A Direct Upper Limit on the Density of Intergalactic Dust

Details A Direct Upper Limit on the Density of Intergalactic Dust A Direct Upper Limit on the Density of Intergalactic Dust

Dec 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002aas...201.9703p&link_type=abstract

American Astronomical Society, 201st AAS Meeting, #97.03; Bulletin of the American Astronomical Society, Vol. 34, p.1264

Astronomy and Astrophysics

Astronomy

10

Scientific paper

We present a preliminary upper limit on the density of smoothly distributed, large-grained intergalactic dust . The upper limit derives from the absence of a detectable X-ray scattering halo in a deep image of a bright, distant (z=4.3) quasar. The upper limit is well below dust densities that could have fundamentally affected the SN Ia Hubble Diagram.

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