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We explore the cosmological implications of anisotropic clustering measurements of the quasar sample from Data Release 14 of the Sloan Digital Sky Survey IV Extended Baryon Oscillation Spectroscopic Survey (eBOSS) in configuration space.…

The flux power spectra of the Lyman-alpha forest from a sample of 27 QSOs taken with the high resolution echelle spectrograph UVES on VLT are presented. We find a similar fluctuation amplitude at the peak of the ``3D'' flux power spectrum…

天体物理学 · 物理学 2008-11-26 T. -S. Kim , M. Viel , M. G. Haehnelt , R. F. Carswell , S. Cristiani

The Ly-$\alpha$ forest 1D flux power spectrum is a powerful probe of several cosmological parameters. Assuming a $\Lambda$CDM cosmology including massive neutrinos, we find that the latest SDSS DR14 BOSS and eBOSS Ly-$\alpha$ forest data is…

We present measurements of the Baryon Acoustic Oscillation (BAO) scale in redshift-space using the clustering of quasars. We consider a sample of 147,000 quasars from the extended Baryon Oscillation Spectroscopic Survey (eBOSS) distributed…

We measure and analyse the bispectrum of the final, Data Release 12, galaxy sample provided by the Baryon Oscillation Spectroscopic Survey, splitting by selection algorithm into LOWZ and CMASS galaxies. The LOWZ sample contains 361\,762…

The Sloan Digital Sky Survey IV extended Baryonic Oscillation Spectroscopic Survey (SDSS-IV/eBOSS) will observe 195,000 emission-line galaxies (ELGs) to measure the Baryonic Acoustic Oscillation standard ruler (BAO) at redshift 0.9. To test…

BigBOSS is a Stage IV ground-based dark energy experiment to study baryon acoustic oscillations (BAO) and the growth of structure with a wide-area galaxy and quasar redshift survey over 14,000 square degrees. It has been conditionally…

天体物理仪器与方法 · 物理学 2011-06-10 D. Schlegel , F. Abdalla , T. Abraham , C. Ahn , C. Allende Prieto , J. Annis , E. Aubourg , M. Azzaro , S. Bailey. C. Baltay , C. Baugh , C. Bebek , S. Becerril , M. Blanton , A. Bolton , B. Bromley , R. Cahn , P. -H. Carton , J. L. Cervantes-Cota , Y. Chu , M. Cortes , K. Dawson , A. Dey , M. Dickinson , H. T. Diehl , P. Doel , A. Ealet , J. Edelstein , D. Eppelle , S. Escoffier , A. Evrard , L. Faccioli , C. Frenk , M. Geha , D. Gerdes , P. Gondolo , A. Gonzalez-Arroyo , B. Grossan , T. Heckman , H. Heetderks , S. Ho , K. Honscheid , D. Huterer , O. Ilbert , I. Ivans , P. Jelinsky , Y. Jing , D. Joyce , R. Kennedy , S. Kent , D. Kieda , A. Kim , C. Kim , J. -P. Kneib , X. Kong , A. Kosowsky , K. Krishnan , O. Lahav , M. Lampton , S. LeBohec , V. Le Brun , M. Levi , C. Li , M. Liang , H. Lim , W. Lin , E. Linder , W. Lorenzon , A. de la Macorra , Ch. Magneville , R. Malina , C. Marinoni , V. Martinez , S. Majewski , T. Matheson , R. McCloskey , P. McDonald , T. McKay , J. McMahon , B. Menard , J. Miralda-Escude , M. Modjaz , A. Montero-Dorta , I. Morales , N. Mostek , J. Newman , R. Nichol , P. Nugent , K. Olsen , N. Padmanabhan , N. Palanque-Delabrouille , I. Park , J. Peacock , W. Percival , S. Perlmutter , C. Peroux , P. Petitjean , F. Prada , E. Prieto , J. Prochaska , K. Reil , C. Rockosi , N. Roe , E. Rollinde , A. Roodman , N. Ross , G. Rudnick , V. Ruhlmann-Kleider , J. Sanchez , D. Sawyer , C. Schimd , M. Schubnell , R. Scoccimaro , U. Seljak , H. Seo , E. Sheldon , M. Sholl , R. Shulte-Ladbeck , A. Slosar , D. S. Smith , G. Smoot , W. Springer , A. Stril , A. S. Szalay , C. Tao , G. Tarle , E. Taylor , A. Tilquin , J. Tinker , F. Valdes , J. Wang , T. Wang , B. A. Weaver , D. Weinberg , M. White , M. Wood-Vasey , J. Yang , X. Yang. Ch. Yeche , N. Zakamska , A. Zentner , C. Zhai , P. Zhang

The Sloan Digital Sky Survey III (SDSS-III) presents the first spectroscopic data from the Baryon Oscillation Spectroscopic Survey (BOSS). This ninth data release (DR9) of the SDSS project includes 535,995 new galaxy spectra (median…

天体物理仪器与方法 · 物理学 2015-06-05 III Collaboration , Christopher P. Ahn , Rachael Alexandroff , Carlos Allende Prieto , Scott F. Anderson , Timothy Anderton , Brett H. Andrews , Éric Aubourg Stephen Bailey , Rory Barnes , Julian Bautista , Timothy C. Beers , Alessandra Beifiori , Andreas A. Berlind , Vaishali Bhardwaj , Dmitry Bizyaev , Cullen H. Blake , Michael R. Blanton , Michael Blomqvist , John J. Bochanski , Adam S. Bolton , Arnaud Borde , Jo Bovy , W. N. Brandt , J. Brinkmann , Peter J. Brown , Joel R. Brownstein , Kevin Bundy , N. G. Busca , William Carithers , Aurelio R. Carnero , Michael A. Carr , Dana I. Casetti-Dinescu , Yanmei Chen , Cristina Chiappini , Johan Comparat , Natalia Connolly , Justin R. Crepp , Stefano Cristiani , Rupert A. C. Croft , Antonio J. Cuesta , Luiz N. da Costa , James R. A. Davenport , Kyle S. Dawson , Roland de Putter , Nathan De Lee , Timothée Delubac , Saurav Dhital , Anne Ealet , Garrett L. Ebelke , Edward M. Edmondson , Daniel J. Eisenstein , S. Escoffier , Massimiliano Esposito , Michael L. Evans , Xiaohui Fan , Bruno Femení a Castellá , Emma Fernández Alvar , Leticia D. Ferreira , N. Filiz Ak , Hayley Finley , Scott W. Fleming , Andreu Font-Ribera , Peter M. Frinchaboy , D. A. García-Hernández , A. E. García Pérez , Jian Ge , R. Génova-Santos , Bruce A. Gillespie , Léo Girardi , Jonay I. González Hernández , Eva K. Grebel , James E. Gunn , Daryl Haggard , Jean-Christophe Hamilton , David W. Harris , Suzanne L. Hawley , Frederick R. Hearty , Shirley Ho , David W. Hogg , Jon A. Holtzman , Klaus Honscheid , J. Huehnerhoff , Inese I. Ivans , Zeljko Ivezić , Heather R. Jacobson , Linhua Jiang , Jonas Johansson , Jennifer A. Johnson , Guinevere Kauffmann , David Kirkby , Jessica A. Kirkpatrick , Mark A. Klaene , Gillian R. Knapp , Jean-Paul Kneib , Jean-Marc Le Goff , Alexie Leauthaud , Khee-Gan Lee , Young Sun Lee , Daniel C. Long , Craig P. Loomis , Sara Lucatello , Britt Lundgren , Robert H. Lupton , Bo Ma , Zhibo Ma , Nicholas MacDonald , Suvrath Mahadevan , Marcio A. G. Maia , Steven R. Majewski , Martin Makler , Elena Malanushenko , Viktor Malanushenko , A. Manchado , Rachel Mandelbaum , Marc Manera , Claudia Maraston , Daniel Margala , Sarah L. Martell , Cameron K. McBride , Ian D. McGreer , Richard G. McMahon , Brice Ménard , Sz. Meszaros , Jordi Miralda-Escudé , Antonio D. Montero-Dorta , Francesco Montesano , Heather L. Morrison , Demitri Muna , Jeffrey A. Munn , Hitoshi Murayama , Adam D. Myers , A. F. Neto , Duy Cuong Nguyen , Robert C. Nichol , David L. Nidever , Pasquier Noterdaeme , Ricardo L. C. Ogando , Matthew D. Olmstead , Daniel J. Oravetz , Russell Owen , Nikhil Padmanabhan , Nathalie Palanque-Delabrouille , Kaike Pan , John K. Parejko , Prachi Parihar , Isabelle Pâris , Petchara Pattarakijwanich , Joshua Pepper , Will J. Percival , Ismael Pérez-Fournon , Ignasi Pérez-Ráfols , Patrick Petitjean , Janine Pforr , Matthew M. Pieri , Marc H. Pinsonneault , G. F. Porto de Mello , Francisco Prada , Adrian M. Price-Whelan , M. Jordan Raddick , Rafael Rebolo , James Rich , Gordon T. Richards , Annie C. Robin , Helio J. Rocha-Pinto , Constance M. Rockosi , Natalie A. Roe , Ashley J. Ross , Nicholas P. Ross , J. A. Rubiño-Martin , Lado Samushia , J. Sanchez Almeida , Ariel G. Sánchez , Basílio Santiago , Conor Sayres , David J. Schlegel , Katharine J. Schlesinger , Sarah J. Schmidt , Donald P. Schneider , Axel D. Schwope , C. G. Scóccola , Uros Seljak , Erin Sheldon , Yue Shen , Yiping Shu , Jennifer Simmerer , Audrey E. Simmons , Ramin A. Skibba , A. Slosar , Flavia Sobreira , Jennifer S. Sobeck , Keivan G. Stassun , Oliver Steele , Matthias Steinmetz , Michael A. Strauss , Molly E. C. Swanson , Tomer Tal , Aniruddha R. Thakar , Daniel Thomas , Benjamin A. Thompson , Jeremy L. Tinker , Rita Tojeiro , Christy A. Tremonti , M. Vargas Magaña , Licia Verde , Matteo Viel , Shailendra K. Vikas , Nicole P. Vogt , David A. Wake , Ji Wang , Benjamin A. Weaver , David H. Weinberg , Benjamin J. Weiner , Andrew A. West , Martin White , John C. Wilson , John P. Wisniewski , W. M. Wood-Vasey , Brian Yanny , Christophe Yèche , Donald G. York , O. Zamora , Gail Zasowski , Idit Zehavi , Gong-Bo Zhao , Zheng Zheng , Guangtun Zhu , Joel C. Zinn

We present constraints on the parameters of the $\Lambda$CDM cosmological model in the presence of massive neutrinos, using the one-dimensional Ly$\alpha$ forest power spectrum obtained with the Baryon Oscillation Spectroscopic Survey…

A sample of eight quasars observed at high resolution and signal-to-noise is used to determine the probability distribution function (PDF), the power spectrum, and the correlation function of the transmitted flux in the \lya forest, in…

We present the effective-field theory (EFT)-based cosmological full-shape analysis of the anisotropic power spectrum of eBOSS quasars at the effective redshift $z_{\rm eff}=1.48$. We perform extensive tests of our pipeline on simulations,…

宇宙学与河外天体物理 · 物理学 2023-02-22 Anton Chudaykin , Mikhail M. Ivanov

The Lyman-$\alpha$ (hereafter Ly-$\alpha$) forest is a probe of large-scale matter density fluctuations at high redshift, $z > 2.1$. It consists of HI absorption spectra along individual lines-of-sight. If the line-of-sight density is large…

We present composite spectra constructed from a sample of 242,150 Lyman-alpha (Lya) forest absorbers at redshifts 2.4<z<3.1 identified in quasar spectra from the Baryon Oscillation Spectroscopic Survey (BOSS) as part of Data Release 9 of…

We present the first application of the weighted skew-spectra to analyze non-Gaussian information in galaxy survey data. Using the tree-level galaxy skew-spectra together with the one-loop power spectrum multipoles, we analyze the Sloan…

宇宙学与河外天体物理 · 物理学 2024-01-25 Shu-Fan Chen , Priyesh Chakraborty , Cora Dvorkin

Current analyses of the Lyman-alpha forest assume that the primordial power spectrum of density perturbations obeys a simple power law, a strong theoretical assumption which should be tested. Employing a large suite of numerical simulations…

宇宙学与河外天体物理 · 物理学 2010-05-24 Simeon Bird

The SDSS-III BOSS Quasar survey will attempt to observe z>2.15 quasars at a density of at least 15 per square degree to yield the first measurement of the Baryon Acoustic Oscillations in the Ly-alpha forest. To help reaching this goal, we…

We analyse the anisotropic clustering of the Baryon Oscillation Spectroscopic Survey (BOSS) CMASS Data Release 11 (DR11) sample, which consists of $690\,827$ galaxies in the redshift range $0.43 < z < 0.7$ and has a sky coverage of…

We present cosmological results inferred from the effective-field theory (EFT) analysis of the full-shape of eBOSS quasars (QSO) power spectrum. We validate our analysis pipeline against simulations, and find overall good agreement between…

宇宙学与河外天体物理 · 物理学 2023-07-18 Théo Simon , Pierre Zhang , Vivian Poulin