We present a measurement of the 1D Lyα forest flux power spectrum, using the complete Baryon Oscillation Spectroscopic Survey (BOSS) and first extended-BOSS (eBOSS) quasars at zqso>2.1, corresponding to the fourteenth data release (DR14) of the Sloan Digital Sky Survey (SDSS). Our results cover thirteen bins in redshift from zLyα=2.2 to 4.6, and scales up to k=0.02(km/s)−1. From a parent sample of 180,413 visually inspected spectra, we selected the 43,751 quasars with the best quality; this data set improves the previous result from the ninth data release (DR9), both in statistical precision (achieving a reduction by a factor of two) and in redshift coverage. We also present a thorough investigation of identified sources of systematic uncertainties that affect the measurement. The resulting 1D power spectrum of this work is in excellent agreement with the one from the BOSS DR9 data.
@article{arxiv.1812.03554,
title = {The one-dimensional power spectrum from the SDSS DR14 Ly$\alpha$ forests},
author = {Solène Chabanier and Nathalie Palanque-Delabrouille and Christophe Yèche and Jean-Marc Le Goff and Eric Armengaud and Julian Bautista and Michael Blomqvist and Nicolas Busca and Kyle Dawson and Thomas Etourneau and Andreu Font-Ribera and Youngbae Lee and Hélion du Mas des Bourboux and Matthew Pieri and James Rich and Graziano Rossi and Donald Schneider and Anže Slosar},
journal= {arXiv preprint arXiv:1812.03554},
year = {2019}
}