143 citations · 829 across the 24 of their papers we have counts for
4 papers · 1 filter
An Exceptional Radio Flare in Markarian 421
Joseph L. Richards, Talvikki Hovatta, Matthew L. Lister +9
In September 2012, the high-synchrotron-peaked (HSP) blazar Markarian 421 underwent a rapid wideband radio flare, reaching nearly twice the brightest level observed in the centimet…
Multifrequency studies of the narrow-line Seyfert 1 galaxy SBS 0846+513
F. D'Ammando, M. Orienti, J. Finke +10
The narrow-line Seyfert 1 galaxy SBS 0846+513 was first detected by the Large Area Telescope (LAT) on-board Fermi in 2011 June-July when it underwent a period of flaring activity.…
Zooming towards the Event Horizon - mm-VLBI today and tomorrow
T. P. Krichbaum, A. Roy, J. Wagner +21
Global VLBI imaging at millimeter and sub-millimeter wavelength overcomes the opacity barrier of synchrotron self-absorption in AGN and opens the direct view into sub-pc scale regi…
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…