Optimal 1D Ly α forest power spectrum estimation – III. DESI early data
Naim Göksel KaraçaylıCenter for Cosmology and AstroParticle Physics, The Ohio State University , 191 West Woodruff Avenue, Columbus, OH 43210 , USAPaul MartiniCenter for Cosmology and AstroParticle Physics, The Ohio State University , 191 West Woodruff Avenue, Columbus, OH 43210 , USAJulien GuyLawrence Berkeley National Laboratory , 1 Cyclotron Road, Berkeley, CA 94720 , USAC. RavouxIRFU, CEA, Université Paris-Saclay , F-91191 Gif-sur-Yvette , FranceMarie Lynn Abdul KarimIRFU, CEA, Université Paris-Saclay , F-91191 Gif-sur-Yvette , FranceE. ArmengaudUniversité Paris-SaclayMichael WaltherExcellence Cluster ORIGINS , Boltzmannstrasse 2, D-85748 Garching , GermanyJ. AguilarLawrence Berkeley National Laboratory , 1 Cyclotron Road, Berkeley, CA 94720 , USAS. AhlenPhysics Department, Boston University , 590 Commonwealth Avenue, Boston, MA 02215 , USAS. BaileyLawrence Berkeley National Laboratory , 1 Cyclotron Road, Berkeley, CA 94720 , USAJ BautistaAix-Marseille UniversitéS. F. BeltranDepartamento de Física, Universidad de Guanajuato - DCI , C.P. 37150 Leon, Guanajuato , MéxicoDavid BrooksDepartment of Physics & Astronomy, University College London , Gower Street, London WC1E 6BT , UKL. Cabayol-GarciaInstitut de Física d’Altes Energies (IFAE), The Barcelona Institute of Science and Technology , Campus UAB, Bellaterra, E-08193 Barcelona , SpainSolène ChabanierLawrence Berkeley National Laboratory , 1 Cyclotron Road, Berkeley, CA 94720 , USAE. ChaussidonIRFU, CEA, Université Paris-Saclay , F-91191 Gif-sur-Yvette , FranceJ. Chaves-MonteroInstitut de Física d’Altes Energies (IFAE), The Barcelona Institute of Science and Technology , Campus UAB, Bellaterra, E-08193 Barcelona , SpainKyle DawsonDepartment of Physics and Astronomy, The University of Utah , 115 South 1400 East, Salt Lake City, UT 84112 , USAR de la CruzDepartamento de Física, Universidad de Guanajuato - DCI , C.P. 37150 Leon, Guanajuato , MéxicoA de la MacorraInstituto de Física, Universidad Nacional Autónoma de México , Cd. de México, CP 04510 , MéxicoP. DoelDepartment of Physics & Astronomy, University College London , Gower Street, London WC1E 6BT , UKAndreu Font-RiberaInstitut de Física d’Altes Energies (IFAE), The Barcelona Institute of Science and Technology , Campus UAB, Bellaterra, E-08193 Barcelona , SpainJ. 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 , USAAlma X. González‐MoralesDepartamento de Física, Universidad de Guanajuato - DCI , C.P. 37150 Leon, Guanajuato , MéxicoC. GordonInstitut de Física d’Altes Energies (IFAE), The Barcelona Institute of Science and Technology , Campus UAB, Bellaterra, E-08193 Barcelona , SpainH. K. Herrera-AlcantarDepartamento de Física, Universidad de Guanajuato - DCI , C.P. 37150 Leon, Guanajuato , MéxicoK. HonscheidCenter for Cosmology and AstroParticle Physics, The Ohio State University , 191 West Woodruff Avenue, Columbus, OH 43210 , USAVid IršičKavli Institute for Cosmology, University of Cambridge , Madingley Road, Cambridge CB3 0HA , UKMustapha 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 , USATheodore KisnerLawrence Berkeley National Laboratory , 1 Cyclotron Road, Berkeley, CA 94720 , USAA KreminLawrence Berkeley National Laboratory , 1 Cyclotron Road, Berkeley, CA 94720 , USAMartin LandriauLawrence Berkeley National Laboratory , 1 Cyclotron Road, Berkeley, CA 94720 , USAL. Le GuillouSorbonne UniversitéM. E. LeviLawrence Berkeley National Laboratory , 1 Cyclotron Road, Berkeley, CA 94720 , USAZarija LukićLawrence Berkeley National Laboratory , 1 Cyclotron Road, Berkeley, CA 94720 , USAAaron MeisnerNSF’s NOIRLab , 950 N. Cherry Avenue, Tucson, AZ 85719 , USAR. MiquelInstitut de Física d’Altes Energies (IFAE), The Barcelona Institute of Science and Technology , Campus UAB, Bellaterra, E-08193 Barcelona , SpainJohn MoustakasDepartment of Physics and Astronomy, Siena College , 515 Loudon Road, Loudonville, NY 12211 , USAEva-Maria MuellerInstitute of Cosmology & Gravitation, University of Portsmouth, Dennis Sciama Building , Portsmouth PO1 3FX , UKA. Muñoz-GutiérrezInstituto de Física, Universidad Nacional Autónoma de México , Cd. de México, CP 04510 , MéxicoL. NapolitanoDepartment of Physics & Astronomy, University of Wyoming , 1000 E. University, Dept. 3905, Laramie, WY 82071 , USAJundan NieNational Astronomical ObservatoriesGustavo NizDepartamento de Física, Universidad de Guanajuato - DCI , C.P. 37150 Leon, Guanajuato , MéxicoN. Palanque‐DelabrouilleCEA Paris-SaclayWill J. PercivalPerimeter Institute for Theoretical Physics , 31 Caroline St. North, Waterloo, ON N2L 2Y5 , CanadaMatthew M. PieriAix Marseille Univ, CNRS, CNES , LAM, Marseille , FranceClaire PoppettSpace Sciences Laboratory, University of California , Berkeley, 7 Gauss Way, Berkeley, CA 94720 , USAFrancisco PradaInstituto de Astrofísica de Andalucía (CSIC) , Glorieta de la Astronomía, s/n, E-18008 Granada , SpainIgnasi Pérez-RàfolsInstitut de Física d’Altes Energies (IFAE), The Barcelona Institute of Science and Technology , Campus UAB, Bellaterra, E-08193 Barcelona , SpainC. Ramírez-PérezInstitut de Física d’Altes Energies (IFAE), The Barcelona Institute of Science and Technology , Campus UAB, Bellaterra, E-08193 Barcelona , SpainGraziano RossiDepartment of Physics and Astronomy, Sejong University , Seoul 143-747 , KoreaE. SánchezCentro de Investigaciones Energéticas, Medioambientales y TecnológicasHee‐Jong SeoDepartment of Physics & Astronomy, Ohio University , Athens, OH 45701 , USAFrancesco SinigagliaInstituto de Astrofísica de Canarias , C/ Vía Láctea, s/n, E-38205 La Laguna, Tenerife , SpainT. TanLaboratoire de Physique Nucléaire et de Hautes ÉnergiesG. TarléDepartment of Physics, University of Michigan , Ann Arbor, MI 48109 , USABo WangDepartment of Astronomy, Tsinghua University , 30 Shuangqing Road, Haidian District, Beijing 100190 , ChinaB. A. WeaverNSF NOIRLabChristophe YècheIRFU, CEA, Université Paris-Saclay , F-91191 Gif-sur-Yvette , FranceZhiming ZhouNational Astronomical Observatories, Chinese Academy of Sciences , A20 Datun Road, Chaoyang District, Beijing 100012 , P.R. China
2024en
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ABSTRACT The 1D power spectrum P1D of the Ly α forest provides important information about cosmological and astrophysical parameters, including constraints on warm dark matter models, the sum of the masses of the three neutrino species, and the thermal state of the intergalactic medium. We present the first measurement of P1D with the quadratic maximum likelihood estimator (QMLE) from the Dark Energy Spectroscopic Instrument (DESI) survey early data sample. This early sample of 54 600 quasars is already comparable in size to the largest previous studies, and we conduct a thorough investigation of numerous instrumental and analysis systematic errors to evaluate their impact on DESI data with QMLE. We demonstrate the excellent performance of the spectroscopic pipeline noise estimation and the impressive accuracy of the spectrograph resolution matrix with 2D image simulations of raw DESI images that we processed with the DESI spectroscopic pipeline. We also study metal line contamination and noise calibration systematics with quasar spectra on the red side of the Ly α emission line. In a companion paper, we present a similar analysis based on the Fast Fourier Transform estimate of the power spectrum. We conclude with a comparison of these two approaches and discuss the key sources of systematic error that we need to address with the upcoming DESI Year 1 analysis.
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