Connection between gamma-ray and radio activity of blazars from Fermi-LAT and 15 GHz radio monitoring with the OVRO 40-Meter Telescope

2009/12/18 by Max-Moerbeck, Walter
#Cosmology and Nongalactic Astrophysics (astro-ph.CO) #FOS: Physical sciences #High Energy Astrophysical Phenomena (astro-ph.HE)

paper · doi:10.48550/arxiv.0912.3817

Abstract

A large sample of blazar from the Candidate Gamma Ray Blazar Survey (CGRaBS) has been observed with the Owens Valley Radio Observatory (OVRO) 40-Meter Telescope at 15GHz. Using these quasi-simultaneous observations, we study the connection between the gamma-ray behavior of blazars as detected by Fermi-LAT and the cm band as observed by the F-GAMMA project with the OVRO 40-Meter Telescope. Comparing the light curves for a large number of sources, it is possible to study in detail the relation between the gamma-ray and radio activity of Fermi-LAT detected gamma-ray blazars. We present first results for correlations between Fermi-LAT and our 15 ~GHz observations.

Related

• OVRO 40m blazar monitoring program: Understanding the relationship between 15 GHz radio variability properties and gamma-ray activity in blazars
• OVRO 40 m Blazar Monitoring Program: Location of the gamma-ray emission region in blazars by the study of correlated variability at radio and gamma-rays
• Correlation between γ-ray and radio emissions in Fermi blazars
• Radio Variability Studies of Gamma-Ray Blazars with the OVRO 40 m Telescope
• Gamma-ray band and multi-waveband variability of blazars with the Fermi Large Area Space Telescope