Radio variability of 1st 3-months Fermi blazars at 5 GHz: affected by interstellar scintillation?

((1) Urumqi Observatory; 2); (2) Graduate University of CAS; (3) MPIfR); J. Liu (1); NAOCAS; N. Marchili (3); T.P. Krichbaum (3); X. Liu (1); Z. Ding (1

arxiv: 1101.4482 · v1 · pith:ZZH2EV2Cnew · submitted 2011-01-24 · 🌌 astro-ph.CO

Radio variability of 1st 3-months Fermi blazars at 5 GHz: affected by interstellar scintillation?

X. Liu (1) , Z. Ding (1 , 2) , J. Liu (1) , N. Marchili (3) , T.P. Krichbaum (3) , ((1) Urumqi Observatory , NAOCAS

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(2) Graduate University of CAS (3) MPIfR)

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keywords blazarsvariabilityaffectedappearsdetectedfermiinterstellarmode

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Blazars from the first-three-months Fermi-AGN list were observed with the Urumqi 25m radio telescope at 5GHz in IDV (Intra-Day Variability) mode and inter-month observation mode. A significant correlation between the flux density at 5GHz and the gamma-ray intensity for the Fermi-LAT detected blazars is seen. There is a higher IDV detection rate in Fermi detected blazars than those reported for other samples. Stronger variability appears at lower Galactic latitudes; IDV appears to be stronger in weaker sources, indicating that the variability is affected by interstellar scintillation.

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Radio variability of 1st 3-months Fermi blazars at 5 GHz: affected by interstellar scintillation?

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