X-ray scattering by intergalactic dust

Details X-ray scattering by intergalactic dust X-ray scattering by intergalactic dust

Apr 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985ssrv...40..701e&link_type=abstract

Space Science Reviews, Volume 40, Issue 3-4, pp. 701-704

Physics

Scientific paper

The imaging capabilities of the Exosat and Einstein satellites at soft X-ray wavelengths have begun to show that suitable Galactic X-ray sources have extended (≡10 arcmin) haloes due to scattering of soft X-rays by interstellar dust. A simple argument suggests that similar haloes, due to scattering by intergalactic dust, should exist around distant (z ≡ 1) quasars and detailed analysis confirms this conclusion. A search for such haloes around suitable X-ray quasars could provide valuable, model-independent, constraints on the amount and origin of intergalactic dust.

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