arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 1706.01451astro-ph.IMastro-ph.HE
收藏

利用广泛空气簇射的射电辐射标定大尺度cosmic-ray探测器绝对能量的新方法

A novel method for the absolute energy calibration of large-scale cosmic-ray detectors using radio emission of extensive air showers

Christian Glaser

摘要:

超高能宇宙射线撞击大气层会产生大量次级粒子。对这些空气簇射以无线电波形式辐射的能量进行测量,能够精确地测量宇宙射线能量。与成熟的荧光技术相比,无线电测量对大气条件的依赖性较小,因此可能会显着降低宇宙射线能量测量的系统不确定性。大气对兆赫无线电波是透明的,无线电辐射可以用经典电动力学的第一性原理计算,这是两个吸引人的方面。这种方法将讨论的工程无线电阵列(AERA)的皮埃尔俄歇宇宙射线天文台。AERA在30 - 80 MHz频带内探测能量超过$10^{17}~$ eV的大范围空气簇射的无线电发射,由150多个自主无线电台组成,覆盖面积约为17 $~$ km $^2$。它与俄歇低能量探测器扩展位于同一地点,能够与各种其他测量技术相结合。

英文摘要:

Ultra-high energy cosmic rays impinging onto the atmosphere induce huge cascades of secondary particles. The measurement of the energy radiated by these air showers in form of radio waves enables an accurate measurement of the cosmic-ray energy. Compared to the well-established fluorescence technique, the radio measurements are less dependent on atmospheric conditions and thus potentially reduce the systematic uncertainty in the cosmic-ray energy measurement significantly. Two attractive aspects are that the atmosphere is transparent to MHz radio waves and the radio emission can be calculated from first-principles using classical electrodynamics. This method will be discussed for the Engineering Radio Array (AERA) of the Pierre Auger Cosmic-Ray Observatory. AERA detects radio emission from extensive air showers with energies beyond $10^{17}~$eV in the 30 - 80 MHz frequency band and consists of more than 150 autonomous radio stations covering an area of about 17$~$km$^2$. It is located at the same site as the Auger low-energy detector extensions enabling combinations with various other measurement techniques.

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。

↑