  Recently, the High Energy Stereoscopic System (H.E.S.S.) reported two new
interesting results for a gamma-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 gamma-rays. The other is a more extended gamma-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 gamma-ray profile can be interpreted as
a CR precursor of currently accelerated electrons.
