Pursimo, T; Ojha, R; Jauncey, David; Lovell, James E J; Dutka, Michael S; Bignall, H. E.; Macquart, J. P; Rickett, B. J.; Kedziora-Chudczer, Lucyna L.; Koay, J.Y.
Interstellar scintillation (ISS) has been shown to be primarily responsible for the short term intraday variability (IDV) exhibited by extragalactic sources at centimeter wavelengths (e.g. Bignall et al. 2006 and references therein). For a source to scintillate its angular size must be comparable to that of the first Fresnel zone (Narayan 1992) which implies microarcsecond angular sizes for screen distances of tens to hundreds of parsecs. This has the potential to probe within a few light...[Show more]
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