对“禁止速度机翼”的VERITAS观测
VERITAS Observations of a "Forbidden Velocity Wing"
摘要：
H.E.S.S.扩展银河平面勘测显示存在一个新的扩展TeV伽马射线源HESSJ 1503 -582，在其他波长上没有明显的对应物。然而，这个源与HI结构重合，其速度与银河系旋转的速度明显不同-所谓的“禁止速度翼”。这些结构被认为是与我们银河系中最古老的超新星遗迹有关的快速移动的壳和细丝。从这些结构中检测到TeV的伽马射线发射可能表明超新星遗迹保持有效的粒子加速器的时间比通常认为的要长得多。在这里，我们报告了最近VERITAS对其中一个结构的观测，FVW 190.2+1.1，它在HI图中显示出清晰的壳状形态。
英文摘要：
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.
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