Showing 1998Show all
3 papers · 1 filter
astro-ph1998
Host galaxies and environment of BL Lac objects
J. Heidt
Since the last meeting on BL Lac objects 10 years ago, BL Lac host galaxies and their cluster environment have gained much attention. Hence, our current knowledge of the properties…
astro-ph1998
The optical/IR counterpart of the 3 July 1998 gamma-ray burst and its evolution
A. J. Castro-Tirado, M. R. Zapatero-Osorio, J. Gorosabel +21
We imaged the X-ray error box of GRB 980703, beginning 22.5 hours after the gamma--ray event, in both the optical R and near-infrared H bands. A fading optical/IR object was detect…
astro-ph1998
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…