the Dark Energy Survey (DES) Year-3 cosmic shear measurements, which are excluded from the DES Year-3 cosmological analysis, to constrain the baryonic feedback. To model the baryonic feedback, we adopt a baryonic correction model and use the numerical package BACCOEMU to accelerate the evaluation of the baryonic non-linear matter power spectrum. We design our analysis pipeline to focus on the constraints of the baryonic suppression effects, utilizing the implication given by a principal component analysis on the Fisher forecasts. Our constraint on the baryonic effects can then be used to better model and ameliorate the effects of baryons in producing cosmological constraints from the next-generation large-scale structure surveys. We detect the baryonic suppression on the cosmic shear measurements with a ∼2σ significance. The characteristic halo mass for which half of the gas is ejected by baryonic feedback is constrained to be Mc > 1013.2 h-1 M☉ (95 per cent C.L.). The best-fitting baryonic suppression is ∼ 5 per cent at k = 1.0 Mpc h-1 and ∼ 15 per cent at k = 5.0 Mpc h-1. Our findings are robust with respect to the assumptions about the cosmological parameters, specifics of the baryonic model, and intrinsic alignments.",

keywords = "cosmology: observations, gravitational lensing: weak, large-scale structure of Universe",

author = "{DES Collaboration} and A. Chen and G. Aric{\`o} and D. Huterer and Angulo, {R. E.} and N. Weaverdyck and O. Friedrich and Secco, {L. F.} and C. Hern{\'a}ndez-Monteagudo and A. Alarcon and O. Alves and A. Amon and F. Andrade-Oliveira and E. Baxter and K. Bechtol and Becker, {M. R.} and Bernstein, {G. M.} and J. Blazek and A. Brandao-Souza and Bridle, {S. L.} and H. Camacho and A. Campos and Rosell, {A. Carnero} and Kind, {M. Carrasco} and R. Cawthon and C. Chang and R. Chen and P. Chintalapati and A. Choi and J. Cordero and M. Crocce and Pereira, {M. E.S.} and C. Davis and J. DeRose and {Di Valentino}, E. and Diehl, {H. T.} and S. Dodelson and C. Doux and A. Drlica-Wagner and K. Eckert and Eifler, {T. F.} and F. Elsner and J. Elvin-Poole and S. Everett and X. Fang and A. Fert{\'e} and P. Fosalba and M. Gatti and E. Gaztanaga and G. Giannini and E. Krause",

note = "Funding Information: Based in part on observations at Cerro Tololo Inter-American Observatory at NSF{\textquoteright}s NOIRLab (NOIRLab Prop. ID 2012B-0001; PI: J. Frieman), which is managed by the Association of Universities for Research in Astronomy (AURA) under a cooperative agreement with the National Science Foundation. The DES data management system is supported by the National Science Foundation under Grant Numbers AST-1138766 and AST-1536171. The DES participants from Spanish institutions are partially supported by MICINN under grants ESP2017-89838, PGC2018-094773, PGC2018-102021, SEV-2016-0588, SEV-2016-0597, and MDM-2015-0509, some of which include ERDF funds from the European Union. IFAE is partially funded by the CERCA program of the Generalitat de Catalunya. Research leading to these results has received funding from the European Research Council under the European Union{\textquoteright}s Seventh Framework Program (FP7/2007-2013) including ERC grant agreements 240672, 291329, and 306478. We acknowledge support from the Brazilian Instituto Nacional de Ci{\^e}ncia e Tecnologia (INCT) do e-Universo (CNPq grant 465376/2014-2). This manuscript has been authored by Fermi Research Alliance, LLC under Contract No. DE-AC02-07CH11359 with the U.S. Department of Energy, Office of Science, Office of High Energy Physics. Publisher Copyright: {\textcopyright} 2022 The Author(s).",

year = "2023",

month = feb,

day = "1",

doi = "10.1093/mnras/stac3213",

language = "English (US)",

volume = "518",

pages = "5340--5355",

journal = "Monthly Notices of the Royal Astronomical Society",

issn = "0035-8711",

publisher = "Oxford University Press",

number = "4",

}