Study of High-energy Cosmic Gamma Rays and Cosmic Rays in Tibet.

高能宇宙伽马射线和西藏宇宙线的研究。

基本信息

项目摘要

We study high-energy cosmic gamma rays and cosmic rays with an air shower array (Tibet-II and Tibet-III) in Tibet as a joint research with China. The main research purpose is to study the origin and acceleration mechanism of high-energy cosmic rays by the observation of high-energy primary cosmic-ray energy spectrum and by observation/search of celestial high-energy cosmic gamma-ray point sourcesFrom 1996 to 1999, we set up 80 m^2 emulsion chambers and burst detectors at the center of Tibet-II and studied the energy spectrum of primary cosmic-ray protons in the knee energy region. We obtained the energy spectrum of protons above 10^<15> eV for the first time in the world, by analyzing the emulsion chamber data. The measured energy spectrum showed steepening of the spectral index in the power-law spectrum compared with that below 10^<14> eV, suggesting the acceleration scenario of cosmic rays in the shock wave in a supernova remnant. For this pupose, we developed an automatic analysis device of X-ray films based on a commercial image scanner which enabled us to process X-ray film data. We also did R&D studies of a burst detector array (1000 m^2) for selectively detecting heavy nuclei in the knee energy region, in cooperation with Tibet-III. Four test detectors with a plastic scintillator and optical fibers were setup and in operation in the Tibet-III.We also successfully observed the energy dependence of the apparent anisotropy in multi-TeV galactic cosmic-ray intensitiy due to the terrestrial orbital motion around the Sun for the first time in the world. We obtained a new result on the cosmic-ray anisotropy at the sidereal time frame as well.
作为与中国的联合研究,我们在西藏利用空气簇射阵列(Tibet-II和Tibet-III)研究高能宇宙伽马射线和宇宙线。主要研究目的是通过高能初级宇宙线能谱观测和天体高能宇宙伽马射线点源观测/搜索,研究高能宇宙线的起源和加速机制。1996年至1999年,我们在西藏二号中心架设了80 m^2乳化室和爆发探测器,对初级宇宙线能谱进行了研究。 膝盖能量区域的宇宙射线质子。通过对乳化室数据的分析,我们在国际上首次获得了10^<15>eV以上质子的能谱。测量的能谱显示,与低于10^14eV的谱指数相比,幂律谱中的谱指数变陡,这表明超新星遗迹中的冲击波中宇宙射线的加速情况。为此,我们开发了一种基于商用图像扫描仪的X射线胶片自动分析装置,使我们能够处理X射线胶片数据。我们还与Tibet-III合作进行了用于选择性检测膝能量区重核的爆发探测器阵列(1000 m^2)的研发研究。在西藏三号上安装并运行了四个带有塑料闪烁体和光纤的测试探测器。我们还在世界上首次成功观测到了由于地球绕日轨道运动引起的多TeV星系宇宙线强度表观各向异性的能量依赖性。我们还获得了恒星时间范围内宇宙射线各向异性的新结果。

项目成果

期刊论文数量(41)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
M.Amenomori et al.: "Observation of multi-TeV diffuse gamma rays from the Galactic plane with the Tibet air shower array"The Astrophysical Journal. 580・2. 887-895 (2002)
M. Amenomori 等人:“利用西藏空气簇射阵列观测银河平面的多 TeV 扩散伽马射线”《天体物理学杂志》580・2(2002 年)。
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Automatic analysis of the emulsion chamber using the image scanner applied to the Tibet hybrid experiment
Primary proton spectrum around the knee deduced from the emulsion-chamber data obtained at Mts. Fuji and Kanbala
  • DOI:
    10.1016/s0927-6505(02)00182-2
  • 发表时间:
    2003-03
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  • 影响因子:
    3.5
  • 作者:
    J. Huang;N. Hotta;K. Kasahara;I. Ohta;S. Ozawa;T. Saito;M. Shibata;X. W. Xu;T. Yuda
  • 通讯作者:
    J. Huang;N. Hotta;K. Kasahara;I. Ohta;S. Ozawa;T. Saito;M. Shibata;X. W. Xu;T. Yuda
Galactic anisotropy of 10 TeV cosmic-ray intensity observed by the Tibet air shower array
西藏空气簇射阵列观测到的10 TeV宇宙线强度的星系各向异性
M.Amenomori et al.: "Primary proton spectrum in the knee observed with the Tibet hybrid experiment"Proceedings of the 28th International Cosmic Ray Conference, Tsukuba, 2003. 1・1. 107-110 (2003)
M. Amenomori 等人:“通过西藏混合实验观察到的膝盖中的初级质子光谱”第 28 届国际宇宙射线会议记录,筑波,2003 年。1・1(2003 年)。
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YUDA Toshinori其他文献

YUDA Toshinori的其他文献

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{{ truncateString('YUDA Toshinori', 18)}}的其他基金

Systematic study of high-energy celestial phenomena in Tibet
西藏高能天象系统研究
  • 批准号:
    20403005
  • 财政年份:
    2008
  • 资助金额:
    $ 9.34万
  • 项目类别:
    Grant-in-Aid for Scientific Research (B)
Development of high-energy particle astrophysics in Tibet
西藏高能粒子天体物理发展
  • 批准号:
    17403004
  • 财政年份:
    2005
  • 资助金额:
    $ 9.34万
  • 项目类别:
    Grant-in-Aid for Scientific Research (B)
Systematic study of high energy cosmic-ray sources
高能宇宙射线源的系统研究
  • 批准号:
    11203101
  • 财政年份:
    1999
  • 资助金额:
    $ 9.34万
  • 项目类别:
    Grant-in-Aid for Scientific Research on Priority Areas
Study of High Energy Cosmic Particles in Tibet
西藏高能宇宙粒子研究
  • 批准号:
    10044063
  • 财政年份:
    1998
  • 资助金额:
    $ 9.34万
  • 项目类别:
    Grant-in-Aid for Scientific Research (A).
Study of High Energy Cosmic Rays in the Tibetan Highlands
青藏高原高能宇宙线研究
  • 批准号:
    07044064
  • 财政年份:
    1995
  • 资助金额:
    $ 9.34万
  • 项目类别:
    Grant-in-Aid for international Scientific Research
Study of Ultra-High Energy Cosmic Rays at Tibetan highlands
青藏高原超高能宇宙线研究
  • 批准号:
    04044042
  • 财政年份:
    1992
  • 资助金额:
    $ 9.34万
  • 项目类别:
    Grant-in-Aid for international Scientific Research
Study of ultra-high energy cosmic rays at Tibetan highlands.
青藏高原超高能宇宙线研究.
  • 批准号:
    03044035
  • 财政年份:
    1991
  • 资助金额:
    $ 9.34万
  • 项目类别:
    Grant-in-Aid for international Scientific Research
Study of Ultra-high Energy Cosmic Rays at Tibetan Highlands
青藏高原超高能宇宙线研究
  • 批准号:
    01044039
  • 财政年份:
    1989
  • 资助金额:
    $ 9.34万
  • 项目类别:
    Grant-in-Aid for international Scientific Research

相似海外基金

Study of Performance Improvement for Air Shower Array with Surface Water Cherenkov Detectors
地表水切伦科夫探测器风淋阵性能改进研究
  • 批准号:
    15K05108
  • 财政年份:
    2015
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    $ 9.34万
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Study on cosmic-ray acceleration and high-energy gamma-ray sources using the Tibet air shower array
利用西藏空气簇射阵进行宇宙线加速和高能伽马射线源研究
  • 批准号:
    26800124
  • 财政年份:
    2014
  • 资助金额:
    $ 9.34万
  • 项目类别:
    Grant-in-Aid for Young Scientists (B)
Developement of Water Cherenkov Detector for the Giant Air Shower Array(Pierre Auger Project)
巨型空气簇射阵列水切伦科夫探测器的研制(Pierre Auger项目)
  • 批准号:
    08454061
  • 财政年份:
    1996
  • 资助金额:
    $ 9.34万
  • 项目类别:
    Grant-in-Aid for Scientific Research (B)
Chicago Air Shower Array
芝加哥风淋室阵列
  • 批准号:
    9322583
  • 财政年份:
    1994
  • 资助金额:
    $ 9.34万
  • 项目类别:
    Continuing Grant
Total flux of Cosmic Rays around knee region using Tibet Air Shower Array
使用西藏空气淋浴阵列计算膝部周围宇宙射线的总通量
  • 批准号:
    06640374
  • 财政年份:
    1994
  • 资助金额:
    $ 9.34万
  • 项目类别:
    Grant-in-Aid for General Scientific Research (C)
Chicago Air Shower Array (Physics)
芝加哥空气淋浴阵列(物理)
  • 批准号:
    9021971
  • 财政年份:
    1991
  • 资助金额:
    $ 9.34万
  • 项目类别:
    Continuing Grant
Development of an air shower array for accurate determination of the arrival direction of cosmic rays in the 10^<15>eV region.
开发用于精确确定10 15 eV区域宇宙射线到达方向的空气喷淋阵列。
  • 批准号:
    61460016
  • 财政年份:
    1986
  • 资助金额:
    $ 9.34万
  • 项目类别:
    Grant-in-Aid for General Scientific Research (B)
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