A data compression and optimal galaxy weights scheme for Dark Energy Spectroscopic Instrument and weak lensing data sets

Journal Article · 05 June 2023 · Monthly Notices of the Royal Astronomical Society

DOI: https://doi.org/10.1093/mnras/stad1651 · OSTI ID:2281217

Ruggeri, Rossana  ^[1]; Blake, Chris ^[2]; DeRose, Joseph ^[3]; Garcia-Quintero, C. ^[4]; Hadzhiyska, B.  ^[5]; Ishak, M. ^[4]; Jeffrey, N. ^[6]; Joudaki, S. ^[7]; Krolewski, Alex ^[8]; Lange, J. U.  ^[9]; Leauthaud, A.  ^[10]; Porredon, A. ^[11]; Rossi, G. ^[12]; Saulder, C. ^[13]; Xhakaj, E.  ^[10]; Brooks, D. ^[6]; Dhungana, G. ^[14]; de la Macorra, A. ^[15]; Doel, P. ^[6]; Gontcho, S. A.  ^[16] ; Kremin, A. ^[3]; Landriau, M. ^[3]; Miquel, R. ^[17]; Poppett, C. ^[18]; Prada, F. ^[19]; Tarlé, Gregory ^[20]

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1. School of Mathematics and Physics, University of Queensland , QLD 4072 , Australia; Centre for Astrophysics & Supercomputing, Swinburne University of Technology , P.O. Box 218, Hawthorn, VIC 3122 , Australia
2. Centre for Astrophysics & Supercomputing, Swinburne University of Technology , P.O. Box 218, Hawthorn, VIC 3122 , Australia
3. Lawrence Berkeley National Laboratory , 1 Cyclotron Road, Berkeley, CA 94720 , USA
4. Department of Physics, The University of Texas at Dallas , 800 W. Campbell Rd, Richardson, TX 75080 , USA
5. Center for Astrophysics | Harvard & Smithsonian , 60 Garden Street, Cambridge, MA 02138 , USA
6. Department of Physics & Astronomy, University College London , Gower Street, London, WC1E 6BT , UK
7. Department of Physics and Astronomy, University of Waterloo , 200 University Ave W, Waterloo, ON N2L 3G1 , Canada
8. Department of Physics and Astronomy, University of Waterloo , 200 University Ave W, Waterloo, ON N2L 3G1 , Canada; Perimeter Institute for Theoretical Physics , 31 Caroline St. North, Waterloo, ON N2L 2Y5 , Canada; Waterloo Centre for Astrophysics, University of Waterloo , 200 University Ave W, Waterloo, ON N2L 3G1 , Canada
9. Kavli Institute for Particle Astrophysics and Cosmology, Stanford University , Menlo Park, CA 94305 , USA; Physics Department, Stanford University , Stanford, CA 93405 , USA
10. Department of Astronomy and Astrophysics, University of California , Santa Cruz, 1156 High Street, Santa Cruz, CA 95065 , USA
11. 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
12. Department of Physics and Astronomy, Sejong University , Seoul 143-747 , Korea
13. Korea Astronomy and Space Science Institute , 776, Daedeokdae-ro, Yuseong-gu, Daejeon 34055 , Republic of Korea
14. Department of Physics, Southern Methodist University , 3215 Daniel Avenue, Dallas, TX 75275 , USA
15. Instituto de Física, Universidad Nacional Autónoma de México , Cd. de México C.P. 04510 , México
16. Lawrence Berkeley National Laboratory , 1 Cyclotron Road, Berkeley, CA 94720 , USA; Department of Physics and Astronomy, University of Rochester , 500 Joseph C. Wilson Boulevard, Rochester, NY 14627 , USA
17. Institució Catalana de Recerca i Estudis Avançats , Passeig de Lluís Companys, 23, E-08010 Barcelona , Spain; Institut de Física d’Altes Energies (IFAE), The Barcelona Institute of Science and Technology , Campus UAB, E-08193 Bellaterra Barcelona , Spain
18. Lawrence Berkeley National Laboratory , 1 Cyclotron Road, Berkeley, CA 94720 , USA; Space Sciences Laboratory, University of California , Berkeley, 7 Gauss Way, Berkeley, CA 94720 , USA; University of California , Berkeley, 110 Sproul Hall #5800 Berkeley, CA 94720 , USA
19. Instituto de Astrofisica de Andalucía, Glorieta de la Astronomía , s/n, E-18008 Granada , Spain
20. University of Michigan , Ann Arbor, MI 48109 , USA

Combining different observational probes, such as galaxy clustering and weak lensing, is a promising technique for unveiling the physics of the Universe with upcoming dark energy experiments. The galaxy redshift sample from the Dark Energy Spectroscopic Instrument (DESI) will have a significant overlap with major ongoing imaging surveys specifically designed for weak lensing measurements: the Kilo-Degree Survey (KiDS), the Dark Energy Survey (DES), and the Hyper Suprime-Cam (HSC) survey. In this work, we analyse simulated redshift and lensing catalogues to establish a new strategy for combining high-quality cosmological imaging and spectroscopic data, in view of the first-year data assembly analysis of DESI. In a test case fitting for a reduced parameter set, we employ an optimal data compression scheme able to identify those aspects of the data that are most sensitive to cosmological information and amplify them with respect to other aspects of the data. We find this optimal compression approach is able to preserve all the information related to the growth of structures.

• Research Organization: Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States). National Energy Research Scientific Computing Center (NERSC)
• Sponsoring Organization: USDOE Office of Science (SC), High Energy Physics (HEP); National Science Foundation (NSF)
• Contributing Organization: DESI Collaboration
• Grant/Contract Number: AC02-05CH11231
• OSTI ID: 2281217
• Alternate ID(s): OSTI ID: 2350765
• Journal Information: Monthly Notices of the Royal Astronomical Society, Journal Name: Monthly Notices of the Royal Astronomical Society Journal Issue: 3 Vol. 525; ISSN 0035-8711
• Publisher: Oxford University PressCopyright Statement
• Country of Publication: United States
• Language: English