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DESI-DR1 $3 \times 2$-pt analysis: consistent cosmology across weak lensing surveys

Fuente: arXiv

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Dettagli Bibliografici
Autori principali:	Porredon, A., Blake, C., Lange, J. U., Emas, N., Aguilar, J., Ahlen, S., Bera, A., Bianchi, D., Brooks, D., Castander, F. J., Claybaugh, T., Nadal, J. Coloma, Cuceu, A., Dawson, K. S., de la Macorra, A., Dey, Biprateep, Doel, P., Elliott, A., Ferraro, S., Font-Ribera, A., Forero-Romero, J. E., Garcia-Quintero, C., Gaztañaga, E., Gontcho, S. Gontcho A, Gutierrez, G., Guy, J., Hadzhiyska, B., Herrera-Alcantar, H. K., Heydenreich, S., Honscheid, K., Howlett, C., Huterer, D., Ishak, M., Joudaki, S., Joyce, R., Kirkby, D., Kremin, A., Krolewski, A., Lahav, O., Lamman, C., Landriau, M., Guillou, L. Le, Leauthaud, A., Levi, M. E., Manera, M., Meisner, A., Miquel, R., Nadathur, S., Newman, J. A., Niz, G., Palanque-Delabrouille, N., Percival, W. J., Poppett, C., Prada, F., Pérez-Ràfols, I., Robertson, A., Rossi, G., Ruggeri, R., Sanchez, E., Saulder, C., Schlegel, D., Schubnell, M., Semenaite, A., Seo, H., Silber, J., Souki, A., Sprayberry, D., Tarlé, G., Vargas-Magaña, M., Weaver, B. A., Zhou, C., Zhou, R., Zou, H.
Natura:	Preprint
Pubblicazione:	2025
Soggetti:	Cosmology and Nongalactic Astrophysics
Accesso online:	Acceder al recurso
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_version_	1866911627480137728
author	Porredon, A. Blake, C. Lange, J. U. Emas, N. Aguilar, J. Ahlen, S. Bera, A. Bianchi, D. Brooks, D. Castander, F. J. Claybaugh, T. Nadal, J. Coloma Cuceu, A. Dawson, K. S. de la Macorra, A. Dey, Biprateep Doel, P. Elliott, A. Ferraro, S. Font-Ribera, A. Forero-Romero, J. E. Garcia-Quintero, C. Gaztañaga, E. Gontcho, S. Gontcho A Gutierrez, G. Guy, J. Hadzhiyska, B. Herrera-Alcantar, H. K. Heydenreich, S. Honscheid, K. Howlett, C. Huterer, D. Ishak, M. Joudaki, S. Joyce, R. Kirkby, D. Kremin, A. Krolewski, A. Lahav, O. Lamman, C. Landriau, M. Guillou, L. Le Leauthaud, A. Levi, M. E. Manera, M. Meisner, A. Miquel, R. Nadathur, S. Newman, J. A. Niz, G. Palanque-Delabrouille, N. Percival, W. J. Poppett, C. Prada, F. Pérez-Ràfols, I. Robertson, A. Rossi, G. Ruggeri, R. Sanchez, E. Saulder, C. Schlegel, D. Schubnell, M. Semenaite, A. Seo, H. Silber, J. Souki, A. Sprayberry, D. Tarlé, G. Vargas-Magaña, M. Weaver, B. A. Zhou, C. Zhou, R. Zou, H.
author_facet	Porredon, A. Blake, C. Lange, J. U. Emas, N. Aguilar, J. Ahlen, S. Bera, A. Bianchi, D. Brooks, D. Castander, F. J. Claybaugh, T. Nadal, J. Coloma Cuceu, A. Dawson, K. S. de la Macorra, A. Dey, Biprateep Doel, P. Elliott, A. Ferraro, S. Font-Ribera, A. Forero-Romero, J. E. Garcia-Quintero, C. Gaztañaga, E. Gontcho, S. Gontcho A Gutierrez, G. Guy, J. Hadzhiyska, B. Herrera-Alcantar, H. K. Heydenreich, S. Honscheid, K. Howlett, C. Huterer, D. Ishak, M. Joudaki, S. Joyce, R. Kirkby, D. Kremin, A. Krolewski, A. Lahav, O. Lamman, C. Landriau, M. Guillou, L. Le Leauthaud, A. Levi, M. E. Manera, M. Meisner, A. Miquel, R. Nadathur, S. Newman, J. A. Niz, G. Palanque-Delabrouille, N. Percival, W. J. Poppett, C. Prada, F. Pérez-Ràfols, I. Robertson, A. Rossi, G. Ruggeri, R. Sanchez, E. Saulder, C. Schlegel, D. Schubnell, M. Semenaite, A. Seo, H. Silber, J. Souki, A. Sprayberry, D. Tarlé, G. Vargas-Magaña, M. Weaver, B. A. Zhou, C. Zhou, R. Zou, H.
contents	We present a joint cosmological analysis of projected galaxy clustering observations from the Dark Energy Spectroscopic Instrument Data Release 1 (DESI-DR1), and overlapping weak gravitational lensing observations from three datasets: the Kilo-Degree Survey (KiDS-1000), the Dark Energy Survey (DES-Y3), and the Hyper-Suprime-Cam Survey (HSC-Y3). This combination of large-scale structure probes allows us to measure a set of $3 \times 2$-pt correlation functions, breaking the degeneracies between parameters in cosmological fits to individual observables. We obtain mutually-consistent constraints on the parameter $S_8 = σ_8 \sqrt{Ω_{\rm m}/0.3} = 0.786^{+0.022}_{-0.019}$ from the combination of DESI-DR1 and DES-Y3, $S_8 = 0.760^{+0.020}_{-0.018}$ from KiDS-1000, and $S_8 = 0.771^{+0.026}_{-0.027}$ from HSC-Y3. These parameter determinations are consistent with fits to the Planck Cosmic Microwave Background dataset, albeit with $1.5-2σ$ lower values in the $S_8-Ω_{\rm m}$ plane. We perform our analysis with a unified pipeline tailored to the requirements of each cosmic shear survey, which self-consistently determines cosmological and astrophysical parameters. We generate an analytical covariance matrix for the correlation data including all cross-covariances between probes, and we design a new blinding procedure to safeguard our analysis against confirmation bias, whilst leaving goodness-of-fit statistics unchanged. Our study is part of a suite of papers that present joint cosmological analyses of DESI-DR1 and weak gravitational lensing datasets.
format	Preprint
id	arxiv_https___arxiv_org_abs_2512_15960
institution	arXiv
publishDate	2025
record_format	arxiv
spellingShingle	DESI-DR1 $3 \times 2$-pt analysis: consistent cosmology across weak lensing surveys Porredon, A. Blake, C. Lange, J. U. Emas, N. Aguilar, J. Ahlen, S. Bera, A. Bianchi, D. Brooks, D. Castander, F. J. Claybaugh, T. Nadal, J. Coloma Cuceu, A. Dawson, K. S. de la Macorra, A. Dey, Biprateep Doel, P. Elliott, A. Ferraro, S. Font-Ribera, A. Forero-Romero, J. E. Garcia-Quintero, C. Gaztañaga, E. Gontcho, S. Gontcho A Gutierrez, G. Guy, J. Hadzhiyska, B. Herrera-Alcantar, H. K. Heydenreich, S. Honscheid, K. Howlett, C. Huterer, D. Ishak, M. Joudaki, S. Joyce, R. Kirkby, D. Kremin, A. Krolewski, A. Lahav, O. Lamman, C. Landriau, M. Guillou, L. Le Leauthaud, A. Levi, M. E. Manera, M. Meisner, A. Miquel, R. Nadathur, S. Newman, J. A. Niz, G. Palanque-Delabrouille, N. Percival, W. J. Poppett, C. Prada, F. Pérez-Ràfols, I. Robertson, A. Rossi, G. Ruggeri, R. Sanchez, E. Saulder, C. Schlegel, D. Schubnell, M. Semenaite, A. Seo, H. Silber, J. Souki, A. Sprayberry, D. Tarlé, G. Vargas-Magaña, M. Weaver, B. A. Zhou, C. Zhou, R. Zou, H. Cosmology and Nongalactic Astrophysics We present a joint cosmological analysis of projected galaxy clustering observations from the Dark Energy Spectroscopic Instrument Data Release 1 (DESI-DR1), and overlapping weak gravitational lensing observations from three datasets: the Kilo-Degree Survey (KiDS-1000), the Dark Energy Survey (DES-Y3), and the Hyper-Suprime-Cam Survey (HSC-Y3). This combination of large-scale structure probes allows us to measure a set of $3 \times 2$-pt correlation functions, breaking the degeneracies between parameters in cosmological fits to individual observables. We obtain mutually-consistent constraints on the parameter $S_8 = σ_8 \sqrt{Ω_{\rm m}/0.3} = 0.786^{+0.022}_{-0.019}$ from the combination of DESI-DR1 and DES-Y3, $S_8 = 0.760^{+0.020}_{-0.018}$ from KiDS-1000, and $S_8 = 0.771^{+0.026}_{-0.027}$ from HSC-Y3. These parameter determinations are consistent with fits to the Planck Cosmic Microwave Background dataset, albeit with $1.5-2σ$ lower values in the $S_8-Ω_{\rm m}$ plane. We perform our analysis with a unified pipeline tailored to the requirements of each cosmic shear survey, which self-consistently determines cosmological and astrophysical parameters. We generate an analytical covariance matrix for the correlation data including all cross-covariances between probes, and we design a new blinding procedure to safeguard our analysis against confirmation bias, whilst leaving goodness-of-fit statistics unchanged. Our study is part of a suite of papers that present joint cosmological analyses of DESI-DR1 and weak gravitational lensing datasets.
title	DESI-DR1 $3 \times 2$-pt analysis: consistent cosmology across weak lensing surveys
topic	Cosmology and Nongalactic Astrophysics
url	https://arxiv.org/abs/2512.15960