超新星遗迹RX J1713发射的gamma-ray的强子与轻子起源。7 -3946
Hadronic versus leptonic origin of the gamma-ray emission from Supernova Remnant RX J1713.7-3946
摘要：
目标。本文根据新的观测结果和理论观点讨论了超新星遗迹RX J1713.7-3946 γ射线的强子起源和轻子起源。方法.从理论上分析了γ射线辐射与非热X射线辐射之间存在良好的空间相关性。此外，最近发布的新H.E.S.S.观测更精确地定义了能谱，特别是在仪器动态范围的高能和低能端。现在有更多的约束性X射线观测从朱雀，大大超过10千电子伏。这些新的数据与作者以前的理论预测相比，无论是占主导地位的强子和简单的逆康普顿模型。结果除了著名的MHD相关性之间的磁场强度和等离子体密度的变化，强调的风泡结构的残留物，有人认为，区域的磁场放大也与加速的核粒子和相关的流不稳定性的密度增加。因此，非热X射线和\gr发射的相关性不仅是可能的，甚至是预期的强子发射方案。伽马射线的轻子起源需要一个难以置信的均匀强度的磁场。观测和理论推断，在这个残余物中的大量的场放大与最近的X射线和\gr的观测结果非常一致。结论.所有这些都有力地证明了强子\grs在\gr发射光谱中的主导地位，更不用说核宇宙线粒子对这个遗迹中的非热能有着压倒性的贡献。
英文摘要：
Aims. The hadronic vs. leptonic origin of the gamma-ray emission from the Supernova Remnant RX J1713.7-3946 is discussed both in the light of new observations and from a theoretical point of view. Methods. The existing good spatial correlation of the gamma-ray emission and the nonthermal X-ray emission is analyzed theoretically. In addition, the recently published new H.E.S.S. observations define the energy spectrum more precisely, in particular at the high and low energy ends of the instrument's dynamical range. There now exist much more constraining X-ray observations from Suzaku that extend substantially beyond 10 keV. These new data are compared with the authors' previous theoretical predictions, both for dominant hadronic and for simple inverse Compton models. Results. Apart from the well-known MHD correlation between magnetic field strength and plasma density variations, emphasized by the wind-bubble-structure of the remnant, it is argued that the regions of magnetic field amplification also are correlated with enhanced densities of accelerated nuclear particles and the associated streaming instabilities. Therefore a correlation of nonthermal X-ray and \gr emission is not only possible but even to be expected for a hadronic emission scenario. A leptonic origin of the gamma-ray emission would require an implausibly uniform strength of the magnetic field. The observational and theoretical inferences about substantial field amplification in this remnant agree very well with the recent X-ray and \gr observations. Conclusions. All this argues strongly for the dominance of hadronic \grs in the \gr emission spectrum and a fortiori for an overwhelming contribution of nuclear cosmic ray particles to the nonthermal energy in this remnant.
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