Energy spectrum of cosmic-ray electrons at TeV energies.
Energy spectrum of cosmic-ray electrons at TeV energies.
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DOI：
10.1103/physrevlett.101.261104
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发表时间：
2008-11
影响因子：
8.6
通讯作者：
F. Aharonian;A. Akhperjanian;U. Barres de Almeida;A. R. Bazer-Bachi;Y. Becherini;B. Behera;W. Benbow-W.-Ben
中科院分区：
文献类型：
--
作者：
F. Aharonian;A. Akhperjanian;U. Barres de Almeida;A. R. Bazer-Bachi;Y. Becherini;B. Behera;W. Benbow-W.-Ben
地面伽马射线望远镜的收集面积非常大，这使它们在探测极高能（>600 GeV）宇宙射线电子方面比气球或卫星仪器具有很大的优势。在这里，我们提出的电子光谱来自数据与高能立体系统（H.E.S.S.）。大气切伦科夫望远镜的成像。在这种测量中，这是第一次，我们能够将电子光谱的测量扩展到直接测量的范围之外。我们发现的证据，在600 GeV以上的能量谱大幅陡峭相比，较低的能量。
The very large collection area of ground-based gamma-ray telescopes gives them a substantial advantage over balloon or satellite based instruments in the detection of very-high-energy (>600 GeV) cosmic-ray electrons. Here we present the electron spectrum derived from data taken with the High Energy Stereoscopic System (H.E.S.S.) of imaging atmospheric Cherenkov telescopes. In this measurement, the first of this type, we are able to extend the measurement of the electron spectrum beyond the range accessible to direct measurements. We find evidence for a substantial steepening in the energy spectrum above 600 GeV compared to lower energies.