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Detection of six rapidly scintillating active galactic nuclei and the diminished variability of J1819+3845

Koay, J. Y.; Bignall, H. E.; Macquart, J. P; Jauncey, David; Rickett, B. J.; Lovell, J


The extreme, intra-hour and >10% rms flux density scintillation observed in AGNs such as PKS 0405-385, J1819+3845 and PKS 1257-326 at cm wavelengths has been attributed to scattering in highly turbulent, nearby regions in the interstellar medium. Such behavior has been found to be rare. We searched for rapid scintillators among 128 flat spectrum AGNs and analyzed their properties to determine the origin of such rapid and large amplitude radio scintillation. The sources were observed at the VLA...[Show more]

CollectionsANU Research Publications
Date published: 2011
Type: Journal article
Source: Astronomy and Astrophysics
DOI: 10.1051/0004-6361/201117805
Access Rights: Open Access


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