Gamma-ray spectrum of RX J1713.7-3946 in the Fermi era and future detection of neutrinos
Gamma-ray spectrum of RX J1713.7-3946 in the Fermi era and future detection of neutrinos
复制标题
DOI：
10.1051/0004-6361:200810845
复制
发表时间：
2008-06
影响因子：
6.5
通讯作者：
R. Yamazaki;K. Kohri;Hideaki Katagiri Hiroshima University;L. University
中科院分区：
文献类型：
--
作者：
R. Yamazaki;K. Kohri;Hideaki Katagiri Hiroshima University;L. University
最近发射的费米伽马射线太空望远镜（Fermi Gamma-ray Space Telescope）将通过观测GeV到TeV的γ射线来确定宇宙射线（CR）质子是否来自超新星遗迹（SNRs），特别是RX J1713.7−3946。如果TeV发射是强子的，那么GeV发射被认为是明亮的，即，质子起源，而轻子则暗淡。我们重新审视上述观点，使用一个简单的理论模型的非线性加速粒子计算的伽马射线光谱的银河系年轻的SNR。如果考虑CR加速的非线性效应，在银河系年轻的SNRs（如RX J1713.7−3946）的γ射线谱中，可能无法区分质子加速和轻子加速的证据。另一方面，未来的km 3级中微子观测可能会在那里找到质子加速的明确证据。
The recently launched satellite, Fermi Gamma-ray Space Telescope, is expected to find out if cosmic-ray (CR) protons are generated from supernova remnants (SNRs), especially RX J1713.7−3946, by observing the GeV-to-TeV γ-rays. The GeV emission is thought to be bright if the TeV emission is hadronic, i.e., of proton origin, while dim if leptonic. We reexamine the above view using a simple theoretical model of nonlinear acceleration of particles to calculate the gamma-ray spectrum of Galactic young SNRs. If the nonlinear effects of CR acceleration are considered, it may be impossible to distinguish the evidence of proton acceleration from leptonic in the γ-ray spectrum of Galactic young SNRs like RX J1713.7−3946. On the other hand, future km 3 -class neutrino observations will likely find a clear evidence of the proton acceleration there.