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Paper: MASIV:The Microarcsecond Scintillation-Induced Variability Survey
Volume: 365, SINS — Small Ionized and Neutral Structures in the Diffuse Interstellar Medium
Page: 279
Authors: Lovell, J.E.J.; Jauncey, D.L.; Senkbeil, C.; Shabala, S.; Bignall, H.E.; Pursimo, T.; Ojha, R.; Macquart, J.-P.; Rickett, B.J.; Dutka, M.; Kedziora-Chudczer, L.
Abstract: We are undertaking a large-scale 5 GHz VLA survey of the northern sky to search for rapid intra-day variability (IDV). Over four observing epochs we found that 56% of the sources showed variability on timescales of hours to several days. Fewer variables were detected at high galactic latitudes, supporting interstellar-scintillation as the principal mechanism responsible for IDV. We find evidence that many of the scattering screens are not moving with the local standard of rest. There are few scintillating sources observed at high redshift which may be an indication of scattering in the turbulent intergalactic medium.
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