@inproceedings{41b047153e7744ac82d34974ce6efbdb,
title = "The UV-TO-X-ray emission ratio in AGN: Luminosity dependence and no redshift evolution",
abstract = "We compiled a relatively homogeneous sample of 332 optically-selected, radio-quiet, unabsorbed AGN with the largest redshift range coverage (0 < z < 6) and X-ray detection fraction to date (88%). Using partial-correlation analysis, we confirm that the soft X-ray emission from AGN is strongly correlated with their UV emission (partial Kendall's τ = 0.52 at 15.4σ) despite the dependence of luminosity on redshift in flux-limited samples. The UV-to-X-ray emission ratio, αox = -0.384log[L 2500{\AA}/L2keV], is related to the AGN luminosity (in the sense that less luminous AGN emit more soft X-rays per unit UV), but remains unchanged with cosmic time.",
author = "I. Strateva and A. Steffen and W. Brandt and D. Alexander and A. Koekemoer and B. Lehmer and D. Schneider and C. Vignali",
year = "2006",
language = "English (US)",
isbn = "9290929154",
series = "European Space Agency, (Special Publication) ESA SP",
number = "604",
pages = "675--676",
booktitle = "X-ray Universe 2005",
edition = "604",
note = "X-ray Universe 2005 ; Conference date: 26-09-2005 Through 30-09-2005",
}