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The flux variability of markarian 501 in very high energy gamma rays
(IOP Publishing, 1999-06-20)
The BL Lacertae object Markarian 501 was identified as a source of gamma-ray emission at the Whipple Observatory in 1995 March. Here we present a flux variability analysis on several timescales of the 233 hr data set ...
Gamma-ray observations of the be/pulsar binary 1a 0535+262 during a giant x-ray outburst
(IOP Publishing, 2011-05-11)
Giant X-ray outbursts, with luminosities of about 10(37) erg s(-1), are observed roughly every five years from the nearby Be/pulsar binary 1A 0535+262. In this article, we present observations of the source with VERITAS ...
Tev and multi-wavelength observations of mrk 421 in 2006-2008
(IOP Publishing, 2011-08-10)
We report on TeV gamma-ray observations of the blazar Mrk 421 (redshift of 0.031) with the VERITAS observatory and the Whipple 10m Cherenkov telescope. The excellent sensitivity of VERITAS allowed us to sample the TeV ...
Evidence for long-term gamma-ray and x-ray variability from the unidentified tev source hess j0632+057
(IOP Publishing, 2009-05-28)
HESS J0632+057 is one of only two unidentified very-high-energy gamma-ray sources which appear to be point-like within experimental resolution. It is possibly associated with the massive Be star MWC 148 and has been suggested ...
Veritas discovery of >200 gev gamma-ray emission from the intermediate-frequency-peaked bl lacertae object w comae
(IOP Publishing, 2008-08-20)
We report the detection of very high energy gamma- ray emission from the intermediate- frequency- peaked BL Lacertae object W Comae (z = 0.102) by VERITAS. The source was observed between 2008 January and April. A strong ...
Multiwavelength observations of a tev-flare from w comae
(IOP Publishing, 2009-11-24)
We report results from an intensive multiwavelength campaign on the intermediate-frequency-peaked BL Lacertae object W Com (z = 0.102) during a strong outburst of very high energy gamma-ray emission in 2008 June. The very ...
Multiwavelength observations of ls i +61° 303 with veritas,swift, andrxte
(IOP Publishing, 2009-07-08)
We present results from a long-term monitoring campaign on the TeV binary LSI +61 degrees 303 with VERITAS at energies above 500 GeV, and in the 2-10 keV hard X-ray bands with RXTE and Swift, sampling nine 26.5 day orbital ...
Veritas search for vhe gamma-ray emission from dwarf spheroidal galaxies
(IOP Publishing, 2010-08-18)
Indirect dark matter searches with ground-based gamma-ray observatories provide an alternative for identifying the particle nature of dark matter that is complementary to that of direct search or accelerator production ...
Erratum: “veritas observations of a very high energy γ-ray flare from the blazar 3c 66a” (2009, apj, 693, l104)
(IOP Publishing, 2010-09-16)
A search for tev gamma‐ray emission from high‐peaked flat‐spectrum radio quasars using the whipple air cerenkov telescope
(IOP Publishing, 2004-10-01)
Blazars have traditionally been separated into two broad categories based on their optical emission characteristics. Blazars with faint or no emission lines are referred to as BL Lacertae objects ( BL Lacs), and blazars ...