Measurement of the Radiation Energy in the Radio Signal of Extensive Air Showers as a Universal Estimator of Cosmic-Ray Energy
Measurement of the Radiation Energy in the Radio Signal of Extensive Air Showers as a Universal Estimator of Cosmic-Ray Energy
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DOI：
10.1103/physrevlett.116.241101
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发表时间：
2016-06-14
影响因子：
8.6
通讯作者：
Zuccarello, F.
中科院分区：
文献类型：
--
作者：
Aab, A.;Abreu, P.;Zuccarello, F.
我们测量的能量发射的广泛的空气阵雨的形式，无线电发射的频率范围从30到80兆赫。利用Pierre Auger天文台的精确能量标度，我们获得了能量为1 EeV的宇宙线垂直于0.24 G的地磁场到达的辐射能量为15.8 +/- 0.7（stat）+/- 6.7（syst）MeV，与宇宙线能量成二次方。与最先进的第一性原理计算的预测相比，与我们的测量结果一致。辐射能提供了直接获得热交换器中的量热能量的途径。
We measure the energy emitted by extensive air showers in the form of radio emission in the frequency range from 30 to 80 MHz. Exploiting the accurate energy scale of the Pierre Auger Observatory, we obtain a radiation energy of 15.8 +/- 0.7 (stat) +/- 6.7 (syst) MeV for cosmic rays with an energy of 1 EeV arriving perpendicularly to a geomagnetic field of 0.24 G, scaling quadratically with the cosmic-ray energy. A comparison with predictions from state-of-the-art first-principles calculations shows agreement with our measurement. The radiation energy provides direct access to the calorimetric energy in the