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A tomographic map of the large-scale matter distribution using the eBOSS Stripe 82 Ly- forest
C. Ravoux, E. Armengaud, M. Walther +16
The Lyman- (hereafter Ly-) forest is a probe of large-scale matter density fluctuations at high redshift, . It consists of HI absorption spectra along individual lin…
LyaCoLoRe: Synthetic Datasets for Current and Future Lyman- Forest BAO Surveys
James Farr, Andreu Font-Ribera, Hélion du Mas des Bourboux +18
The statistical power of Lyman- forest Baryon Acoustic Oscillation (BAO) measurements is set to increase significantly in the coming years as new instruments such as the Dark En…
Baryon acoustic oscillations from the cross-correlation of Ly absorption and quasars in eBOSS DR14
Michael Blomqvist, Hélion du Mas des Bourboux, Nicolás G. Busca +15
We present a measurement of the baryon acoustic oscillation (BAO) scale at redshift from the three-dimensional correlation of Lyman- (Ly) forest absorption and quasa…
Baryon acoustic oscillations at z = 2.34 from the correlations of Ly absorption in eBOSS DR14
Victoria de Sainte Agathe, Christophe Balland, Hélion du Mas des Bourboux +16
We measure the imprint of primordial baryon acoustic oscillations (BAO) in the correlation function of Ly absorption in quasar spectra from the Baryon Oscillation Spectroscopic…
The one-dimensional power spectrum from the SDSS DR14 Ly forests
Solène Chabanier, Nathalie Palanque-Delabrouille, Christophe Yèche +15
We present a measurement of the 1D Ly forest flux power spectrum, using the complete Baryon Oscillation Spectroscopic Survey (BOSS) and first extended-BOSS (eBOSS) quasars at $z…
The clustering of the SDSS-IV extended Baryon Oscillation Spectroscopic Survey DR14 quasar sample: measurement of the growth rate of structure from the anisotropic correlation function between redshift 0.8 and 2.2
Pauline Zarrouk, Etienne Burtin, Hector Gil-Marin +35
We present the clustering measurements of quasars in configuration space based on the Data Release 14 (DR14) of the Sloan Digital Sky Survey IV extended Baryon Oscillation Spectros…
Baryon acoustic oscillations from the complete SDSS-III Ly-quasar cross-correlation function at
Hélion du Mas des Bourboux, Jean-Marc Le Goff, Michael Blomqvist +22
We present a measurement of baryon acoustic oscillations (BAO) in the cross-correlation of quasars with the Ly-forest flux-transmission at a mean redshift . The measurem…
Clustering of quasars in SDSS-IV eBOSS : study of potential systematics and bias determination
Pierre Laurent, Sarah Eftekharzadeh, Jean-Marc Le Goff +21
We study the first year of the eBOSS quasar sample in the redshift range which includes 68,772 homogeneously selected quasars. We show that the main source of systemati…
The clustering of the SDSS-IV extended Baryon Oscillation Spectroscopic Survey DR14 quasar sample: First measurement of Baryon Acoustic Oscillations between redshift 0.8 and 2.2
Metin Ata, Falk Baumgarten, Julian Bautista +60
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…
Measurement of BAO correlations at with SDSS DR12 \lya-Forests
Julian E. Bautista, Nicolás G. Busca, Julien Guy +24
We use flux-transmission correlations in \Lya forests to measure the imprint of baryon acoustic oscillations (BAO). The study uses spectra of 157,783 quasars in the redshift range…
Exploring cosmic homogeneity with the BOSS DR12 galaxy sample
Pierros Ntelis, Jean-Christophe Hamilton, Jean-Marc Le Goff +16
In this study, we probe the transition to cosmic homogeneity in the Large Scale Structure (LSS) of the Universe using the CMASS galaxy sample of BOSS spectroscopic survey which cov…
A 14 Gpc study of cosmic homogeneity using BOSS DR12 quasar sample
Pierre Laurent, Jean-Marc Le Goff, Etienne Burtin +16
The BOSS quasar sample is used to study cosmic homogeneity with a 3D survey in the redshift range . We measure the count-in-sphere, , i.e. the average number o…
The SDSS-IV extended Baryon Oscillation Spectroscopic Survey: Overview and Early Data
Kyle S. Dawson, Jean-Paul Kneib, Will J. Percival +143
The Extended Baryon Oscillation Spectroscopic Survey (eBOSS) will conduct novel cosmological observations using the BOSS spectrograph at Apache Point Observatory. Observations will…
Baryon Acoustic Oscillations in the Ly-α forest of BOSS quasars
Nicolás G. Busca, Timothée Delubac, James Rich +59
We report a detection of the baryon acoustic oscillation (BAO) feature in the three-dimensional correlation function of the transmitted flux fraction in the \Lya forest of high-red…
QSO Selection and Photometric Redshifts with Neural Networks
Ch. Yeche, P. Petitjean, J. Rich +9
Baryonic Acoustic Oscillations (BAO) and their effects on the matter power spectrum can be studied by using the Lyman-alpha absorption signature of the matter density field along q…