464 citations · 7.7k across the 104 of their papers we have counts for
9 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…
Constraints on Blazar Jet Conditions During Gamma-Ray Flaring from Radiative Transfer Modeling
Margo F. Aller, Philip A. Hughes, Hugh D. Aller +1
As part of a program to investigate jet flow conditions during GeV gamma-ray flares detected by Fermi, we are using UMRAO multi-frequency, centimeter-band total flux density and li…
MOJAVE. X. Parsec-Scale Jet Orientation Variations and Superluminal Motion in AGN
M. L. Lister, M. F. Aller, H. D. Aller +7
We describe the parsec-scale kinematics of 200 AGN jets based on 15 GHz VLBA data obtained between 1994 Aug 31 and 2011 May 1. We present new VLBA 15 GHz images of these and 59 add…
VLBA observations of a rare multiple quasar imaging event caused by refraction in the interstellar medium
A. B. Pushkarev, Y. Y. Kovalev, M. L. Lister +9
We report on the first detection of the theoretically-predicted rare phenomenon of multiple parsec-scale imaging of an active galactic nucleus induced by refractive effects due to…
An X-Ray View of the Jet-Cycle in the Radio Loud AGN 3C120
Anne M. Lohfink, Christopher S. Reynolds, Svetlana G. Jorstad +10
We present a study of the central engine in the broad-line radio galaxy 3C120 using a multi-epoch analysis of a deep XMM-Newton observation and two deep Suzaku pointings (in 2012).…
IDV Observations & Study of the Quasar 0917+624
Xiang Liu, Quanwei Li, Thomas P. Krichbaum +2
We carried out intra-day variability (IDV) observations from August 2005 to January 2010 with the Urumqi 25m radio telescope for a dozen IDV sources including the quasar 0917+624.…