The one-dimensional power spectrum from the SDSS DR14 Ly$alpha$ forests. (arXiv:1812.03554v1 [astro-ph.CO])
<a href="http://arxiv.org/find/astro-ph/1/au:+Chabanier_S/0/1/0/all/0/1">Solène Chabanier</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Palanque_Delabrouille_N/0/1/0/all/0/1">Nathalie Palanque-Delabrouille</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Yeche_C/0/1/0/all/0/1">Christophe Yèche</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Goff_J/0/1/0/all/0/1">Jean-Marc Le Goff</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Armengaud_E/0/1/0/all/0/1">Eric Armengaud</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Bautista_J/0/1/0/all/0/1">Julian Bautista</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Blomqvist_M/0/1/0/all/0/1">Michael Blomqvist</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Busca_N/0/1/0/all/0/1">Nicolas Busca</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Dawson_K/0/1/0/all/0/1">Kyle Dawson</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Etourneau_T/0/1/0/all/0/1">Thomas Etourneau</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Font_Ribera_A/0/1/0/all/0/1">Andreu Font-Ribera</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Lee_Y/0/1/0/all/0/1">Youngbae Lee</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Bourboux_H/0/1/0/all/0/1">Hélion du Mas des Bourboux</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Pieri_M/0/1/0/all/0/1">Matthew Pieri</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Rich_J/0/1/0/all/0/1">James Rich</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Rossi_G/0/1/0/all/0/1">Graziano Rossi</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Schneider_D/0/1/0/all/0/1">Donald Schneider</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Slosar_A/0/1/0/all/0/1">Anže Slosar</a>
We present a measurement of the 1D Ly$alpha$ forest flux power spectrum,
using the complete Baryon Oscillation Spectroscopic Survey (BOSS) and first
extended-BOSS (eBOSS) quasars at $z_{rm qso}>2.1$, corresponding to the
fourteenth data release (DR14) of the Sloan Digital Sky Survey (SDSS). Our
results cover thirteen bins in redshift from $z_{rm Lyalpha}=2.2$ to 4.6, and
scales up to $k=0.02rm ,(km/s)^{-1}$. 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
1D power spectrum of this work is in excellent agreement with the one from BOSS
DR9. Using a likelihood analysis with massless neutrinos, we obtain
$sigma_8=0.820pm 0.021$ and $n_s=0.955pm 0.005$ from BOSS+eBOSS Ly$alpha$
data.
We present a measurement of the 1D Ly$alpha$ forest flux power spectrum,
using the complete Baryon Oscillation Spectroscopic Survey (BOSS) and first
extended-BOSS (eBOSS) quasars at $z_{rm qso}>2.1$, corresponding to the
fourteenth data release (DR14) of the Sloan Digital Sky Survey (SDSS). Our
results cover thirteen bins in redshift from $z_{rm Lyalpha}=2.2$ to 4.6, and
scales up to $k=0.02rm ,(km/s)^{-1}$. 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
1D power spectrum of this work is in excellent agreement with the one from BOSS
DR9. Using a likelihood analysis with massless neutrinos, we obtain
$sigma_8=0.820pm 0.021$ and $n_s=0.955pm 0.005$ from BOSS+eBOSS Ly$alpha$
data.
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