Constraints on intergalactic dust from quasar colours

Abstract

Colour measurements of quasars are used to constrain the abundance and properties of intergalactic dust and the related extinction effects on high-z sources. For Type Ia supernovae at z = 1, we derive an upper limit on the possible dimming from intergalactic dust of dm=0.2, ruling out the ``grey'' dust scenario as being solely responsible for the observed faintness of high-z SNIa.

11 pages, 4 figures, reference added, minor changes, matches accepted JCAP version

References in corpus (2)

• SNOC: a Monte-Carlo simulation package for high-z supernova observations
• Constraint on intergalactic dust from thermal history of intergalactic medium

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