77 citations · 178 across the 5 of their papers we have counts for
6 papers · 1 filter
New Multiwavelength Observations of PKS 2155-304 and Implications for the Coordinated Variability Patterns of Blazars
M. Angela Osterman, H. Richard Miller, Kevin Marshall +4
The TeV blazar PKS 2155--304 was the subject of an intensive 2 week optical and near-infrared observing campaign in 2004 August with the CTIO 0.9m telescope. During this time, simu…
Correlated X-ray and Optical Variability in Mkn 509
Kevin Marshall, Wesley T. Ryle, H. Richard Miller
We present results of a 3 year monitoring campaign of the Seyfert 1 galaxy Markarian 509, using X-ray data from the Rossi X-ray Timing Explorer (RXTE) and optical data taken by the…
The WEBT Campaign on the Blazar 3C279 in 2006
M. Boettcher
The quasar 3C279 was the target of an extensive multiwavelength monitoring campaign from January through April 2006, including an optical-IR-radio monitoring campaign by the Whole…
Multiwavelength Observations of the Extreme X-Ray Selected BL Lac Object PG 1553+11 (1ES 1553+113)
M. Angela Osterman, H. Richard Miller, Amy M. Campbell +9
PG 1553+11 was the target of a coordinated three week multiwavelength campaign during 2003 April and May. A significant X-ray flare was observed during the second half of this camp…
X-ray/Optical Variability of Akn 120 and 3C 120
K. Marshall, E. C. Ferrara, H. R. Miller +2
Using the Rossi X-ray Timing Experiment (RXTE), we have observed both the Seyfert 1 galaxy Akn 120 and the broad-line radio galaxy 3C 120. Monitoring observations spanning 2 years…
Mass and Angular Momentum Transfer in the Massive Algol Binary RY Persei
P. Barai, D. R. Gies, E. Choi +12
We present an investigation of H-alpha emission line variations observed in the massive Algol binary, RY Per. We give new radial velocity data for the secondary based upon our opti…