Blind QSO reconstruction challenge: exploring methods to reconstruct the Ly α emission line of QSOs
Document Type
Article
Publication Date
9-1-2024
Abstract
Reconstructing the intrinsic Ly alpha line flux from high-z QSOs can place constraints on the neutral hydrogen content of the intergalactic medium during reionization. There are now greater than or similar to 10 different Ly alpha reconstruction pipelines using different methodologies to predict the Ly alpha line flux from correlations with the spectral information redwards of Ly alpha. However, there have been few attempts to directly compare the performance of these pipelines. Therefore, we devised a blind QSO challenge to compare these reconstruction pipelines on a uniform set of objects. Each author was provided de-identified, observed rest-frame QSO spectra with spectral information only redwards of 1260 & Aring; rest-frame to ensure unbiased reconstruction. We constructed two samples of 30 QSOs, from X-Shooter and Sloan Digital Sky Survey (SDSS) both spanning 3.5
Keywords
quasars: emission lines, quasars: general, cosmology: observations, cosmology: theory
Divisions
PHYSICS
Publication Title
Monthly Notices of the Royal Astronomical Society
Volume
533
Issue
3
Publisher
Oxford University Press
Publisher Location
GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND