PLASMA EFFECTS ON EXTRAGALACTIC ULTRA-HIGH-ENERGY COSMIC RAY HADRON BEAMS IN COSMIC VOIDS
PLASMA EFFECTS ON EXTRAGALACTIC ULTRA-HIGH-ENERGY COSMIC RAY HADRON BEAMS IN COSMIC VOIDS
复制标题
宇宙空洞中河外超高能宇宙线强子束的等离子体效应
DOI：
10.1088/0004-637x/789/1/84
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发表时间：
2014
期刊：
影响因子：
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通讯作者：
R. Schlickeiser
中科院分区：
文献类型：
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作者：
S. Krakau;R. Schlickeiser
研究了非磁化星际介质中极相对论强子束(Γb≈10 6)在集体静电和非周期电磁涨落激发下的线性不稳定性。这一分析对于河外极端相对论宇宙射线(E>；1015 eV)从其遥远的源向地球的传播是重要的。我们计算的最小不稳定性增长时间比IGM中的宇宙线传播时间短一个数量级。由于非线性效应，特别是调制不稳定性，宇宙射线束可以稳定并可以通过IGM传输而几乎没有能量损失。
The linear instability of an ultrarelativistic hadron beam (Γb ≈ 106) in the unmagnetized intergalactic medium (IGM) is investigated with respect to the excitation of collective electrostatic and aperiodic electromagnetic fluctuations. This analysis is important for the propagation of extragalactic ultrarelativistic cosmic rays (E > 1015 eV) from their distant sources to Earth. We calculate minimum instability growth times that are orders of magnitude shorter than the cosmic ray propagation time in the IGM. Due to nonlinear effects, especially the modulation instability, the cosmic ray beam stabilizes and can propagate with nearly no energy loss through the IGM.