Constraints on intergalactic dust from quasar colours

Details Constraints on intergalactic dust from quasar colours Constraints on intergalactic dust from quasar colours

2003-08-04

arxiv.org/abs/astro-ph/0308046v2

JCAP 0309:009,2003

Astronomy and Astrophysics

Astrophysics

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

Scientific paper

10.1088/1475-7516/2003/09/009

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.

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