First detection of the BAO signal from early DESI data
Jeongin MoonDepartment of Physics and Astronomy, Sejong University , Seoul 143-747 , KoreaD. ValcinDepartment of Physics and Astronomy, Ohio University , Athens, OH 45701 , USAM. RashkovetskyiCenter for Astrophysics | Harvard and Smithsonian , 60 Garden Street, Cambridge, MA 02138 , USAChristoph SaulderKorea Astronomy and Space Science Institute , 776 Daedeok-daero, Yuseong-gu, Daejeon 34055 , Republic of KoreaJ. AguilarLawrence Berkeley National Laboratory , 1 Cyclotron Road, Berkeley, CA 94720 , USAS. AhlenPhysics Department, Boston University , 590 Commonwealth Avenue, Boston, MA 02215 , USAShadab AlamTata Institute of Fundamental Research , Homi Bhabha Road, Mumbai 400005 , IndiaS. BaileyLawrence Berkeley National Laboratory , 1 Cyclotron Road, Berkeley, CA 94720 , USAC. BaltayPhysics Department, Yale University , PO Box 208120, New Haven, CT 06511 , USARobert BlumNSF’s NOIRLab , 950 N. Cherry Ave., Tucson, AZ 85719 , USADavid BrooksDepartment of Physics and Astronomy, University College London , Gower Street, London WC1E 6BT , UKE. BurtinIRFU, CEA, Université Paris-Saclay , F-91191 Gif-sur-Yvette , FranceE. ChaussidonIRFU, CEA, Université Paris-Saclay , F-91191 Gif-sur-Yvette , FranceKyle DawsonDepartment of Physics and Astronomy, The University of Utah , 115 South 1400 East, Salt Lake City, UT 84112 , USAAxel de la MacorraInstituto de Física, Universidad Nacional Autónoma de México , Cd. de México C.P. 04510 , MéxicoArnaud de M attiaIRFU, CEA, Université Paris-Saclay , F-91191 Gif-sur-Yvette , FranceG. DhunganaDepartment of Physics, Southern Methodist University , 3215 Daniel Avenue, Dallas, TX 75275 , USADaniel J. EisensteinCenter for Astrophysics | Harvard and Smithsonian , 60 Garden Street, Cambridge, MA 02138 , USAB. FlaugherFermi National Accelerator Laboratory , PO Box 500, Batavia, IL 60510 , USAAndreu Font-RiberaInstitut de Física d’Altes Energies (IFAE), The Barcelona Institute of Science and Technology , Campus UAB, E-08193 Bellaterra Barcelona , SpainJ. E. Forero-RomeroDepartamento de Física, Universidad de los Andes , Cra. 1 No. 18A-10, Edificio Ip, CP 111711, Bogotá , ColombiaC. García-QuinteroDepartment of Physics, The University of Texas at Dallas , Richardson, TX 75080 , USASatya Gontcho A GontchoLawrence Berkeley National Laboratory , 1 Cyclotron Road, Berkeley, CA 94720 , USAJulien GuyLawrence Berkeley National Laboratory , 1 Cyclotron Road, Berkeley, CA 94720 , USAM. HanifUniversity of Michigan , Ann Arbor, MI 48109 , USAKlaus HonscheidCenter for Cosmology and AstroParticle Physics, The Ohio State University , 191 West Woodruff Avenue, Columbus, OH 43210 , USAMustapha IshakDepartment of Physics, The University of Texas at Dallas , Richardson, TX 75080 , USAR. KehoeDepartment of Physics, Southern Methodist University , 3215 Daniel Avenue, Dallas, TX 75275 , USASumi KimNatural Science Research Institute, University of Seoul , 163 Seoulsiripdae-ro, Dongdaemun-gu, Seoul 02504 , South KoreaTheodore KisnerLawrence Berkeley National Laboratory , 1 Cyclotron Road, Berkeley, CA 94720 , USAAnthony KreminLawrence Berkeley National Laboratory , 1 Cyclotron Road, Berkeley, CA 94720 , USAMartin LandriauLawrence Berkeley National Laboratory , 1 Cyclotron Road, Berkeley, CA 94720 , USAL. Le GuillouLaboratoire de Physique Nucléaire et de Hautes Energies (LPNHE), CNRS/IN2P3, Sorbonne Université , F-75005 Paris , FranceMichael LeviLawrence Berkeley National Laboratory , 1 Cyclotron Road, Berkeley, CA 94720 , USAMarc ManeraDepartament de Física, Serra Húnter, Universitat Autònoma de Barcelona , E-08193 Bellaterra (Barcelona) , SpainPaul MartiniCenter for Cosmology and AstroParticle Physics, The Ohio State University , 191 West Woodruff Avenue, Columbus, OH 43210 , USAPatrick McDonaldLawrence Berkeley National Laboratory , 1 Cyclotron Road, Berkeley, CA 94720 , USAAaron MeisnerNSF’s NOIRLab , 950 N. Cherry Ave., Tucson, AZ 85719 , USARamon MiquelInstitució Catalana de Recerca i Estudis Avançats, Passeig de Lluís Companys , 23, E-08010 Barcelona , SpainJohn MoustakasDepartment of Physics and Astronomy , Siena College, 515 Loudon Road, Loudonville, NY 12211 , USAAdam MyersDepartment of Physics and Astronomy, University of Wyoming , 1000 E. University, Dept. 3905, Laramie, WY 82071 , USAS. NadathurInstitute of Cosmology and Gravitation, University of Portsmouth , Dennis Sciama Building, Portsmouth PO1 3FX , UKRichard NeveuxUniversity of EdinburghJeffrey A. NewmanDepartment of Physics and Astronomy and Pittsburgh Particle Physics, Astrophysics, and Cosmology Center (PITT PACC), University of Pittsburgh , 3941 O’Hara Street, Pittsburgh, PA 15260 , USAJundan NieNational Astronomical Observatories, Chinese Academy of Sciences , A20 Datun Rd, Chaoyang District, Beijing 100012 , P.R. ChinaNikhil PadmanabhanPhysics Department, Yale University , PO Box 208120, New Haven, CT 06511 , USAN. Palanque‐DelabrouilleIRFU, CEA, Université Paris-Saclay , F-91191 Gif-sur-Yvette , FranceWill J. PercivalPerimeter Institute for Theoretical Physics , 31 Caroline St. North, Waterloo, ON N2L 2Y5 , CanadaAlejandro Pérez FernándezInstituto de Física, Universidad Nacional Autónoma de México , Cd. de México C.P. 04510 , MéxicoClaire PoppettLawrence Berkeley National Laboratory , 1 Cyclotron Road, Berkeley, CA 94720 , USAFrancisco PradaInstituto de Astrofísica de Andalucía (CSIC) , Glorieta de la Astronomía, s/n, E-18008 Granada , SpainAnand RaichoorLawrence Berkeley National Laboratory , 1 Cyclotron Road, Berkeley, CA 94720 , USAAshley J RossCenter for Cosmology and AstroParticle Physics, The Ohio State University , 191 West Woodruff Avenue, Columbus, OH 43210 , USAGraziano RossiDepartment of Physics and Astronomy, Sejong University , Seoul 143-747 , KoreaLado SamushiaDepartment of Physics, Kansas State University , 116 Cardwell Hall, Manhattan, KS 66506 , USADavid J. SchlegelLawrence Berkeley National Laboratory , 1 Cyclotron Road, Berkeley, CA 94720 , USAHee‐Jong SeoDepartment of Physics and Astronomy, Ohio University , Athens, OH 45701 , USAG. TarléUniversity of Michigan , Ann Arbor, MI 48109 , USAM. Vargas-MagañaInstituto de Física, Universidad Nacional Autónoma de México , Cd. de México C.P. 04510 , MéxicoAndrei VariuEcole Polytechnique Fédérale de Lausanne , CH-1015 Lausanne , SwitzerlandBenjamin Alan WeaverNSF’s NOIRLab , 950 N. Cherry Ave., Tucson, AZ 85719 , USAMartin WhiteDepartment of Physics, University of California , Berkeley, 366 LeConte Hall MC 7300, Berkeley, CA 94720-7300 , USAChristophe YècheCEA Paris-SaclaySihan YuanSLAC National Accelerator Laboratory , Menlo Park, CA 94305 , USACheng ZhaoEcole Polytechnique Fédérale de Lausanne , CH-1015 Lausanne , SwitzerlandRongpu ZhouLawrence Berkeley National Laboratory , 1 Cyclotron Road, Berkeley, CA 94720 , USAZhimin ZhouNational Astronomical Observatories, Chinese Academy of Sciences , A20 Datun Rd, Chaoyang District, Beijing 100012 , P.R. ChinaH. ZouNational Astronomical Observatories, Chinese Academy of Sciences , A20 Datun Rd, Chaoyang District, Beijing 100012 , P.R. China
2023en
ABI
Аннотация
ABSTRACT We present the first detection of the baryon acoustic oscillations (BAOs) signal obtained using unblinded data collected during the initial 2 months of operations of the Stage-IV ground-based Dark Energy Spectroscopic Instrument (DESI). From a selected sample of 261 291 luminous red galaxies spanning the redshift interval 0.4 < z < 1.1 and covering 1651 square degrees with a 57.9 per cent completeness level, we report a ∼5σ level BAO detection and the measurement of the BAO location at a precision of 1.7 per cent. Using a bright galaxy sample of 109 523 galaxies in the redshift range 0.1 < z < 0.5, over 3677 square degrees with a 50.0 per cent completeness, we also detect the BAO feature at ∼3σ significance with a 2.6 per cent precision. These first BAO measurements represent an important milestone, acting as a quality control on the optimal performance of the complex robotically actuated, fibre-fed DESI spectrograph, as well as an early validation of the DESI spectroscopic pipeline and data management system. Based on these first promising results, we forecast that DESI is on target to achieve a high-significance BAO detection at sub-per cent precision with the completed 5-yr survey data, meeting the top-level science requirements on BAO measurements. This exquisite level of precision will set new standards in cosmology and confirm DESI as the most competitive BAO experiment for the remainder of this decade.
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