The HEGRA system of Imaging Atmospheric Cherenkov Telescopes (IACTs) has been used since the beginning of 1997 for a comprehensive study of the gamma-ray emission from the BL Lac objects Mkn 501 and Mkn 421 in the energy range above 500 GeV. Here we summarize the TeV characteristics of Mkn 501 during its spectacular outburst in 1997 and give an overview of the 1997 and 1998 Mkn 421 results
4 pages, 3 figures. To appear in the proceedings of the XIth rencontres de Blois, June 27 - July 3, ...
12 pages, 9 figures, accepted for publication in Astronomy & AstrophysicsThe TeV-emitting BL Lac obj...
A sample of 54 selected Active Galactic Nuclei (AGN) has been observed with the HEGRA stereoscopic s...
The HEGRA system of five Imaging Atmospheric Cherenkov Telescopes (IACTs) has been used in 2000 and ...
We present the results on the TeV gamma emission from Mkn 501 in 1997 obtained with the standalone C...
The HEGRA system of 4 Imaging Atmospheric Cherenkov Telescopes (IACTs) has been used since March 199...
A detection of TeV gamma-rays from Mkn 501 is reported, based on observations made between March and...
Since February 1997 the BL Lac object Mkn 501 is in a ``high state'' of gamma-ray emission. The HEGR...
The nearby BL Lacertae (BL Lac) object Markarian 421 (Mkn 421) at a red shift z = 0.031 was observed...
The BL Lac object 1ES1959+650 has been observed by the HEGRA Collaboration in the years 2000, 2001 a...
A sample of 54 selected Active Galactic Nuclei (AGN) has been observed with the HEGRA stereoscopic s...
Recent results obtained with the HEGRA system of imaging Cherenkov telescopes on the TeV emission of...
A sample of 54 selected Active Galactic Nuclei (AGN) has been observed with the HEGRA stereoscopic s...
The gamma-ray emission above 250 GeV from the BL Lac object Markarian 421 was observed by the CAT Ch...
During the 1997 outburst of Mkn 501 extended observations in the presence of moonlight have been car...
4 pages, 3 figures. To appear in the proceedings of the XIth rencontres de Blois, June 27 - July 3, ...
12 pages, 9 figures, accepted for publication in Astronomy & AstrophysicsThe TeV-emitting BL Lac obj...
A sample of 54 selected Active Galactic Nuclei (AGN) has been observed with the HEGRA stereoscopic s...
The HEGRA system of five Imaging Atmospheric Cherenkov Telescopes (IACTs) has been used in 2000 and ...
We present the results on the TeV gamma emission from Mkn 501 in 1997 obtained with the standalone C...
The HEGRA system of 4 Imaging Atmospheric Cherenkov Telescopes (IACTs) has been used since March 199...
A detection of TeV gamma-rays from Mkn 501 is reported, based on observations made between March and...
Since February 1997 the BL Lac object Mkn 501 is in a ``high state'' of gamma-ray emission. The HEGR...
The nearby BL Lacertae (BL Lac) object Markarian 421 (Mkn 421) at a red shift z = 0.031 was observed...
The BL Lac object 1ES1959+650 has been observed by the HEGRA Collaboration in the years 2000, 2001 a...
A sample of 54 selected Active Galactic Nuclei (AGN) has been observed with the HEGRA stereoscopic s...
Recent results obtained with the HEGRA system of imaging Cherenkov telescopes on the TeV emission of...
A sample of 54 selected Active Galactic Nuclei (AGN) has been observed with the HEGRA stereoscopic s...
The gamma-ray emission above 250 GeV from the BL Lac object Markarian 421 was observed by the CAT Ch...
During the 1997 outburst of Mkn 501 extended observations in the presence of moonlight have been car...
4 pages, 3 figures. To appear in the proceedings of the XIth rencontres de Blois, June 27 - July 3, ...
12 pages, 9 figures, accepted for publication in Astronomy & AstrophysicsThe TeV-emitting BL Lac obj...
A sample of 54 selected Active Galactic Nuclei (AGN) has been observed with the HEGRA stereoscopic s...