3D correlations in the Lyman-α forest from early DESI data
C. GordonInstitut de Física d'Altes Energies(IFAE), The Barcelona Institute of Science and Technology, 08193 Bellaterra (Barcelona), SpainAndrei CuceuCenter for Cosmology and Astro-Particle Physics, The Ohio State University, Columbus, Ohio 43210, U.S.AJ. Chaves-MonteroInstitut de Física d'Altes Energies(IFAE), The Barcelona Institute of Science and Technology, 08193 Bellaterra (Barcelona), SpainAndreu Font-RiberaDepartment of Physics and Astronomy, University College London, Gower Street, London WC1E 6BT, U.KAlma X. González‐MoralesConsejo Nacional de Ciencia y Tecnología, Av. Insurgentes Sur 1582. Colonia Crédito Constructor, Del. Benito Juárez C.P. 03940, México D.F., MexicoJ. AguilarLawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720, U.S.AS. AhlenPhysics Dept., Boston University, 590 Commonwealth Avenue, Boston, MA 02215, U.S.AE. ArmengaudIRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, FranceS. BaileyLawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720, U.S.AA. BaultDepartment of Physics and Astronomy, University of California, Irvine, 92697, U.S.AA. BrodzellerDepartment of Physics and Astronomy, The University of Utah, 115 South 1400 East, Salt Lake City, UT 84112, U.S.ADavid BrooksDepartment of Physics and Astronomy, University College London, Gower Street, London WC1E 6BT, U.KT. ClaybaughLawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720, U.S.AR. de la CruzDepartamento de Física, Universidad de Guanajuato — DCI, C.P. 37150, Leon, Guanajuato, MexicoKyle DawsonDepartment of Physics and Astronomy, The University of Utah, 115 South 1400 East, Salt Lake City, UT 84112, U.S.AP. DoelDepartment of Physics and Astronomy, University College London, Gower Street, London WC1E 6BT, U.KJ. E. Forero-RomeroDepartamento de Física, Universidad de los Andes, Cra. 1 No. 18A-10, Edificio Ip, CP 111711, Bogotá, ColombiaSatya Gontcho A GontchoLawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720, U.S.AJ. GuyLawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720, U.S.AH. K. Herrera-AlcantarDepartamento de Física, Universidad de Guanajuato — DCI, C.P. 37150, Leon, Guanajuato, MexicoVid IršičKavli Institute for Cosmology, University of Cambridge, Madingley Road, Cambridge CB3 0HA, U.KNaim Göksel KaraçaylıCenter for Cosmology and Astro-Particle Physics, The Ohio State University, Columbus, Ohio 43210, U.S.AD. KirkbyDepartment of Physics and Astronomy, University of California, Irvine, 92697, U.S.AMartin LandriauLawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720, U.S.AL. Le GuillouSorbonne Université, CNRS/IN2P3, Laboratoire de Physique Nucléaire et de Hautes Energies (LPNHE), FR-75005 Paris, FranceM. E. LeviLawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720, U.S.AAxel de la MacorraInstituto de Física, Universidad Nacional Autónoma de México, Cd. de México C.P. 04510, MéxicoMarc ManeraDepartament de Física, Serra Húnter, Universitat Autònoma de Barcelona, 08193 Bellaterra (Barcelona), SpainPaul MartiniCenter for Cosmology and Astro-Particle Physics, The Ohio State University, Columbus, Ohio 43210, U.S.AAaron MeisnerNSF's NOIRLab, 950 N. Cherry Ave., Tucson, AZ 85719, U.S.AR. MiquelInstitució Catalana de Recerca i Estudis Avançats, Passeig de Lluís Companys, 23, 08010 Barcelona, SpainPaulo Montero-CamachoDepartment of Astronomy, Tsinghua University, 30 Shuangqing Road, Haidian District, Beijing, China, 100190A. Muñoz-GutiérrezInstituto de Física, Universidad Nacional Autónoma de México, Cd. de México C.P. 04510, MéxicoL. NapolitanoDepartment of Physics & Astronomy, University of Wyoming, 1000 E. University, Dept. 3905, Laramie, WY 82071, U.S.AJundan NieNational Astronomical Observatories, Chinese Academy of Sciences, A20 Datun Rd., Chaoyang District, Beijing, 100012, P.R. ChinaGustavo NizDepartamento de Física, Universidad de Guanajuato — DCI, C.P. 37150, Leon, Guanajuato, MexicoN. 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, CanadaMatthew M. PieriAix Marseille Univ, CNRS, CNES, LAM, Marseille, FranceClaire PoppettLawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720, U.S.AFrancisco PradaInstituto de Astrofísica de Andalucía (CSIC), Glorieta de la Astronomía, s/n, E-18008 Granada, SpainIgnasi Pérez-RàfolsDepartament de Física Quàntica i Astrofísica, Universitat de Barcelona, Martí i Franquès 1, E08028 Barcelona, SpainC. Ramírez-PérezInstitut de Física d'Altes Energies(IFAE), The Barcelona Institute of Science and Technology, 08193 Bellaterra (Barcelona), SpainC. RavouxAix Marseille Univ, CNRS/IN2P3, CPPM, Marseille, FranceMehdi RezaieDepartment of Physics, Kansas State University, 116 Cardwell Hall, Manhattan, KS 66506, U.S.AA.J. RossCenter for Cosmology and Astro-Particle Physics, The Ohio State University, Columbus, Ohio 43210, U.S.AGraziano RossiDepartment of Physics and Astronomy, Sejong University, Seoul, 143-747, KoreaE. SánchezCIEMAT, Avenida Complutense 40, E-28040 Madrid, SpainDavid J. SchlegelLawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720, U.S.AM. SchubnellDepartment of Physics, University of Michigan, Ann Arbor, MI 48109, U.S.AHee‐Jong SeoDepartment of Physics & Astronomy, Ohio University, Athens, OH 45701, U.S.AFrancesco SinigagliaInstituto de Astrofísica de Canarias, C/ Vía Láctea, s/n, E-38205 La Laguna, Tenerife, SpainT. TanSorbonne Université, CNRS/IN2P3, Laboratoire de Physique Nucléaire et de Hautes Energies (LPNHE), FR-75005 Paris, FranceG. TarléUniversity of Michigan, Ann Arbor, MI 48109, U.S.AMichael WaltherUniversity Observatory, Faculty of Physics, Ludwig-Maximilians-Universität, Scheinerstr. 1, 81677 München, GermanyB. A. WeaverDepartament de Física, Serra Húnter, Universitat Autònoma de Barcelona, 08193 Bellaterra (Barcelona), SpainChristophe YècheIRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, FranceZhimin 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 measurements of Lyman- α (Ly α ) forest correlations using early data from the Dark Energy Spectroscopic Instrument (DESI). We measure the auto-correlation of Ly α absorption using 88 509 quasars at z > 2, and its cross-correlation with quasars using a further 147 899 tracer quasars at z ≳ 1.77. Then, we fit these correlations using a 13-parameter model based on linear perturbation theory and find that it provides a good description of the data across a broad range of scales. We detect the BAO peak with a signal-to-noise ratio of 3.8 σ , and show that our measurements of the auto- and cross-correlations are fully-consistent with previous measurements by the Extended Baryon Oscillation Spectroscopic Survey (eBOSS). Even though we only use here a small fraction of the final DESI dataset, our uncertainties are only a factor of 1.7 larger than those from the final eBOSS measurement. We validate the existing analysis methods of Ly α correlations in preparation for making a robust measurement of the BAO scale with the first year of DESI data.
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