The HEGRA system of five Imaging Atmospheric Cherenkov Telescopes (IACTs) has been used in 2000 and 2001 for a comprehensive study of the #-ray emission from the BL Lac objects Mkn 421 and Mkn 501 in the energy range above 500 GeV. Here we summarize the TeV characteristics of Mkn 421 in 2000 and 2001 and of Mkn 501 in 2000. In particular, an unprecedented prolonged highintensity state of Mkn 421 in Jan. /Feb. 2001 enabled detailed temporal and spectral studies
Abstract: We have been operating a 7 element atmospheric Cherenkov telescope array called HAGAR at v...
12 pages, 9 figures, accepted for publication in Astronomy & AstrophysicsThe TeV-emitting BL Lac obj...
4 pages, 3 figures. To appear in the proceedings of the XIth rencontres de Blois, June 27 - July 3, ...
The HEGRA system of Imaging Atmospheric Cherenkov Telescopes (IACTs) has been used since the beginni...
The HEGRA system of 4 Imaging Atmospheric Cherenkov Telescopes (IACTs) has been used since March 199...
We present the results on the TeV gamma emission from Mkn 501 in 1997 obtained with the standalone C...
The nearby BL Lacertae (BL Lac) object Markarian 421 (Mkn 421) at a red shift z = 0.031 was observed...
Recent results obtained with the HEGRA system of imaging Cherenkov telescopes on the TeV emission of...
Since February 1997 the BL Lac object Mkn 501 is in a ``high state'' of gamma-ray emission. The HEGR...
The BL Lac object 1ES1959+650 has been observed by the HEGRA Collaboration in the years 2000, 2001 a...
A detection of TeV gamma-rays from Mkn 501 is reported, based on observations made between March and...
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, 5 figures, to appear in Proc. of the SF2A conference "Semaine de l'Astrophysique Francaise"...
A sample of 54 selected Active Galactic Nuclei (AGN) has been observed with the HEGRA stereoscopic s...
Abstract: We have been operating a 7 element atmospheric Cherenkov telescope array called HAGAR at v...
12 pages, 9 figures, accepted for publication in Astronomy & AstrophysicsThe TeV-emitting BL Lac obj...
4 pages, 3 figures. To appear in the proceedings of the XIth rencontres de Blois, June 27 - July 3, ...
The HEGRA system of Imaging Atmospheric Cherenkov Telescopes (IACTs) has been used since the beginni...
The HEGRA system of 4 Imaging Atmospheric Cherenkov Telescopes (IACTs) has been used since March 199...
We present the results on the TeV gamma emission from Mkn 501 in 1997 obtained with the standalone C...
The nearby BL Lacertae (BL Lac) object Markarian 421 (Mkn 421) at a red shift z = 0.031 was observed...
Recent results obtained with the HEGRA system of imaging Cherenkov telescopes on the TeV emission of...
Since February 1997 the BL Lac object Mkn 501 is in a ``high state'' of gamma-ray emission. The HEGR...
The BL Lac object 1ES1959+650 has been observed by the HEGRA Collaboration in the years 2000, 2001 a...
A detection of TeV gamma-rays from Mkn 501 is reported, based on observations made between March and...
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, 5 figures, to appear in Proc. of the SF2A conference "Semaine de l'Astrophysique Francaise"...
A sample of 54 selected Active Galactic Nuclei (AGN) has been observed with the HEGRA stereoscopic s...
Abstract: We have been operating a 7 element atmospheric Cherenkov telescope array called HAGAR at v...
12 pages, 9 figures, accepted for publication in Astronomy & AstrophysicsThe TeV-emitting BL Lac obj...
4 pages, 3 figures. To appear in the proceedings of the XIth rencontres de Blois, June 27 - July 3, ...
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