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arXiv 1702.00283astro-ph.IM
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用SKA1-low高精度射电测量最大阵雨深度的初步模拟研究

Initial simulation study on high-precision radio measurements of the depth of shower maximum with SKA1-low

Anne Zilles, Stijn Buitink, Tim Huege

摘要:

如LOFAR所示,使用密集的无线电天线阵列探测地球大气层中宇宙射线引发的大范围空气簇射,可以测量单个簇射的最大簇射深度,其统计不确定性小于$20\,g/cm^2$。这使得详细研究$10^{17}\,eV$周围能量区域的质量组成成为可能,在那里可能发生从银河系到河外起源的转变。由于SKA 1-low将提供具有大带宽$50-350\,MHz$的更密集且非常均匀的天线阵列,因此预期在$X_{\max}$重构上达到小于$10\,g/cm^2$的不确定性。我们目前的模拟研究的第一个结果,重点是重建淋浴的深度最大的个人淋浴SKA 1-低测量的潜力。此外,还将讨论分析中包括的天线数量或所考虑的频率带宽等各种参数的可能影响。

英文摘要:

As LOFAR has shown, using a dense array of radio antennas for detecting extensive air showers initiated by cosmic rays in the Earth's atmosphere makes it possible to measure the depth of shower maximum for individual showers with a statistical uncertainty less than $20\,g/cm^2$. This allows detailed studies of the mass composition in the energy region around $10^{17}\,eV$ where the transition from a Galactic to an Extragalactic origin could occur. Since SKA1-low will provide a much denser and very homogeneous antenna array with a large bandwidth of $50-350\,MHz$ it is expected to reach an uncertainty on the $X_{\max}$ reconstruction of less than $10\,g/cm^2$. We present first results of a simulation study with focus on the potential to reconstruct the depth of shower maximum for individual showers to be measured with SKA1-low. In addition, possible influences of various parameters such as the numbers of antennas included in the analysis or the considered frequency bandwidth will be discussed.

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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