Development of high-energy particle astrophysics in Tibet

西藏高能粒子天体物理发展

• 批准号: 17403004
• 负责人: YUDA Toshinori
• 金额: $ 9.54万
• 依托单位: Kanagawa University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2005
• 资助国家: 日本
• 起止时间: 2005 至 2007
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-17403004/
• 关键词: Tibet; air-shower array; high energy gamma-ray; high-energy cosmic-ray; knee region; sun shadow; International Collaboration; China; ガンマ線天体; 国際研究者交流; 活動的天体; 宇宙線; 粒子線天体物理

The present air-shower array at Yangbajing in Tibet was completed in the late fall of 2003 and has then been successively operating to date. The array(Tibet-III) consists of about 800 scintillation counters, which are deployed at a grid of 7.5m spacing covering the area of 37000m^2. The trigger rate of air-shower events is set to about 1.7kHz and the arrival direction of each event can be estimated with an inaccuracy of less than 0.9 degrees in the energy region over 3 TeV. The main objectives are to search for high-energy gamma rays from active celestial objects and to study very high energy Galactic cosmic rays. These observations are very important to clarify the origin of cosmic rays and their acceleration mechanism.The main results obtained until now are as follows.1) The energy spectrum of all-particle cosmic rays has been observed in the wide energy range from 10^<14> to 10^<17> eV with a sharp knee at the energy around 4x1015 eV.2) The energy spectra of primary protons and heli … More ums are for the first time observed in the knee energy region.3) High energy gamma rays above about 3 TeV have been successfully observed from the Crab Nebula and active galactic nuclei such as Mrk421 and Mrk501. A long-term correlation between RV gamma-ray s and X-ray flares from XMM Newton satellite was observed to provide information about electron acceleration at the source.4) An energy dependence of the large-scale anisotropy of the Galactic cosmic rays has been for the first time observed and also significant anisotropy of multi-TeV cosmic rays is observed in the direction of Cygnus region.5) A variation of the sun shadow during the solar activity cycles was successively monitored with the air shower array, and we succeeded to get new information about the solar magnetic field.Last year we constructed a 100m^2 water-Cherenkov-type muon detector in the underground of the Tibet air shower array. The total area of muon detectors will be expanded up to about 10000m^2 in the very near future. This instrument with a wide field of view then becomes the most sensitive? gamma-ray detector at energies above several times 10 TeV in the world. It is expected that this experiment enables us to provide very important results on the acceleration of high energy cosmic rays, which is still unresolved. Less

西藏羊八井现有的空气簇射阵列于2003年秋末建成，至今已成功运行。该阵列（Tibet-III）由约800个闪烁计数器组成，分布在7.5m的网格中。空间覆盖面积为37000m^2，空气阵雨事件的触发频率设置为1.7kHz左右，每个事件的到达方向可以通过在超过 3 TeV 的能量区域中误差小于 0.9 度，主要目标是寻找来自活动天体的高能伽马射线并研究极高能量的银河宇宙射线。这些观测对于澄清银河系宇宙射线的起源非常重要。宇宙线及其加速机制。目前取得的主要成果如下：1）在宽能量范围内观测到了全粒子宇宙线的能谱。 10^<14> 到 10^<17> eV，在 4x1015 eV 左右的能量处有一个尖锐的拐点。2) 首次在拐点能量区域观察到初级质子和螺旋的能谱。3)已经成功地从蟹状星云和Mrk421和Mrk501等活跃星系核中观测到了约3 TeV以上的高能伽马射线。观察到 RV 伽马射线和 XMM 牛顿卫星的 X 射线耀斑之间的关系，以提供有关源处电子加速的信息。4）首次观察到银河宇宙射线大尺度各向异性的能量依赖性在天鹅座区域方向也观测到了显着的多TeV宇宙线各向异性。 5）利用风淋室阵列成功监测了太阳活动周期中太阳阴影的变化，并成功监测到太阳活动周期中太阳阴影的变化。以获得有关太阳磁场的新信息。去年我们在西藏空气簇射阵地下建造了一个100m^2的水切伦科夫型μ子探测器，μ子探测器的总面积将扩大到约10000m。 ^2 在不久的将来，这种具有宽视场的仪器将成为世界上能量高于 10 TeV 数倍的最灵敏的伽马射线探测器。预计该实验使我们能够提供非常重要的信息。高能宇宙射线加速的结果仍然悬而未决。

项目成果

Variations of sun shadow in the solar cycle 23 observed with the Tibet air shower array

西藏风淋室观测第23个太阳周期太阳影子的变化

• 发表时间: 2006
• 作者: M.Amenomori et al.

「研究成果報告書概要(和文)」より

摘自《研究结果报告概要（日语）》

Towards gamma-ray astronomy with timing arrays

利用定时阵列迈向伽马射线天文学

• DOI: 10.1088/1742-6596/632/1/012042
• 发表时间: 2015-08-13
• 期刊: Journal of Physics: Conference Series
• 作者: M. Tluczykont;I. Astapov;N. Barbashina;S. Beregnev;A. Bogdanov;D. Bogorodskii;V. Boreyko;M. Brückner;N. Budnev;A. Chiavassa;O. Chvalaev;A. Dyachok;S. Epimakhov;T. Eremin;A. Gafarov;N. Gorbunov;V. Grebenyuk;O. Gress;T. Gress;A. Grinyuk;O. Grishin;D. Horns;A. Ivanova;N. Karpov;N. Kalmykov;Y. Kazarina;V. Kindin;N. Kirichkov;S. Kiryuhin;R. Kokoulin;K. Kompaniets;E. Konstantinov;A. Korobchenko;E. Korosteleva;V. Kozhin;M. Kunnas;L. Kuzmichev;V. Lenok;B. Lubs;orzhiev;orzhiev;N. Lubs;orzhiev;orzhiev;R. Mirgazov;R. Mirzoyan;R. Monkhoev;R. Nachtigall;A. Pakhorukov;M. Panasyuk;L. Pankov;A. Perevalov;A. Petrukhin;V. Platonov;V. Poleschuk;M. Popescu;E. Popova;A. Porelli;S. Porokhovoy;V. Prosin;V. Ptuskin;V. Romanov;G. Rubtsov;M. Rueger;E. Rybov;V. Samoliga;P. Satunin;A. Saunkin;V. Savinov;Y. Semeney;B. Shaibonov;A. Silaev;A. Skurikhin;M. Slunečka;C. Spiering;L. Sveshnikova;V. Tabolenko;A. Tkachenko;L. Tkachev;A. Veslopopov;E. P. Veslopopova;D. Voronov;R. Wischnewski;I. Yashin;K. Yurin;A. Zagorodnikov;V. Zirakashvili;V. Zurbanov
• 通讯作者: V. Zurbanov

Gamma-ray observation with the Tibet air shower experiment

西藏空气簇射实验的伽马射线观测

• 发表时间: 2007
• 作者: M. Ohnishi

Are protons still dominant at the knee of cosmic-ray energy spectrum?

质子在宇宙射线能谱的拐点仍然占主导地位吗？

• 发表时间: 2006
• 作者: M.Amenomori et al.