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astro-ph2004
Non-stationary variability in AGN: the case of 3C 390.3
M. Gliozzi, I. E. Papadakis, R. M. Sambruna +1
We use data from a two-year intensive RXTE monitoring campaign of the broad-line radio galaxy 3C 390.3 to investigate its stationarity. In order to exploit the potential informatio…
astro-ph2000
Optical and X-ray monitoring of the NLS1 galaxy Ark 564
I. E. Papadakis, W. Brinkmann, H. Negoro +3
The Narrow-line Seyfert galaxy Ark 564 was monitored between June 04, 2000 and June 24, 2000 from Skinakas Observatory. The B,V,R and I band light curves show night to night variat…
astro-ph1998
Mrk421: EUVE observations from 1994 to 1997
Ilaria Cagnoni, Antonella Fruscione, Iossif E. Papadakis
We present spectral and timing analysis of all the data collected by the Extreme Ultraviolet Explorer for the BL Lac object Mrk 421 from 1994 to 1997. During these years Mrk 421 ha…