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 1111.2507astro-ph.HE
收藏

望远镜阵列的亮点

Highlights from Telescope Array

Yoshiki Tsunesada

摘要:

本文回顾了望远镜阵头三年的观测结果。讨论了超高能宇宙射线的能谱、质量组成和到达方向的各向异性。利用荧光探测器、表面探测器的数据以及利用这两种数据的混合簇射重建技术,确定了能量在$10^{18}$ eV以上的宇宙射线的能谱。踝结构在$10^{18.7}$ eV处清晰可见。第二个弯曲点也被确定,在那里宇宙射线的通量开始减少,光谱指数从$E^{-2.68}$到$E^{-4.2}$的变化。使用荧光探测器数据对簇射发展的研究表明,质子在$10^{18.2}$ eV以上的宇宙射线中占主导地位。在宇宙射线的到达方向上没有发现明显的各向异性。我还提出了进一步的实验扩展正在开发的望远镜阵列网站。

英文摘要:

The results from the first three years observation in Telescope Array are reviewed. The energy spectrum, mass composition, and anisotropy in arrival directions of ultra-high energy cosmic rays are discussed. The energy spectrum of cosmic rays with energies above $10^{18}$ eV is determined using the data of the fluorescence detectors, surface detectors, and with a hybrid shower reconstruction technique using the both data. The ankle structure is clearly found at $10^{18.7}$ eV. The second bending point is also identified, at which the flux of cosmic rays begins to decrease and the spectral index changes from $E^{-2.68}$ to $E^{-4.2}$. The study of shower development using the fluorescence detector data shows that proton is dominant in cosmic rays above $10^{18.2}$ eV. No apparent anisotropies in the arrival direction of cosmic rays are found. I also present further experimental extensions which are being developed at the Telescope Array site.

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。

↑