During the last 20 years, TeV astronomy has turned from a fledgling field, with only a handful
of sources, into a fully-developed astronomy discipline, broadening our knowledge on a …

Very high energy (VHE) γ-rays constitute one of the main pillars of high energy astrophysics.
Gamma-rays are produced under extreme relativistic conditions in the Universe. VHE γ-rays …

We present TeV gamma-ray observations of the Crab Nebula, the standard reference source
in ground-based gamma-ray astronomy, using data from the High Altitude Water Cherenkov …

We present a sophisticated γ-ray likelihood reconstruction technique for imaging
atmospheric Cerenkov telescopes. The technique is based on the comparison of the raw …

We present a high-performance event reconstruction algorithm: an Image Pixel-wise fit for
Atmospheric Cherenkov Telescopes (ImPACT). The reconstruction algorithm is based …

The γ-ray emission above from the BL Lac object Markarian 421 was observed by the CAT
Cherenkov imaging telescope between December, 1996, and June, 2000. In 1998, the …

For air showers observed simultaneously by more than two imaging atmospheric Cherenkov
telescopes, the shower geometry is overconstrained by the images and image information …

We present a method of atmospheric Cherenkov imaging which reconstructs the unique
arrival direction of TeV gamma rays using a single telescope. The method is derived …

Most of what we know of cosmic gamma rays has come from spacecraft, but at energies
above tens of GeV it has become possible to make observations with ground-based …

The BL Lac object Mrk 501 went into a very high state of activity during 1997, both in VHE
gamma-rays and X-rays. We present here results from observations at energies above 250 …