Chabanier, S;
Palanque-Delabrouille, N;
Yeche, C;
Le Goff, J-M;
Armengaud, E;
Bautista, J;
Blomqvist, M;
... Slosar, A; + view all
(2019)
The one-dimensional power spectrum from the SDSS DR14 Ly alpha forests.
Journal of Cosmology and Astroparticle Physics
, 2019
(7)
, Article 17. 10.1088/1475-7516/2019/07/017.
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Abstract
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.
| Type: | Article |
|---|---|
| Title: | The one-dimensional power spectrum from the SDSS DR14 Ly alpha forests |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1088/1475-7516/2019/07/017 |
| Publisher version: | https://doi.org/10.1088/1475-7516/2019/07/017 |
| Language: | English |
| Additional information: | This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions. |
| Keywords: | Lyman alpha forest, power spectrum, redshift surveys |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy |
| URI: | https://discovery-pp.ucl.ac.uk/id/eprint/10079670 |
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