84 citations · 428 across the 14 of their papers we have counts for
6 papers · 1 filter
F-GAMMA: Variability Doppler factors of blazars from multiwavelength monitoring
I. Liodakis, N. Marchili, E. Angelakis +8
Recent population studies have shown that the variability Doppler factors can adequately describe blazars as a population. We use the flux density variations found within the exten…
The F-GAMMA program: Multi-frequency study of Active Galactic Nuclei in the Fermi era. Program description and the first 2.5 years of monitoring
L. Fuhrmann, E. Angelakis, J. A. Zensus +15
To fully exploit the scientific potential of the Fermi mission, we initiated the F-GAMMA program. Between 2007 and 2015 it was the prime provider of complementary multi-frequency m…
Exploring the nature of broadband variability in the FSRQ 3C 273
C. Chidiac, B. Rani, T. P. Krichbaum +12
Detailed investigation of broadband flux variability in the blazar 3C 273 allows us to probe the location and size of emission regions and their physical conditions. We report the…
What can the 2008/10 broadband flare of PKS 1502+106 tell us? Nuclear opacity, magnetic fields, and the location of gamma rays
V. Karamanavis, L. Fuhrmann, E. Angelakis +7
Context. The origin of blazar variability, seen from radio up to gamma rays, is still a heavily debated matter and broadband flares offer a unique testbed towards a better understa…
Coeval Observations of a Complete Sample of Blazars with Effelsberg, IRAM 30m, and Planck
Jörg P. Rachen, Lars Fuhrmann, Thomas Krichbaum +7
We present the outline and first results of a project using the synergies of the long term blazar radiomillimetre monitoring program F-GAMMA, the continued scanning of the millimet…
Properties of the radio jet emission of four gamma-ray Narrow Line Seyfert 1 galaxies
E. Angelakis, L. Fuhrmann, I. Myserlis +8
The detection of gamma rays from a small number of Narrow Line Seyfert 1 galaxies by the LAT instrument onboard Fermi seriously challenged our understanding of AGN physics. Among t…