Dark energy survey year 1 results: Constraining baryonic physics in the Universe

Journal Article · Mon Feb 15 00:00:00 EST 2021 · Monthly Notices of the Royal Astronomical Society

DOI:https://doi.org/10.1093/mnras/stab357· OSTI ID:1770465

Huang, Hung-Jin  ^[1]; Eifler, Tim  ^[2]; Mandelbaum, Rachel  ^[3]; Bernstein, Gary M.  ^[4]; Chen, Anqi ^[5]; Choi, Ami ^[6]; García-Bellido, Juan  ^[7]; Huterer, Dragan ^[5]; Krause, Elisabeth ^[2]; Rozo, Eduardo ^[8]; Singh, Sukhdeep ^[9]; Bridle, Sarah ^[10]; DeRose, Joseph ^[11]; Elvin-Poole, Jack ^[12]; Fang, Xiao  ^[2]; Friedrich, Oliver ^[13]; Gatti, Marco ^[14]; Gaztanaga, Enrique  ^[15]; Gruen, Daniel  ^[16]; Hartley, Will ^[17] ; Hoyle, Ben  ^[18]; Jarvis, Mike ^[4]; MacCrann, Niall  ^[12]; Miranda, Vivian ^[2]; Rau, Markus  ^[3]; Prat, Judit  ^[19]; Sánchez, Carles  ^[4]; Samuroff, Simon  ^[3]; Troxel, Michael  ^[20]; Zuntz, Joe  ^[21]; Abbott, Tim ^[22]; Aguena, Michel ^[23]; Annis, James ^[24]; Avila, Santiago  ^[7]; Becker, Matthew  ^[25]; Bertin, Emmanuel  ^[26]; Brooks, David ^[27]; Burke, David ^[28]; Carnero Rosell, Aurelio  ^[29]; Carrasco Kind, Matias  ^[30]; Carretero, Jorge ^[14]; Castander, Francisco Javier ^[15]; da Costa, Luiz ^[31]; De Vicente, Juan  ^[32]; Dietrich, Jörg ^[33]; Doel, Peter ^[27]; Everett, Spencer ^[34]; Flaugher, Brenna ^[24]; Fosalba, Pablo  ^[15]; Frieman, Josh ^[35]; Gruendl, Robert ^[30]; Gutierrez, Gaston ^[24]; Hinton, Samuel  ^[36]; Honscheid, Klaus ^[12]; James, David ^[37]; Kuehn, Kyler ^[38]; Lahav, Ofer ^[27]; Lima, Marcos ^[23]; Maia, Marcio ^[31]; Marshall, Jennifer ^[39]; Menanteau, Felipe ^[30]; Miquel, Ramon ^[40]; Paz-Chinchón, Francisco ^[41]; Malagón, Andrés Plazas  ^[42]; Romer, Kathy ^[43]; Roodman, Aaron ^[28]; Sanchez, Eusebio ^[32]; Scarpine, Vic ^[24]; Serrano, Santiago ^[15]; Sevilla, Ignacio ^[32]; Smith, Mathew  ^[44]; Soares-Santos, Marcelle ^[45]; Suchyta, Eric  ^[46]; Swanson, Molly ^[47]; Tarle, Gregory ^[5]; Thomas, Diehl H. ^[24]; Weller, Jochen ^[18]

---

1. Steward Observatory/Department of Astronomy, University of Arizona, 933 North Cherry Avenue, Tucson, AZ 85721, USA, McWilliams Center for Cosmology, Department of Physics, Carnegie Mellon University, Pittsburgh, PA 15213, USA
2. Steward Observatory/Department of Astronomy, University of Arizona, 933 North Cherry Avenue, Tucson, AZ 85721, USA
3. McWilliams Center for Cosmology, Department of Physics, Carnegie Mellon University, Pittsburgh, PA 15213, USA
4. Department of Physics and Astronomy, University of Pennsylvania, Philadelphia, PA 19104, USA
5. Department of Physics, University of Michigan, Ann Arbor, MI 48109, USA
6. Center for Cosmology and Astro-Particle Physics, The Ohio State University, Columbus, OH 43210, USA
7. Instituto de Fisica Teorica UAM/CSIC, Universidad Autonoma de Madrid, E-28049 Madrid, Spain
8. Department of Physics, University of Arizona, Tucson, AZ 85721, USA
9. Berkeley Center for Cosmological Physics, University of California, Berkeley, CA 94720, USA
10. Jodrell Bank Center for Astrophysics, School of Physics and Astronomy, University of Manchester, Oxford Road, Manchester M13 9PL, UK
11. Berkeley Center for Cosmological Physics, University of California, Berkeley, CA 94720, USA, Santa Cruz Institute for Particle Physics, Santa Cruz, CA 95064, USA
12. Center for Cosmology and Astro-Particle Physics, The Ohio State University, Columbus, OH 43210, USA, Department of Physics, The Ohio State University, Columbus, OH 43210, USA
13. Kavli Institute for Cosmology, University of Cambridge, Madingley Road, Cambridge CB3 0HA, UK
14. Institut de Física d’Altes Energies (IFAE), The Barcelona Institute of Science and Technology, Campus UAB, E-08193 Bellaterra (Barcelona) Spain
15. Institut d’Estudis Espacials de Catalunya (IEEC), E-08034 Barcelona, Spain, Institute of Space Sciences (ICE, CSIC), Campus UAB, Carrer de Can Magrans, s/n, E-08193 Barcelona, Spain
16. Department of Physics, Stanford University, 382 Via Pueblo Mall, Stanford, CA 94305, USA, Kavli Institute for Particle Astrophysics and Cosmology, P. O. Box 2450, Stanford University, Stanford, CA 94305, USA, SLAC National Accelerator Laboratory, Menlo Park, CA 94025, USA
17. Département de Physique Théorique and Center for Astroparticle Physics, Université de Genève, 24 quai Ernest Ansermet, CH-1211 Geneva, Switzerland, Department of Physics and Astronomy, University College London, Gower Street, London WC1E 6BT, UK, Department of Physics, ETH Zurich, Wolfgang-Pauli-Strasse 16, CH-8093 Zurich, Switzerland
18. Max Planck Institute for Extraterrestrial Physics, Giessenbachstrasse, D-85748 Garching, Germany, Universitäts-Sternwarte, Fakultät für Physik, Ludwig-Maximilians Universität München, Scheinerstr. 1, D-81679 München, Germany
19. Department of Astronomy and Astrophysics, University of Chicago, Chicago, IL 60637, USA
20. Department of Physics, Duke University Durham, NC 27708, USA
21. Institute for Astronomy, University of Edinburgh, Edinburgh EH9 3HJ, UK
22. Cerro Tololo Inter-American Observatory, NSF’s National Optical-Infrared Astronomy Research Laboratory, Casilla 603, La Serena, Chile
23. Departamento de Física Matemática, Instituto de Física, Universidade de São Paulo, CP 66318, São Paulo, SP 05314-970, Brazil, Laboratório Interinstitucional de e-Astronomia - LIneA, Rua Gal. José Cristino 77, Rio de Janeiro, RJ 20921-400, Brazil
24. Fermi National Accelerator Laboratory, P. O. Box 500, Batavia, IL 60510, USA
25. Argonne National Laboratory, 9700 South Cass Avenue, Lemont, IL 60439, USA
26. CNRS, UMR 7095, Institut d’Astrophysique de Paris, F-75014 Paris, France, Sorbonne Universités, UPMC Univ Paris 06, UMR 7095, Institut d’Astrophysique de Paris, F-75014 Paris, France
27. Department of Physics and Astronomy, University College London, Gower Street, London WC1E 6BT, UK
28. Kavli Institute for Particle Astrophysics and Cosmology, P. O. Box 2450, Stanford University, Stanford, CA 94305, USA, SLAC National Accelerator Laboratory, Menlo Park, CA 94025, USA
29. Instituto de Astrofisica de Canarias, E-38205 La Laguna, Tenerife, Spain, Universidad de La Laguna, Dpto. Astrofísica, E-38206 La Laguna, Tenerife, Spain
30. Department of Astronomy, University of Illinois at Urbana-Champaign, 1002 W. Green Street, Urbana, IL 61801, USA, National Center for Supercomputing Applications, 1205 West Clark St., Urbana, IL 61801, USA
31. Laboratório Interinstitucional de e-Astronomia - LIneA, Rua Gal. José Cristino 77, Rio de Janeiro, RJ 20921-400, Brazil, Observatório Nacional, Rua Gal. José Cristino 77, Rio de Janeiro, RJ 20921-400, Brazil
32. Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT), Madrid 04200, Spain
33. Faculty of Physics, Ludwig-Maximilians-Universität, Scheinerstr. 1, D-81679 Munich, Germany
34. Santa Cruz Institute for Particle Physics, Santa Cruz, CA 95064, USA
35. Fermi National Accelerator Laboratory, P. O. Box 500, Batavia, IL 60510, USA, Kavli Institute for Cosmological Physics, University of Chicago, Chicago, IL 60637, USA
36. School of Mathematics and Physics, University of Queensland, Brisbane, QLD 4072, Australia
37. Center for Astrophysics, Harvard and Smithsonian, 60 Garden Street, Cambridge, MA 02138, USA
38. Australian Astronomical Optics, Macquarie University, North Ryde, NSW 2113, Australia, Lowell Observatory, 1400 Mars Hill Rd, Flagstaff, AZ 86001, USA
39. George P. and Cynthia Woods Mitchell Institute for Fundamental Physics and Astronomy, and Department of Physics and Astronomy, Texas A&M University, College Station, TX 77843, USA
40. Institut de Física d’Altes Energies (IFAE), The Barcelona Institute of Science and Technology, Campus UAB, E-08193 Bellaterra (Barcelona) Spain, Institució Catalana de Recerca i Estudis Avançats, E-08010 Barcelona, Spain
41. Kavli Institute for Cosmology, University of Cambridge, Madingley Road, Cambridge CB3 0HA, UK, National Center for Supercomputing Applications, 1205 West Clark St., Urbana, IL 61801, USA
42. Department of Astrophysical Sciences, Princeton University, Peyton Hall, Princeton, NJ 08544, USA
43. Department of Physics and Astronomy, Pevensey Building, University of Sussex, Brighton BN1 9QH, UK
44. School of Physics and Astronomy, University of Southampton, Southampton SO17 1BJ, UK
45. Brandeis University, Physics Department, 415 South Street, Waltham, MA 02453, USA
46. Computer Science and Mathematics Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA
47. National Center for Supercomputing Applications, 1205 West Clark St., Urbana, IL 61801, USA

Measurements of large-scale structure are interpreted using theoretical predictions for the matter distribution, including potential impacts of baryonic physics. We constrain the feedback strength of baryons jointly with cosmology using weak lensing and galaxy clustering observables (3 × 2pt) of Dark Energy Survey (DES) Year 1 data in combination with external information from baryon acoustic oscillations (BAO) and Planck cosmic microwave background polarization. Our baryon modelling is informed by a set of hydrodynamical simulations that span a variety of baryon scenarios; we span this space via a Principal Component (PC) analysis of the summary statistics extracted from these simulations. We show that at the level of DES Y1 constraining power, one PC is sufficient to describe the variation of baryonic effects in the observables, and the first PC amplitude (Q1) generally reflects the strength of baryon feedback. With the upper limit of Q1 prior being bound by the Illustris feedback scenarios, we reach $$\sim 20{{\ \rm per\ cent}}$$ improvement in the constraint of $$S_8=\sigma _8(\Omega _{\rm m}/0.3)^{0.5}=0.788^{+0.018}_{-0.021}$$ compared to the original DES 3 × 2pt analysis. This gain is driven by the inclusion of small-scale cosmic shear information down to 2.5 arcmin, which was excluded in previous DES analyses that did not model baryonic physics. We obtain $$S_8=0.781^{+0.014}_{-0.015}$$ for the combined DES Y1+Planck EE+BAO analysis with a non-informative Q1 prior. In terms of the baryon constraints, we measure $$Q_1=1.14^{+2.20}_{-2.80}$$ for DES Y1 only and $$Q_1=1.42^{+1.63}_{-1.48}$$ for DESY1+Planck EE+BAO, allowing us to exclude one of the most extreme AGN feedback hydrodynamical scenario at more than 2σ.

• Research Organization: Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); SLAC National Accelerator Lab., Menlo Park, CA (United States); Argonne National Lab. (ANL), Argonne, IL (United States); Carnegie Mellon Univ., Pittsburgh, PA (United States); Univ. of Michigan, Ann Arbor, MI (United States)
• Sponsoring Organization: USDOE Office of Science (SC), High Energy Physics (HEP); National Aeronautics and Space Administration (NASA); USDOE Office of Science (SC), Basic Energy Sciences (BES)
• Contributing Organization: The DES Collaboration; DES Collaboration
• Grant/Contract Number: SC0020215; SC0010118; AC02-07CH11359; AC05-00OR22725; AC02-06CH11357; AC02-76SF00515; 16-ADAP16-0116; SC0019193
• OSTI ID: 1770465
• Alternate ID(s): OSTI ID: 1659449; OSTI ID: 1798102; OSTI ID: 1798371; OSTI ID: 1817468; OSTI ID: 1837671; OSTI ID: 1872190
• Report Number(s): DES-2020-0557; FERMILAB-PUB-20-286-AE; arXiv:2007.15026
• Journal Information: Monthly Notices of the Royal Astronomical Society, Journal Name: Monthly Notices of the Royal Astronomical Society Vol. 502 Journal Issue: 4; ISSN 0035-8711
• Publisher: Oxford University Press
• Country of Publication: United Kingdom
• Language: English

Related Subjects

79 ASTRONOMY AND ASTROPHYSICS
cosmological parameters
cosmology: theory
large-scale structure of Universe