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arXiv 0901.3470astro-ph.HE
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最近探测到的蟹状星云脉冲星甚高能辐射的同步辐射机制

The Synchrotron Emission Mechanism in the Recently Detected Very High Energy Radiation from the Crab Pulsar

Machabeli George, Osmanov Zaza

摘要:

对最近发现的蟹状星云脉冲星的甚高能脉冲辐射进行了解释。考虑到蟹状星云脉冲星的光学和VHE谱的辐射峰值在同一相位的事实,我们认为这种宽带辐射的来源是空间局域的。结果表明,提供MAGIC切伦科夫望远镜结果的唯一机制应该是同步辐射。我们发现,在磁层正负电子等离子体中,由于回旋不稳定性,俯仰角变得不为零,这导致了有效的同步加速机制,并在轻圆柱尺度上得到加强。我们还估计VHE辐射光谱指数等于-1/2。

英文摘要:

Interpretation of the recently discovered very high energy (VHE) pulsed emission from the Crab pulsar is presented. By taking into account the fact that Crab pulsar's radiation for the optical and VHE spectrum peak at the same phases, we argue that the source of this broad band emission is spatially localized. It is shown that the only mechanism providing the results of the MAGIC Cherenkov telescope, should be the synchrotron radiation. We find that in the magnetospheric electron-positron plasma, due to the cyclotron instability, the pitch angle becomes non-vanishing, which leads to the efficient synchrotron mechanism, intensifying on the light cylinder lengthscales. We also estimate the VHE radiation spectral index to be equal to -1/2.

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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