Channeled blast wave behavior based on longitudinal instabilities
Channeled blast wave behavior based on longitudinal instabilities
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基于纵向不稳定性的引导爆炸波行为
DOI：
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发表时间：
2001
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：
M. Pohl;I. Lerche;R. Schlickeiser
为了解决如何将准直爆炸波的动能转化为辐射的重要问题，Pohl & Schlickeiser （[CITE]）最近研究了电磁湍流的相对论双流不稳定性。他们已经证明，被卷起的物质在爆炸波中迅速被分解，从而提供相对论性粒子，从而产生辐射。在这里，我们提出了这种系统中静电不稳定性的新计算方法。结果表明，高相对论性光束的静电不稳定性比电磁不稳定性快。然而，即使在通过更快的静电湍流使光束松弛之后，光束相对于电磁波仍然是不稳定的，从而提供了有效产生辐射所需的各向同性。虽然Pohl & Schlickeiser模型中的发射光谱必须进行修改，但基本特征仍然存在。
To address the important issue of how kinetic energy of collimated blast waves is converted into radiation, Pohl & Schlickeiser ([CITE]) have recently investigated the relativistic two-stream instability of electromagnetic turbulence. They have shown that swept-up matter is quickly iso tro pized in the blast wave, which provides relativistic particles and, as a result, radiation. Here we present new calculations for the electrostatic instability in such systems. It is shown that the electrostatic instability is faster than the electromagnetic instability for highly relativistic beams. However, even after relaxation of the beam via the faster electrostatic turbulence, the beam is still unstable with respect to the electromagnetic waves, thus providing the isotropization required for efficient production of radiation. While the emission spectra in the model of Pohl & Schlickeiser have to be modified, the basic characteristics persist.