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An emulator for the Lyman- forest in beyond-CDM cosmologies
Christian Pedersen, Andreu Font-Ribera, Keir K. Rogers +4
Interpreting observations of the Lyman- forest flux power spectrum requires interpolation between a small number of expensive simulations. We present a Gaussian process emulator…
Optimal 1D Ly- Forest Power Spectrum Estimation I: DESI-Lite Spectra
Naim Göksel Karaçaylı, Andreu Font-Ribera, Nikhil Padmanabhan
The 1D Ly- forest flux power spectrum is sensitive to scales smaller than a typical galaxy survey, and hence ties to the intergalactic medium's thermal state,…
Optimal strategies for identifying quasars in DESI
James Farr, Andreu Font-Ribera, Andrew Pontzen
As spectroscopic surveys continue to grow in size, the problem of classifying spectra targeted as quasars (QSOs) will need to move beyond its historical reliance on human experts.…
The Completed SDSS-IV extended Baryon Oscillation Spectroscopic Survey: Baryon acoustic oscillations with Lyman- forests
Hélion du Mas des Bourboux, James Rich, Andreu Font-Ribera +36
We present a measurement of baryonic acoustic oscillations (BAO) from Lyman- (Ly) absorption and quasars at an effective redshift using the complete extended Baryoni…
The Completed SDSS-IV extended Baryon Oscillation Spectroscopic Survey: Cosmological Implications from two Decades of Spectroscopic Surveys at the Apache Point observatory
eBOSS Collaboration, Shadab Alam, Marie Aubert +97
We present the cosmological implications from final measurements of clustering using galaxies, quasars, and Ly forests from the completed Sloan Digital Sky Survey (SDSS) lineage…
Bayesian methods for fitting Baryon Acoustic Oscillations in the Lyman- forest
Andrei Cuceu, Andreu Font-Ribera, Benjamin Joachimi
We study and compare fitting methods for the Lyman- (Ly) forest 3D correlation function. We use the nested sampler PolyChord and the community code picca to perform a Bayesia…