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Optical Monitoring of PKS 2155-304 during August-September 2004 with the KVA telescope
S. Ciprini, E. Lindfors, K. Nilsson +1
The southern gamma-ray blazar PKS 2155-304 is one of the brightest and most intensively studied prototypes of BL Lac object. PKS 2155-304 has recently aroused the interest of Chere…
Multifrequency Observations of the Gamma-Ray Blazar 3C 279 in Low-State during Integral AO-1
W. Collmar, M. Böttcher, V. Burwitz +19
We report first results of a multifrequency campaign from radio to hard X-ray energies of the prominent gamma-ray blazar 3C 279 during the first year of the INTEGRAL mission. The v…
1ES 1741+196: a BL Lacertae object in a triplet of interacting galaxies?
J. Heidt, K. Nilsson, J. W. Fried +2
We present subarcsecond resolution imaging and spectroscopy of the BL Lac object 1ES 1741+196 and neighboring galaxies. Based on 2-dimensional modelling, the host galaxy of 1ES 174…
High-resolution imaging of Einstein Slew Survey BL Lacertae objects
J. Heidt, K. Nilsson, A. Sillanpaeae +2
High-resolution images of 7 newly identified BL Lac objects (among them one BL Lac candidate) at z < 0.2 from the Einstein Slew Survey are presented for the first time. In all case…