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Multiwavelength Observations of the Blazar Mrk 421 in December 2002 and January 2003
P. Rebillot, M. Aller, H. Aller +5
We report on a multiwavelength campaign on the TeV gamma-ray blazar Markarian (Mrk) 421 performed during December 2002 and January 2003. These target of opportunity observations we…
Status and Performance of the First VERITAS telescope
J. Holder
The first of the four atmospheric Cherenkov telescopes of the VERITAS array has been in operation at the Mt. Hopkins base camp since January 2005. The telescope has met all specifi…
Exploiting VERITAS Timing Information
J. Holder
The 499 pixel photomultiplier cameras of the VERITAS gamma ray telescopes are instrumented with 500MHz sampling Flash ADCs. This paper describes a preliminary investigation of the…
Absolute calibration of imaging atmospheric Cherenkov telescopes
N. Shepherd, J. H. Buckley, O. Celik +5
A calibrated laser pulse propagating through the atmosphere produces a flash of Rayleigh scattered light with an intensity that can be calculated very accurately when atmospheric c…
Using ACT arrays as Intensity Interferometers
S. LeBohec, J. Holder
The Narrabri intensity interferometer was successfully used until 1974 to observe 32 stars, all brighter than B=+2.5, among which some were found to have an angular diameter as sma…
Optical SETI with Imaging Cherenkov Telescopes
J. Holder, P. Ashworth, S. LeBohec +2
The idea of searching for optical signals from extraterrestrial civilizations has become increasingly popular over the last five years, with dedicated projects at a number of obser…
A Multi-wavelength View of the TeV Blazar Markarian 421: Correlated Variability, Flaring, and Spectral Evolution
M. Blazejowski
We report results from a multi-wavelength monitoring campaign on Mrk 421 over the period of 2003-2004. The source was observed simultaneously at TeV and X-ray energies, with suppor…
Spectrum of Very High Energy Gamma-Rays from the blazar 1ES1959+650 during Flaring Activity in 2002
M. K. Daniel
The blazar 1ES 1959+650 was observed in a flaring state with the Whipple 10 m Imaging Atmospheric Cherenkov Telescope during May of 2002. A spectral analysis has been carried out o…