Препринт

DESI 2024: reconstructing dark energy using crossing statistics with DESI DR1 BAO data

R. CalderónKorea Astronomy and Space Science Institute (KASI), Daejeon (Korea, Republic of)K. LodhaUniversity of Science and Technology (Korea, Republic of)A. ShafielooUniversity of Science and Technology (Korea, Republic of)E. LinderUniversity of California, Berkeley, CA (United States)Wuhyun SohnKorea Astronomy and Space Science Institute (KASI), Daejeon (Korea, Republic of)Arnaud de MattiaUniv. Paris-Saclay, Gif-sur-Yvette (France)Jorge L. Cervantes–CotaNational Institute of Nuclear Research (Mexico)Robert CrittendenUniv. of Portsmouth (United Kingdom)T. M. DavisUniv. of Queensland, Brisbane, QLD (Australia)M IshakUniv. of Texas at Dallas, Richardson, TX (United States)Alex KimLawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)William L. MatthewsonKorea Astronomy and Space Science Institute (KASI), Daejeon (Korea, Republic of)Gustavo NizInstituto Avanzado de Cosmologia (IAC) (Mexico)S. ParkKorea Astronomy and Space Science Institute (KASI), Daejeon (Korea, Republic of)J. AguilarLawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)S. AhlenBoston Univ., MA (United States)S. W. AllenSLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)D. BrooksUniv. College London (United Kingdom)T. ClaybaughLawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)Axel de la MacorraUniv. Nacional Autonoma de Mexico (UNAM), Mexico City (Mexico)Arjun DeyNational Optical-Infrared Astronomy Research Laboratory (NOIRLab), Tucson, AZ (United States)Biprateep DeyUniv. of Pittsburgh, PA (United States)P. DoelUniv. College London (United Kingdom)J. E. Forero-RomeroUniv. of the Andes (Colombia)E. GaztañagaUniv. of Portsmouth (United Kingdom)Satya Gontcho A GontchoLawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)K. HonscheidThe Ohio State Univ., Columbus, OH (United States)Cullan HowlettUniv. of Queensland, Brisbane, QLD (Australia)S. JuneauNational Optical-Infrared Astronomy Research Laboratory (NOIRLab), Tucson, AZ (United States)Anthony KreminLawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)Martin LandriauLawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)L. Le GuillouCentre National de la Recherche Scientifique (CNRS) (France)M. E. LeviLawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)Marc ManeraUniv. Autonoma de Barcelona (Spain). Inst. de Fisica d'Altes Energies (IFAE)R. MiquelUniv. Autonoma de Barcelona (Spain). Inst. Catalana de Recerca i Estudis Avancats (ICREA) and Inst. de Fisica d'Altes Energies (IFAE)John MoustakasSiena College, Loudonville, NY (United States)J. A. NewmanUniv. of Pittsburgh, PA (United States)N. Palanque‐DelabrouilleUniv. Paris-Saclay, Gif-sur-Yvette (France)Will J. PercivalPerimeter Inst. for Theoretical Physics, Waterloo, ON (Canada)Claire PoppettUniversity of California, Berkeley, CA (United States)Francisco PradaSpanish National Research Council (CSIC) (Spain). Institute of Astrophysics of AndalusiaMehdi RezaieKansas State Univ., Manhattan, KS (United States)Graziano RossiSejong Univ., Seoul (Korea, Republic of)V. Ruhlmann-KleiderUniv. Paris-Saclay, Gif-sur-Yvette (France)E. SánchezResearch Centre for Energy, Environment and Technology (CIEMAT), Madrid (Spain)David J. SchlegelLawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)M. SchubnellUniv. of Michigan, Ann Arbor, MI (United States)Hee‐Jong SeoOhio Univ., Athens, OH (United States)David SprayberryNational Optical-Infrared Astronomy Research Laboratory (NOIRLab), Tucson, AZ (United States)G. TarléUniv. of Michigan, Ann Arbor, MI (United States)Paul A. TaylorThe Ohio State Univ., Columbus, OH (United States)M. Vargas-MagañaUniv. Nacional Autonoma de Mexico (UNAM), Mexico City (Mexico)B. A. WeaverNational Optical-Infrared Astronomy Research Laboratory (NOIRLab), Tucson, AZ (United States)Pauline ZarroukCentre National de la Recherche Scientifique (CNRS) (France)H. ZouChinese Academy of Sciences (CAS), Beijing (China)

2024en

ABI

Аннотация

Abstract We implement Crossing Statistics to reconstruct in a model-agnostic manner the expansion history of the universe and properties of dark energy, using DESI Data Release 1 (DR1) BAO data in combination with one of three different supernova compilations (PantheonPlus, Union3, and DES-SN5YR) and Planck CMB observations. Our results hint towards an evolving and emergent dark energy behaviour, with negligible presence of dark energy at z ≳ 1, at varying significance depending on data sets combined. In all these reconstructions, the cosmological constant lies outside the 95% confidence intervals for some redshift ranges. This dark energy behaviour, reconstructed using Crossing Statistics, is in agreement with results from the conventional w 0 – w a dark energy equation of state parametrization reported in the DESI Key cosmology paper. Our results add an extensive class of model-agnostic reconstructions with acceptable fits to the data, including models where cosmic acceleration slows down at low redshifts. We also report constraints on H 0 r d from our model-agnostic analysis, independent of the pre-recombination physics.

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Идентификаторы

DOI: 10.1088/1475-7516/2024/10/048

Цитирования и источники

Цитирований: 4Использованных источников: 0

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