Dark Energy Survey Year 3 results: magnification modelling and impact on cosmological constraints from galaxy clustering and galaxy–galaxy lensing

Journal Article · 09 June 2023 · Monthly Notices of the Royal Astronomical Society

DOI: https://doi.org/10.1093/mnras/stad1594 · OSTI ID:1889221

Elvin-Poole, J.  ^[1]; MacCrann, N.  ^[2]; Everett, S. ^[3]; Prat, J.  ^[4]; Rykoff, E. S. ^[5]; De Vicente, J.  ^[6]; Yanny, B. ^[7]; Herner, K. ^[7]; Ferté, A. ^[3]; Valentino, E. Di  ^[8]; Choi, A. ^[9]; Burke, D. L. ^[5]; Sevilla-Noarbe, I. ^[6]; Alarcon, A. ^[10]; Alves, O. ^[11]; Amon, A. ^[12]; Andrade-Oliveira, F. ^[11]; Baxter, E. ^[13]; Bechtol, K. ^[14]; Becker, M. R. ^[10] ; Bernstein, G. M. ^[15]; Blazek, J. ^[16]; Camacho, H. ^[17]; Campos, A. ^[18]; Rosell, A. Carnero ^[19]; Kind, M. Carrasco ^[20]; Cawthon, R. ^[21]; Chang, C. ^[4]; Chen, R. ^[22]; Cordero, J. ^[8]; Crocce, M. ^[23]; Davis, C. ^[24]; DeRose, J. ^[25]; Diehl, H. T. ^[7]; Dodelson, S. ^[26]; Doux, C. ^[27]; Drlica-Wagner, A. ^[28]; Eckert, K. ^[15]; Eifler, T. F. ^[29]; Elsner, F. ^[30]; Fang, X. ^[31]; Fosalba, P. ^[23]; Friedrich, O. ^[32]; Gatti, M. ^[15]; Giannini, G. ^[33]; Gruen, D. ^[34]; Gruendl, R. A. ^[20]; Harrison, I. ^[35]; Hartley, W. G. ^[36]; Huang, H. ^[37]; Huff, E. M. ^[3]; Huterer, D. ^[11]; Krause, E. ^[38]; Kuropatkin, N. ^[7]; Leget, P-F ^[24]; Lemos, P. ^[39]; Liddle, A. R. ^[40]; McCullough, J. ^[24]; Muir, J. ^[41]; Myles, J. ^[42]; Navarro-Alsina, A. ^[43]; Pandey, S. ^[15]; Park, Y. ^[44]; Porredon, A. ^[45]; Raveri, M. ^[46]; Rodriguez-Monroy, M. ^[47]; Rollins, R. P. ^[8]; Roodman, A. ^[5]; Rosenfeld, R. ^[48]; Ross, A. J. ^[49]; Sánchez, C. ^[15]; Sanchez, J. ^[7]; Secco, L. F. ^[50]; Sheldon, E. ^[51]; Shin, T. ^[52]; Troxel, M. A. ^[22]; Tutusaus, I. ^[53]; Varga, T. N. ^[54]; Weaverdyck, N. ^[55]; Wechsler, R. H. ^[56]; Yin, B. ^[18]; Zhang, Y. ^[57]; Zuntz, J. ^[58]; Aguena, M. ^[59]; Avila, S. ^[60]; Bacon, D. ^[61]; Bertin, E. ^[62]; Bocquet, S. ^[34]; Brooks, D. ^[30]; García-Bellido, J. ^[63]; Honscheid, K. ^[64]; Jarvis, M. ^[15]; Li, T. S. ^[65]; Mena-Fernández, J. ^[6]; To, C. ^[49]; Wilkinson, R. D. ^[66]

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1. The Ohio State University, Columbus, OH (United States); University of Waterloo, ON (Canada). DES Collaboration.et al.
2. Department of Applied Mathematics and Theoretical Physics, University of Cambridge , Cambridge CB3 0WA, UK
3. Jet Propulsion Laboratory, California Institute of Technology , 4800 Oak Grove Dr, Pasadena, CA 91109, USA
4. Department of Astronomy and Astrophysics, University of Chicago , Chicago, IL 60637, USA; Kavli Institute for Cosmological Physics, University of Chicago , Chicago, IL 60637, USA
5. Kavli Institute for Particle Astrophysics & Cosmology , PO Box 2450, Stanford University, Stanford, CA 94305, USA; SLAC National Accelerator Laboratory , Menlo Park, CA 94025, USA
6. Centro de Investigaciones Energéticas , Medioambientales y Tecnológicas (CIEMAT), Madrid, 28040, Spain
7. Fermi National Accelerator Laboratory , PO Box 500, Batavia, IL 60510, USA
8. Jodrell Bank Center for Astrophysics, School of Physics and Astronomy, University of Manchester , Oxford Road, Manchester, M13 9PL, UK
9. California Institute of Technology , 1200 East California Blvd, MC 249-17, Pasadena, CA 91125, USA
10. Argonne National Laboratory , 9700 South Cass Avenue, Lemont, IL 60439, USA
11. Department of Physics, University of Michigan , Ann Arbor, MI 48109, USA
12. Institute of Astronomy, University of Cambridge , Madingley Road, Cambridge CB3 0HA, UK; Kavli Institute for Cosmology, University of Cambridge , Madingley Road, Cambridge CB3 0HA, UK
13. Institute for Astronomy, University of Hawai’i , 2680 Woodlawn Drive, Honolulu, HI 96822, USA
14. Physics Department , 2320 Chamberlin Hall, University of Wisconsin-Madison, 1150 University Avenue Madison, WI 53706-1390, USA
15. Department of Physics and Astronomy, University of Pennsylvania , Philadelphia, PA 19104, USA
16. Department of Physics, Northeastern University , Boston, MA 02115, USA
17. Instituto de Física Teórica, Universidade Estadual Paulista , São Paulo, 01140-070, Brazil; Laboratório Interinstitucional de e-Astronomia - LIneA , Rua Gal. José Cristino 77, Rio de Janeiro, RJ - 20921-400, Brazil
18. Department of Physics, Carnegie Mellon University , Pittsburgh, Pennsylvania 15312, USA
19. Laboratório Interinstitucional de e-Astronomia - LIneA , Rua Gal. José Cristino 77, Rio de Janeiro, RJ - 20921-400, Brazil; Instituto de Astrofisica de Canarias , E-38205 La Laguna, Tenerife, Spain; Universidad de La Laguna , Dpto. Astrofísica, E-38206 La Laguna, Tenerife, Spain
20. Center for Astrophysical Surveys, National Center for Supercomputing Applications , 1205 West Clark St., Urbana, IL 61801, USA; Department of Astronomy, University of Illinois at Urbana-Champaign , 1002 W. Green Street, Urbana, IL 61801, USA
21. Physics Department, William Jewell College , Liberty, MO 64068, USA
22. Department of Physics, Duke University Durham , NC 27708, USA
23. 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
24. Kavli Institute for Particle Astrophysics & Cosmology , PO Box 2450, Stanford University, Stanford, CA 94305, USA
25. Lawrence Berkeley National Laboratory , 1 Cyclotron Road, Berkeley, CA 94720, USA
26. Department of Physics, Carnegie Mellon University , Pittsburgh, Pennsylvania 15312, USA; NSF AI Planning Institute for Physics of the Future, Carnegie Mellon University , Pittsburgh, PA 15213, USA
27. Université Grenoble Alpes, CNRS , LPSC-IN2P3, F-38000 Grenoble, France
28. Department of Astronomy and Astrophysics, University of Chicago , Chicago, IL 60637, USA; Fermi National Accelerator Laboratory , PO Box 500, Batavia, IL 60510, USA; Kavli Institute for Cosmological Physics, University of Chicago , Chicago, IL 60637, USA
29. Department of Astronomy/Steward Observatory, University of Arizona , 933 North Cherry Avenue, Tucson, AZ 85721-0065, USA; Jet Propulsion Laboratory, California Institute of Technology , 4800 Oak Grove Dr, Pasadena, CA 91109, USA
30. Department of Physics & Astronomy, University College London , Gower Street, London, WC1E 6BT, UK
31. Department of Astronomy, University of California , Berkeley, 501 Campbell Hall, Berkeley, CA 94720, USA; Department of Astronomy/Steward Observatory, University of Arizona , 933 North Cherry Avenue, Tucson, AZ 85721-0065, USA
32. Kavli Institute for Cosmology, University of Cambridge , Madingley Road, Cambridge CB3 0HA, UK
33. Institut de Física d’Altes Energies (IFAE), The Barcelona Institute of Science and Technology , Campus UAB, E-08193 Bellaterra (Barcelona) Spain
34. University Observatory, Faculty of Physics , Ludwig-Maximilians-Universität, Scheinerstr. 1, D-81679 Munich, Germany
35. School of Physics and Astronomy, Cardiff University , CF24 3AA, UK
36. Department of Astronomy, University of Geneva , ch. d’Écogia 16, CH-1290 Versoix, Switzerland
37. Department of Astronomy/Steward Observatory, University of Arizona , 933 North Cherry Avenue, Tucson, AZ 85721-0065, USA; Department of Physics, University of Arizona , Tucson, AZ 85721, USA
38. Department of Astronomy/Steward Observatory, University of Arizona , 933 North Cherry Avenue, Tucson, AZ 85721-0065, USA
39. Department of Physics & Astronomy, University College London , Gower Street, London, WC1E 6BT, UK; Department of Physics and Astronomy, Pevensey Building, University of Sussex , Brighton, BN1 9QH, UK
40. Instituto de Astrofísica e Ciências do Espaço, Faculdade de Ciências, Universidade de Lisboa , P-1769-016 Lisboa, Portugal
41. Perimeter Institute for Theoretical Physics , 31 Caroline St. North, Waterloo, ON N2L 2Y5, Canada
42. Department of Physics, Stanford University , 382 Via Pueblo Mall, Stanford, CA 94305, USA; Kavli Institute for Particle Astrophysics & Cosmology , PO Box 2450, Stanford University, Stanford, CA 94305, USA; SLAC National Accelerator Laboratory , Menlo Park, CA 94025, USA
43. Instituto de Física Gleb Wataghin, Universidade Estadual de Campinas , 13083-859, Campinas, SP, Brazil
44. Kavli Institute for the Physics and Mathematics of the Universe (WPI), UTIAS, The University of Tokyo , Kashiwa, Chiba 277-8583, Japan
45. 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; Institute for Astronomy, University of Edinburgh , Edinburgh EH9 3HJ, UK
46. Université Grenoble Alpes, CNRS , LPSC-IN2P3, F-38000 Grenoble, France; Department of Physics and Astronomy, University of Pennsylvania , Philadelphia, PA 19104, USA
47. Université Grenoble Alpes, CNRS , LPSC-IN2P3, F-38000 Grenoble, France; Centro de Investigaciones Energéticas , Medioambientales y Tecnológicas (CIEMAT), Madrid, 28040, Spain
48. ICTP South American Institute for Fundamental Research Instituto de Física Teórica, Universidade Estadual Paulista , São Paulo, 01140-070, Brazil; Laboratório Interinstitucional de e-Astronomia - LIneA , Rua Gal. José Cristino 77, Rio de Janeiro, RJ - 20921-400, Brazil
49. Center for Cosmology and Astro-Particle Physics, The Ohio State University , Columbus, OH 43210, USA
50. Kavli Institute for Cosmological Physics, University of Chicago , Chicago, IL 60637, USA
51. Brookhaven National Laboratory , Bldg 510, Upton, NY 11973, USA
52. Department of Physics and Astronomy, Stony Brook University , Stony Brook, NY 11794, USA
53. Département de Physique Théorique and Center for Astroparticle Physics, Université de Genève , 24 quai Ernest Ansermet, CH-1211 Geneva, Switzerland; 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
54. Excellence Cluster Origins , Boltzmannstr. 2, D-85748 Garching, Germany; 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
55. Department of Physics, University of Michigan , Ann Arbor, MI 48109, USA; Lawrence Berkeley National Laboratory , 1 Cyclotron Road, Berkeley, CA 94720, USA
56. Kavli Institute for Particle Astrophysics & Cosmology , PO Box 2450, Stanford University, Stanford, CA 94305, USA; SLAC National Accelerator Laboratory , Menlo Park, CA 94025, USA; Department of Physics, Stanford University , 382 Via Pueblo Mall, Stanford, CA 94305, USA
57. 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
58. Institute for Astronomy, University of Edinburgh , Edinburgh EH9 3HJ, UK
59. Laboratório Interinstitucional de e-Astronomia - LIneA , Rua Gal. José Cristino 77, Rio de Janeiro, RJ - 20921-400, Brazil
60. Université Grenoble Alpes, CNRS , LPSC-IN2P3, F-38000 Grenoble, France; Instituto de Fisica Teorica UAM/CSIC, Universidad Autonoma de Madrid , E-28049 Madrid, Spain
61. Institute of Cosmology and Gravitation, University of Portsmouth , Portsmouth, PO1 3FX, UK
62. 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
63. Instituto de Fisica Teorica UAM/CSIC, Universidad Autonoma de Madrid , E-28049 Madrid, Spain
64. 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
65. Department of Astronomy and Astrophysics, University of Toronto , 50 St. George Street, Toronto ON, M5S 3H4, Canada
66. Department of Physics and Astronomy, Pevensey Building, University of Sussex , Brighton, BN1 9QH, UK

We study the effect of magnification in the Dark Energy Survey Year 3 analysis of galaxy clustering and galaxy–galaxy lensing, using two different lens samples: a sample of luminous red galaxies, redMaGiC, and a sample with a redshift-dependent magnitude limit, MagLim. Here we account for the effect of magnification on both the flux and size selection of galaxies, accounting for systematic effects using the Balrog image simulations. We estimate the impact of magnification on the galaxy clustering and galaxy–galaxy lensing cosmology analysis, finding it to be a significant systematic for the MagLim sample. We show cosmological constraints from the galaxy clustering autocorrelation and galaxy–galaxy lensing signal with different magnifications priors, finding broad consistency in cosmological parameters in ΛCDM and wCDM. However, when magnification bias amplitude is allowed to be free, we find the two-point correlation functions prefer a different amplitude to the fiducial input derived from the image simulations. We validate the magnification analysis by comparing the cross-clustering between lens bins with the prediction from the baseline analysis, which uses only the autocorrelation of the lens bins, indicating that systematics other than magnification may be the cause of the discrepancy. We show that adding the cross-clustering between lens redshift bins to the fit significantly improves the constraints on lens magnification parameters and allows uninformative priors to be used on magnification coefficients, without any loss of constraining power or prior volume concerns.

• Research Organization: Argonne National Laboratory (ANL), Argonne, IL (United States); Brookhaven National Laboratory (BNL), Upton, NY (United States); Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States); Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States); SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)
• Sponsoring Organization: USDOE Office of Science (SC), High Energy Physics (HEP)
• Contributing Organization: DES collaboration
• Grant/Contract Number: AC02-07CH11359
• OSTI ID: 1889221
• Alternate ID(s): OSTI ID: 2305492; OSTI ID: 2350557; OSTI ID: 2368760
• Report Number(s): FERMILAB-PUB--22-714-AD-PPD-SCD; arXiv:2209.09782; {oai:inspirehep.net:2154439,"Journal ID: ISSN 0035-8711"}
• Journal Information: Monthly Notices of the Royal Astronomical Society, Journal Name: Monthly Notices of the Royal Astronomical Society Journal Issue: 3 Vol. 523; ISSN 0035-8711
• Publisher: Oxford University PressCopyright Statement
• Country of Publication: United States
• Language: English