Constraints on intergalactic dust from quasar colours

Aug, 2003
11 pages
Published in:
  • JCAP 09 (2003) 009
e-Print:

Citations per year

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Abstract: (arXiv)
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.