| Title: |
DESI DR2 results. II. Measurements of baryon acoustic oscillations and cosmological constraints |
| Authors: |
Abdul Karim, M.; Aguilar, J.; Ahlen, S.; Alam, S.; Allen, L.; Prieto, C. Allende; Alves, O.; Anand, A.; Andrade, U.; Armengaud, E.; Aviles, A.; Bailey, S.; Baltay, C.; Bansal, P.; Bault, A.; Behera, J.; BenZvi, S.; Bianchi, D.; Blake, C.; Brieden, S.; Brodzeller, A.; Brooks, D.; Buckley-Geer, E.; Burtin, E.; Calderon, R.; Canning, R.; Rosell, A. Carnero; Carrilho, P.; Casas, L.; Castander, F. J.; Charles, M.; Chaussidon, E.; Chaves-Montero, J.; Chebat, D.; Chen, X.; Claybaugh, T.; Cole, S.; Cooper, A. P.; Cuceu, A.; Dawson, K. S.; de la Macorra, A.; de Mattia, A.; Deiosso, N.; Della Costa, J.; Demina, R.; Dey, A.; Dey, B.; Ding, Z.; Doel, P.; Edelstein, J.; Eisenstein, D. J.; Elbers, W.; Fagrelius, P.; Fanning, K.; Fernández-García, E.; Ferraro, S.; Font-Ribera, A.; Forero-Romero, J. E.; Frenk, C. S.; Garcia-Quintero, C.; Garrison, L. H.; Gaztañaga, E.; Gil-Marín, H.; Gontcho, S. Gontcho A.; Gonzalez, D.; Gonzalez-Morales, A. X.; Gordon, C.; Green, D.; Gutierrez, G.; Guy, J.; Hadzhiyska, B.; Hahn, C.; He, S.; Herbold, M.; Herrera-Alcantar, H. K.; Ho, M. -F.; Honscheid, K.; Howlett, C.; Huterer, D.; Ishak, M.; Juneau, S.; Kamble, N. V.; Karaçayl��, N. G.; Kehoe, R.; Kent, S.; Kim, A. G.; Kirkby, D.; Kisner, T.; Koposov, S. E.; Kremin, A.; Krolewski, A.; Lahav, O.; Lamman, C.; Landriau, M.; Lang, D.; Lasker, J.; Le Goff, J. M.; Le Guillou, L.; Leauthaud, A.; Levi, M. E.; Li, Q.; Li, T. S.; Lodha, K.; Lokken, M.; Lozano-Rodríguez, F.; Magneville, C.; Manera, M.; Martini, P.; Matthewson, W. L.; Meisner, A.; Mena-Fernández, J.; Menegas, A.; Mergulhão, T.; Miquel, R.; Moustakas, J.; Muñoz-Gutiérrez, A.; Muñoz-Santos, D.; Myers, A. D.; Nadathur, S.; Naidoo, K.; Napolitano, L.; Newman, J. A.; Niz, G.; Noriega, H. E.; Paillas, E.; Palanque-Delabrouille, N.; Pan, J.; Peacock, J. A.; Ibanez, M. P.; Percival, W. J.; Pérez-Fernández, A.; Pérez-Ràfols, I.; Pieri, M. M.; Poppett, C.; Prada, F.; Rabinowitz, D.; Raichoor, A.; Ramírez-Pérez, C.; Rashkovetskyi, M.; Ravoux, C.; Rich, J.; Rocher, A.; Rockosi, C.; Rohlf, J.; Román-Herrera, J. O.; Ross, A. J.; Rossi, G.; Ruggeri, R.; Ruhlmann-Kleider, V.; Samushia, L.; Sanchez, E.; Sanders, N.; Schlegel, D.; Schubnell, M.; Seo, H.; Shafieloo, A.; Sharples, R.; Silber, J.; Sinigaglia, F.; Sprayberry, D.; Tan, T.; Tarlé, G.; Taylor, P.; Turner, W.; Ureña-López, L. A.; Vaisakh, R.; Valdes, F.; Valogiannis, G.; Vargas-Magaña, M.; Verde, L.; Walther, M.; Weaver, B. A.; Weinberg, D. H.; White, M.; Wolfson, M.; Yèche, C.; Yu, J.; Zaborowski, E. A.; Zarrouk, P.; Zhai, Z.; Zhang, H.; Zhao, C.; Zhao, G. B.; Zhou, R.; Zou, H.; null, null |
| Contributors: |
M. Abdul Karim; J. Aguilar; S. Ahlen; S. Alam; L. Allen; C.A. Prieto; O. Alve; A. Anand; U. Andrade; E. Armengaud; A. Avile; S. Bailey; C. Baltay; P. Bansal; A. Bault; J. Behera; S. Benzvi; D. Bianchi; C. Blake; S. Brieden; A. Brodzeller; D. Brook; E. Buckley-Geer; E. Burtin; R. Calderon; R. Canning; A.C. Rosell; P. Carrilho; L. Casa; F. . Castander; M. Charle; E. Chaussidon; J. Chaves-Montero; D. Chebat; X. Chen; T. Claybaugh; S. Cole; A. . Cooper; A. Cuceu; K. . Dawson; A. De La Macorra; A. De Mattia; N. Deiosso; J. Della Costa; R. Demina; A. Dey; B. Dey; Z. Ding; P. Doel; J. Edelstein; D. . Eisenstein; W. Elber; P. Fagreliu; K. Fanning; E. Fernández-García; S. Ferraro; A. Font-Ribera; J. . Forero-Romero; C. . Frenk; C. Garcia-Quintero; L. . Garrison; E. Gaztañaga; H. Gil-Marín; S.G.A. Gontcho; D. Gonzalez; A. . Gonzalez-Morale; C. Gordon; D. Green; G. Gutierrez; J. Guy; B. Hadzhiyska; C. Hahn; S. He; M. Herbold; H. . Herrera-Alcantar; M.-. Ho; K. Honscheid; C. Howlett; D. Huterer; M. Ishak; S. Juneau; N. . Kamble; N. . Karaçayl��; R. Kehoe; S. Kent; A. . Kim; D. Kirkby; T. Kisner; S. . Koposov; A. Kremin; A. Krolewski; O. Lahav; C. Lamman; M. Landriau; D. Lang; J. Lasker; J. . Le Goff; L. Le Guillou; A. Leauthaud; M. . Levi |
| Publisher Information: |
APS - American Physical Society |
| Publication Year: |
2025 |
| Collection: |
The University of Milan: Archivio Istituzionale della Ricerca (AIR) |
| Subject Terms: |
Settore PHYS-05/A - Astrofisica; cosmologia e scienza dello spazio |
| Description: |
We present baryon acoustic oscillation (BAO) measurements from more than 14 million galaxies and quasars drawn from the Dark Energy Spectroscopic Instrument (DESI) Data Release 2 (DR2), based on three years of operation. For cosmology inference, these galaxy measurements are combined with DESI Lyman-α forest BAO results presented in a companion paper (M. Abdul-Karim et al., companion paper, Phys. Rev. D 112, 083514 2025.). The DR2 BAO results are consistent with DESI DR1 and the Sloan Digital Sky Survey, and their distance-redshift relationship matches those from recent compilations of supernovae (SNe) over the same redshift range. The results are well described by a flat Λ cold dark matter (ΛCDM) model, but the parameters preferred by BAO are in mild, 2.3σ tension with those determined from the cosmic microwave background (CMB), although the DESI results are consistent with the acoustic angular scale θ* that is well measured by Planck. This tension is alleviated by dark energy with a time-evolving equation of state parametrized by w0 and wa, which provides a better fit to the data, with a favored solution in the quadrant with w0 >−1 and wa |
| Document Type: |
article in journal/newspaper |
| Language: |
English |
| Relation: |
volume:112; issue:8; firstpage:1; lastpage:40; numberofpages:40; journal:PHYSICAL REVIEW D; https://hdl.handle.net/2434/1190136 |
| DOI: |
10.1103/tr6y-kpc6 |
| Availability: |
https://hdl.handle.net/2434/1190136; https://doi.org/10.1103/tr6y-kpc6 |
| Rights: |
info:eu-repo/semantics/openAccess ; license:Creative commons ; license uri:http://creativecommons.org/licenses/by/4.0/ |
| Accession Number: |
edsbas.ECA7632 |
| Database: |
BASE |