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arXiv 2006.10348astro-ph.HEastro-ph.IM
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无线电干涉测量法用于观测cosmic-ray引起的广泛空气簇射

Radio interferometry applied to the observation of cosmic-ray induced extensive air showers

Harm Schoorlemmer, Washington R. Carvalho

摘要:

我们开发了一种射电干涉技术,用于观测宇宙粒子引发的大范围空气簇射。在这个证明的原则研究中,我们表明,广泛的空气淋浴的属性可以得到高精度的一个简单的方式。当不同的接收器之间的时间同步低于$\sim$ 1纳秒,可以实现,方向重建分辨率的$< 0.2^\circ$和分辨率上的簇射最大值的深度$<10$ g/cm $^2$获得在整个参数范围内的研究,甚至更高的精度为倾斜的传入方向。此外,通过将所开发的方法应用于密集的无线电天线阵列,可以显着降低无线电检测大范围空气阵雨的能量阈值。所提出的方法可以被纳入操作和未来的宇宙粒子观测站,其高精度,它有可能在解开超高能宇宙粒子通量的组成发挥关键作用。

英文摘要:

We developed a radio interferometric technique for the observation of extensive air showers initiated by cosmic particles. In this proof-of-principle study we show that properties of extensive air showers can be derived with high accuracy in a straightforward manner. When time synchronisation below $\sim$1 ns between different receivers can be achieved, direction reconstruction resolution of $< 0.2^\circ$ and resolution on the depth of shower maximum of $<10$ g/cm$^2$ are obtained over the full parameter range studied, with even higher accuracy for inclined incoming directions. In addition, by applying the developed method to dense arrays of radio antennas, the energy threshold for the radio detection of extensive air showers can be significantly lowered. The proposed method can be incorporated in operational and future cosmic particle observatories and with its high accuracy it has the potential to play a crucial role in unravelling the composition of the ultra-high-energy cosmic-particle flux.

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