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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 ...
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 ...
Detection of extended vhe gamma ray emission from g106.3+2.7 with veritas
(IOP Publishing, 2009-08-25)
We report the detection of very-high-energy (VHE) gamma-ray emission from supernova remnant (SNR) G106.3+2.7. Observations performed in 2008 with the VERITAS atmospheric Cherenkov gamma-ray telescope resolve extended ...
Radio imaging of the very-high-energy -ray emission region in the central engine of a radio galaxy
(American Association for the Advancement of Science (AAAS), 2009-07-02)
The accretion of matter onto a massive black hole is believed to feed the relativistic plasma jets found in many active galactic nuclei (AGN). Although some AGN accelerate particles to energies exceeding 10(12) electron ...
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 ...