Recently, the High Energy Stereoscopic System (H.E.S.S.) reported two new interesting results for a γ-ray emitting supernova remnant, RX J1713.7−3946 (G347.3−0.5). The first result is the establishment of a broken power-law spectrum of GeV–TeV γ-rays. The other is a more extended γ-ray spatial profile than the one in the X-ray band. In this paper, we show both of these results can be explained by inverse Compton emission from accelerated electrons. If the maximum energy of electrons being accelerated decreases with time, the broken power-law spectrum can be generated by accumulation. Furthermore, the extended component of γ-ray profile can be interpreted as a CR precursor of currently accelerated electrons.

最近，高能立体观测系统（HESS）对发射γ射线的超新星遗迹RX J1713.7-3946（G347.3-0.5）报告了两个新的有趣结果。第一个结果是建立GeV的-TEV的破幂律谱的γ射线。另一个是比X射线波段中更宽的γ射线空间轮廓。在本文中，我们表明这两个结果都可以用加速电子的康普顿逆发射来解释。如果被加速的电子的最大能量随时间减小，则可以通过累积来生成破裂的幂律谱。此外，可以将γ射线分布的扩展分量解释为当前加速电子的CR前体。