Dual-frequency Observations of 140 Compact, Flat-spectrum Active Galactic Nuclei for Scintillation-induced Variability

Koay, J. Y.; Macquart, J. P; Rickett, B. J.; Bignall, H. E.; Lovell, J; Reynolds, C; Jauncey, David; Pursimo, T; Kedziora-Chudczer, Lucyna L.; Ojha, R

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Dual-frequency Observations of 140 Compact, Flat-spectrum Active Galactic Nuclei for Scintillation-induced Variability

Date

2011

Authors

Koay, J. Y.

Macquart, J. P

Rickett, B. J.

Bignall, H. E.

Lovell, J

Reynolds, C

Jauncey, David

Pursimo, T

Kedziora-Chudczer, Lucyna L.

Ojha, R

Publisher

University of Chicago Press

Abstract

The 4.9 GHz Micro-Arcsecond Scintillation-Induced Variability (MASIV) Survey detected a drop in interstellar scintillation (ISS) for sources at redshifts z ≳ 2, indicating an apparent increase in angular diameter or a decrease in flux density of the mos