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Discovery of spectral variability of markarian 421 at t[clc]e[/clc]v energies
(IOP Publishing, 2002-08-10)
The detection of spectral variability of the gamma-ray blazar Mrk 421 at TeV energies is reported. Observations with the Whipple Observatory 10 m gamma-ray telescope taken in 2000/2001 revealed exceptionally strong and ...
A multiwavelength view of the tev blazar markarian 421: correlated variability, flaring, and spectral evolution
(IOP Publishing, 2005-09-01)
We report results from an intensive multiwavelength monitoring campaign on the TeV blazar Mrk 421 over the period of 2003 - 2004. The source was observed simultaneously at TeV energies with the Whipple 10 m telescope and ...
Multiwavelength observations of the blazar markarian 421 in 2002 december and 2003 january
(IOP Publishing, 2006-04-20)
We report on a multiwavelength campaign on the TeV gamma-ray blazar Mrk 421 performed during 2002 December and 2003 January. These target of opportunity observations were initiated by the detection of X-ray and TeV gamma-ray ...
Constraints on the very high energy emission from bl lacertae objects
(IOP Publishing, 2004-03-01)
We present results from observations of 29 BL Lacertae objects, taken with the Whipple Observatory 10 m gamma-ray telescope between 1995 and 2000. The observed objects are mostly at low redshift (z<0.2), but observations ...
Detection of t[clc]e[/clc]v gamma rays from the bl lacertae object 1es 1959+650 with the whipple 10 meter telescope
(IOP Publishing, 2003-01-20)
We present the first strong detection of very high energy gamma-rays from the close (z=0.048) X-ray-selected BL Lacertae object 1ES 1959+650. Observations were made with the Whipple 10 m telescope on Mount Hopkins, Arizona, ...
A survey of unidentified egret sources at very high energies
(IOP Publishing, 2005-05-10)
The Whipple Observatory 10 m γ-ray telescope has been used to survey the error boxes of EGRET unidentified sources in an attempt to find counterparts at energies of 350 GeV and above. Twenty-one unidentified sources ...
Veritas observations of a very high energy γ-ray flare from the blazar 3c 66a
(IOP Publishing, 2009-02-18)
The intermediate-frequency peaked BL Lacertae (IBL) object 3C 66A is detected during 2007-2008 in VHE ( very high energy; E &gt; 100 GeV) gamma rays with the VERITAS stereoscopic array of imaging atmospheric Cherenkov ...
Veritas observations of the bl lac object 1es 1218+304
(IOP Publishing, 2009-04-07)
The VERITAS collaboration reports the detection of very-high-energy gamma-ray emission from the high-frequency-peaked BL Lac object 1ES 1218+304 located at a redshift of z = 0.182. A gamma-ray signal was detected with a ...
Observation of gamma‐ray emission from the galaxy m87 above 250 gev with veritas1
(IOP Publishing, 2008-05-20)
The multiwavelength observation of the nearby radio galaxy M87 provides a unique opportunity to study in detail processes occurring in active galactic nuclei from radio waves to TeV gamma-rays. Here we report the detection ...
Search for tev emissions from pulsars in binary systems
(IOP Publishing, 2003-02-01)
A survey of binary systems containing pulsars was conducted, with the intention of detecting Galactic sources of very high energy gamma-ray emission. Observations were carried out with the Whipple 10 m imaging atmospheric ...