Study of the highest energy cosmic rays with air fluorescence technique

利用空气荧光技术研究最高能量宇宙线

• 批准号: 11691117
• 负责人: TESHIMA Masahiro
• 金额: $ 10.23万
• 依托单位: The University of Tokyo
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (A)
• 财政年份: 1999
• 资助国家: 日本
• 起止时间: 1999 至 2001
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-11691117/
• 关键词: The highest energy cosmic ray; Cosmic Ray; Air Fluorescence light; High Energy Astrophysics; Gamma ray; Mie Scattering; ミー散乱; 超高エネルギー; ライダー; 宇宙線の起源; GZK cuioff; 宇宙背景輻射; 宇宙物理学; 素粒子; ダークマター

The Air Fluorescence technique is an excellent method to study the highest energy cosmic rays. In this research, we try to clarify the technical problem in air fluorescence technique and made it more reliable. The most important problem is the estimation of the light extinction in the atmosphere. There are extinction processes, Rayleigh Scattering and Mie Scattering. Rayleigh Scattering is due to the molecule in the atmosphere, Mie Scattering is due to the dust particles in the atmosphere. Therefore, the scattering coefficient and angular distribution in Mie Scattering variate in time to time.We summarize this research out as follows.(1) We have studied the UV light extinction in the atmosphere at Akeno observatory using Lidar system.(2) We discovered 10 events which exceed the theoretical cutoff energy(l020eV) by AGASA detector in Akeno observatory.(3) We discovered the existence of the clusters in the arrival direction of the highest energy cosmic rays. This result suggests the existence of point sources of the highest energy cosmic rays.

空气荧光技术是研究最高能量宇宙射线的绝佳方法。在这项研究中，我们试图阐明空气荧光技术中的技术问题，并使其更可靠。最重要的问题是估计大气中的光灭绝。有灭绝过程，瑞利散射和MIE散射。瑞利散射是由于大气中的分子引起的，MIE散射是由于大气中的灰尘颗粒引起的。因此，MIE散射中的散射系数和角度分布会不时变化。我们总结了这项研究。（1）我们研究了使用LiDAR系统的Akeno天文台的大气中的紫外线灭绝。（2）我们发现了10个事件，我们发现了超过理论截止能量（L020EV）的10个事件（L020EV）。最高能量宇宙射线的到达方向的簇。该结果表明存在最高能量宇宙射线的点源。

项目成果

M.Teshima他: "Cluster analysis of extremely high energy cosmic rays in the northern sky"Astro Particle Physics. 13. 151-160 (2000)

M.Teshima 等人：“北方天空中极高能量宇宙射线的星团分析”Astro Particle Chemistry 13. 151-160 (2000)。

M.Teshima他: "Extension of the Cosmic-Ray Energy Spectrum Beyond the Predicted Greisen-Zatsepin-Kuz'min Cutoff"Phys. Rev. Letters. 81. 1163-1166 (1998)

M. Teshima 等人：“超出预测的 Greisen-Zatsepin-Kuzmin 截止范围的宇宙射线能量谱的扩展”Phys Rev. Letters 81. 1163-1166 (1998)

M.Teshima他: "Observations of TeV gamma ray flares from Markarian 501 with the Telescope Array Prototype"AstroPhysical J. Letter. 504-2. 71-74 (1998)

M. Teshima 等人：“用望远镜阵列原型观测 Markarian 501 的 TeV 伽马射线耀斑”AstroPhysical J. Letter 504-74 (1998)。

Extension of the Cosmic-Ray Energy Spectrum Beyond the Predicted Greisen-Zatsepin-Kuz'min Cutoff

• DOI: 10.1103/physrevlett.81.1163
• 发表时间: 1998-07
• 期刊: Physical Review Letters
• 影响因子: 8.6
• 作者: M. Takeda;N. Hayashida;K. Honda;N. Inoue;K. Kadota;F. Kakimoto;K. Kamata;S. Kawaguchi;Y. Kawasaki;N. Kawasumi;H. Kitamura;E. Kusano;Y. Matsubara;K. Murakami;M. Nagano;D. Nishikawa;H. Ohoka;N. Sakaki;M. Sasaki;K. Shinozaki;N. Souma;M. Teshima;R. Torii;I. Tsushima;Y. Uchihori;T. Yamamoto;S. Yoshida;H. Yoshii

Teshima 他52名: "Energy Spectrum of TeV gamma rays from MrK501"Astro Particle Physics. 11. 141-144 (1999)

Teshima 和其他 52 人：“来自 MrK501 的 TeV 伽马射线的能量谱”Astro Particle Chemistry 11. 141-144 (1999)。