Astronomy and Astrophysics – Astrophysics – High Energy Astrophysical Phenomena
Scientific paper
2009-07-22
Astronomy and Astrophysics
Astrophysics
High Energy Astrophysical Phenomena
Proc. 31st ICRC, Lodz, Poland, 2009
Scientific paper
The H.E.S.S. extended Galactic plane survey revealed the presence of a new extended TeV gamma-ray source, HESSJ1503-582, with no obvious counterpart at other wavelengths. The source is, however, coincident with an HI structure with a velocity significantly different from that of galactic rotation - a so-called "Forbidden Velocity Wing". These structures have been suggested as the fast moving shells and filaments associated with the oldest supernova remnants in our galaxy. The detection of TeV gamma-ray emission from these structures might indicate that supernova remnants remain efficient particle accelerators for much longer than is commonly believed. Here we report on recent VERITAS observations of one of these structures, FVW 190.2+1.1, which shows a clear shell-like morphology in the HI maps.
for the VERITAS Collaboration
Holder Jamie
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