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arXiv 1803.08697astro-ph.HE
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相对论加速器的未来X射线偏振测量:PWNe和SNR

Future X-ray Polarimetry of Relativistic Accelerators: PWNe and SNRs

N. Bucciantini

摘要:

超新星遗迹和脉冲星风星云是天空中最重要的非热X射线源,也是最近的实验室,可以研究相对论等离子体动力学和粒子加速。作为强同步辐射源,它们是X射线偏振测量的理想候选者,事实上,蟹状星云是目前唯一一个探测到X射线偏振的天体。未来的极化测量可能会为我们提供关键信息的湍流水平,预计在粒子加速网站,连同空间和时间的相干性的磁场几何形状,使我们能够设置更强的约束我们的加速模型。在PWNe中,它还允许我们估计内部耗散的水平。我将简要回顾SNR/PWNe中偏振特征的现有知识,并将说明我们希望通过IXPE/XIPE等未来任务实现的目标。

英文摘要:

Supernova Remnants and Pulsar Wind Nebulae are among the most significant sources of non-thermal X-rays in the sky, and the closest laboratories where relativistic plasma dynamics and particle acceleration can be investigated. Being strong synchrotron emitters, they are ideal candidates for X-ray polarimetry, and indeed the Crab nebula is up to present the only object where X-ray polarization has been detected with a high level of significance. Future polarimetric measures will likely provide us crucial informations on the level of turbulence that is expected at the particle acceleration sites, together with the spacial and temporal coherence of the magnetic field geometry, enabling us to set stronger constraints on our acceleration models. In PWNe it will also allow us to estimate the level of internal dissipation. I will briefly review the current knowledge on the polarization signatures in SNR/PWNe and I will illustrate what can we hope to achieve with future missions like IXPE/XIPE.

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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