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Browsing School of Physics (Scholarly Articles) by Subject "Astrophysics - Cosmology and Extragalactic Astrophysics"

Now showing items 1-6 of 6

A connection between star formation activity and cosmic rays in the starburst galaxy M 82

Lang, Mark; Gillanders, Gary (2009)

Although Galactic cosmic rays (protons and nuclei) are widely believed to be dominantly accelerated by the winds and supernovae of massive stars, definitive evidence of this origin remains elusive nearly a century after ...
The Discovery of gamma-Ray Emission From The Blazar RGB J0710+591

Lang, Mark; Gillanders, Gary (2010)

The high-frequency-peaked BL Lacertae object RGB J0710+591 was observed in the very high-energy (VHE; E > 100 GeV) wave band by the VERITAS array of atmospheric Cherenkov telescopes. The observations, taken between 2008 ...
Discovery of Variability in the Very High Energy Gamma-Ray Emission of 1ES 1218+304 with VERITAS

Lang, Mark; Gillanders, Gary (2010)

We present results from an intensive VERITAS monitoring campaign of the high-frequency peaked BL Lac object 1ES 1218+304 in 2008/2009. Although 1ES 1218+304 was detected previously by MAGIC and VERITAS at a persistent level ...
VERITAS 2008 - 2009 monitoring of the variable gamma-ray source M87

Lang, Mark; Gillanders, Gary (2010)

M87 is a nearby radio galaxy that is detected at energies ranging from radio to VHE gamma-rays. Its proximity and its jet, misaligned from our line-of-sight, enable detailed morphological studies and extensive modeling at ...
VERITAS Observations of a Very High Energy Gamma-ray Flare from the Blazar 3C 66A

Lang, Mark; Gillanders, Gary (2009)

The intermediate-frequency peaked BL Lacertae (IBL) object 3C 66A is detected during 2007 - 2008 in VHE (very high energy: E > 100 GeV) gamma-rays with the VERITAS stereoscopic array of imaging atmospheric Cherenkov ...
VERITAS observations of the BL Lac 1ES 1218+304

Lang, Mark; Gillanders, Gary (2009)

The VERITAS collaboration reports the detection of very-high-energy (VHE) 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 ...