J. Papamastorakis
University of Crete
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Publication
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Astronomy and Astrophysics | 2002
M. Villata; C. M. Raiteri; Maria G. Nikolashvili; I. E. Papadakis; K. Tsinganos; Kozo Sadakane; S. Ciprini; A. Frasca; E. Marilli; R. Nesci; M. Maesano; Julian N. Basler; C. Pullen; J. A. de Diego; Marko Moilanen; Arto Oksanen; Dolores Rodriguez; M. A. Kelly; H. R. Miller; Santo Catalano; D. Dultzin-Hacyan; Hannu Karttunen; N. A. Kudryavtseva; Katsura Matsumoto; F. Montagni; G. Nucciarelli; Luisa Ostorero; J. Papamastorakis; M. Pasanen; G. Sobrito
We present UBVRI light curves of BL Lacertae from May 2000 to January 2001, obtained by 24 telescopes in 11 countries. More than 15 000 observations were performed in that period, which was the extension of the Whole Earth Blazar Telescope (WEBT) campaign originally planned for July–August 2000. The exceptional sampling reached allows one to follow the flux behaviour in fine detail. Two different phases can be distinguished in the light curves: a first, relatively low-brightness phase is followed by an outburst phase, after a more than
Astronomy and Astrophysics | 2006
A. Misiriotis; E. M. Xilouris; J. Papamastorakis; P. Boumis; C. Goudis
1\rm\,mag
Astronomy and Astrophysics | 2003
I. E. Papadakis; P. Boumis; V. Samaritakis; J. Papamastorakis
brightening in a few weeks. Both the time duration (about
Monthly Notices of the Royal Astronomical Society | 2003
P. Boumis; E. Paleologou; F. Mavromatakis; J. Papamastorakis
100\rm\,d
Astronomy and Astrophysics | 2002
F. Mavromatakis; P. Boumis; J. Papamastorakis; J. Ventura
) and the variation amplitude (roughly
Astronomy and Astrophysics | 2001
F. Mavromatakis; J. Papamastorakis; J. Ventura; W. Becker; E. V. Paleologou; D. Schaudel
0.9\rm\,mag
Astronomy and Astrophysics | 2004
F. Mavromatakis; B. Aschenbach; P. Boumis; J. Papamastorakis
) are similar in the two phases. Rapid flux oscillations are present all the time, involving variations up to a few tenths of mag on hour time scales, and witnessing an intense intraday activity of this source. In particular, a half-mag brightness decrease in about
Astronomy and Astrophysics | 2004
I. E. Papadakis; V. Samaritakis; P. Boumis; J. Papamastorakis
7\rm\,h
Astrophysics and Space Science | 2001
N. D. Kylafis; A. Misiriotis; J. Papamastorakis; E. M. Xilouris
was detected on August 8–9, 2000, immediately followed by a ~
arXiv: Astrophysics | 2006
P. Boumis; S. Akras; P. A. M. van Hoof; G. C. Van de Steene; J. Papamastorakis; J. A. López
0.4 \rm \, mag
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