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arXiv 1011.4775astro-ph.GA
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超新星遗迹中的放射性和电子加速

Radioactivity and Electron Acceleration in Supernova Remnants

V. N. Zirakashvili, F. A. Aharonian

摘要:

我们认为,放射性核的衰变有关的$^{44}$ Ti和$^{56}$ Ni在超新星爆炸喷射可以提供一个巨大的池温和的相对论性正电子和电子,进一步加速到超相对论能量的反向和正向冲击。这两个独立的过程之间的有趣的联系-放射性和粒子加速-可以是一个线索,解决众所周知的理论问题的电子注入超新星遗迹。在最亮的射电源Cas A的情况下,我们证明,放射性可以提供足够数量的高能电子和正电子的观测数据的解释,只要他们是随机的预加速的上游地区的前向和反向冲击。

英文摘要:

We argue that the decays of radioactive nuclei related to $^{44}$Ti and $^{56}$Ni ejected during supernova explosions can provide a vast pool of mildly relativistic positrons and electrons which are further accelerated to ultrarelativistic energies by reverse and forward shocks. This interesting link between two independent processes - the radioactivity and the particle acceleration - can be a clue for solution of the well known theoretical problem of electron injection in supernova remnants. In the case of the brightest radio source Cas A, we demonstrate that the radioactivity can supply adequate number of energetic electrons and positrons for interpretation of observational data provided that they are stochastically pre-accelerated in the upstream regions of the forward and reverse shocks.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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