论文标题
超新星残留RX J1713.7-3946与两相培养基相互作用的伽马射线排放
The Gamma-Ray Emission from the Supernova Remnant RX J1713.7-3946 Interacting with Two-phase Medium
论文作者
论文摘要
我们研究了超新星残留物（SNR）RX J1713.7-3946的伽马射线的起源。使用分析模型，我们计算SNR周围宇宙射线（CRS）的分布。在先前研究的结果中，我们假设SNR与两相星际培养基（ISM）相互作用，其中密集的团块被脆弱的插座培养基包围。我们还假设只有高能质子（〜> teV）才能穿透密集的团块。我们发现，质子产生的pi^0-decayγ射线再现了在〜TEV处峰值的观察到的伽马射线光谱。另一方面，最近已经指出，在SNR上观察到的ISM柱密度（N_P），X射线表面亮度（I_X）和Gamma-ray表面亮度（I_G），横跨SNR的网格点，在SNR上形成平面，在三维（3D）空间（N_P，I_X，I_G）的三维（3D）空间中。我们发现，如果ISM或CR电子与蛋白质比不一致，则自然会复制平面构型。我们表明，3D空间中观察到的数据的偏移可用于识别SNR的方向方向变化。
We study the origin of gamma rays from the supernova remnant (SNR) RX J1713.7-3946. Using an analytical model, we calculate the distribution of cosmic rays (CRs) around the SNRs. Motivated by the results of previous studies, we assume that the SNR is interacting with two-phase interstellar medium (ISM), where dense clumps are surrounded by tenuous interclump medium. We also assume that only higher-energy protons (~> TeV) can penetrate the dense clumps. We find that pi^0-decay gamma rays produced by protons reproduce the observed gamma-ray spectrum peaked at ~TeV. On the other hand, it has recently been indicated that the observed ISM column density (N_p), the X-ray surface brightness (I_X), and the gamma-ray surface brightness (I_g) at grid points across the SNR form a plane in the three-dimensional (3D) space of (N_p, I_X, I_g). We find that the planar configuration is naturally reproduced if the ISM or the CR electron-to-proton ratio is not spherically uniform. We show that the shift of the observed data in the 3D space could be used to identify which of the quantities, the ISM density, the CR electron-to-proton ratio, or the magnetic field, varies in the azimuthal direction of the SNR.
