I
I. Ohta
Researcher at Utsunomiya University
Publications - 78
Citations - 1696
I. Ohta is an academic researcher from Utsunomiya University. The author has contributed to research in topics: Air shower & Cosmic ray. The author has an hindex of 19, co-authored 77 publications receiving 1616 citations.
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Journal ArticleDOI
Anisotropy and corotation of galactic cosmic rays.
M. Amenomori,S. Ayabe,X. J. Bi,D. Chen,Shuwang Cui,Danzengluobu,Liming Ding,X. H. Ding,Cunfeng Feng,Zhaoyang Feng,Zhenyong Feng,X. Y. Gao,Q. X. Geng,H. W. Guo,H. H. He,M. He,K. Hibino,N. Hotta,Haibing Hu,Hailan Hu,Jing Huang,Q. Huang,H. Y. Jia,F. Kajino,Katsuaki Kasahara,Y. Katayose,Chihiro Kato,Kazumasa Kawata,Labaciren,G. M. Le,A. F. Li,J. Y. Li,Y. Q. Lou,Hong-peng Lu,S. L. Lu,X. R. Meng,K. Mizutani,K. Mizutani,J. Mu,Kazuoki Munakata,A. Nagai,H. Nanjo,Masaki Nishizawa,M. Ohnishi,I. Ohta,H. Onuma,T. Ouchi,Shunsuke Ozawa,Jieru Ren,To. Saito,Takashi Saito,M. Sakata,Takashi Sako,T. Sasaki,M. Shibata,A. Shiomi,T. Shirai,H. Sugimoto,Masato Takita,Y. H. Tan,N. Tateyama,Shoji Torii,Harufumi Tsuchiya,S. Udo,B. Wang,H. Wang,X. Wang,Y. G. Wang,Hong Wu,L. Xue,Y. Yamamoto,C. T. Yan,X. C. Yang,S. Yasue,Z. H. Ye,G. C. Yu,A. F. Yuan,T. Yuda,H. M. Zhang,J. L. Zhang,Ning Zhang,Xuan Zhang,Y. Zhang,Yi Zhang,Zhaxisangzhu,X. X. Zhou +85 more
TL;DR: Two-dimensional high-precision anisotropy measurement for energies from a few to several hundred teraelectronvolts (TeV) is presented, using the large data sample of the Tibet Air Shower Arrays, revealing finer details of the known anisotropies.
Journal ArticleDOI
The All-Particle Spectrum of Primary Cosmic Rays in the Wide Energy Range from 1014 to 1017 eV Observed with the Tibet-III Air-Shower Array
M. Amenomori,X. J. Bi,D. Chen,Shuwang Cui,Danzengluobu,Liming Ding,X. H. Ding,C. Fan,Cunfeng Feng,Zhaoyang Feng,Zhenyong Feng,X. Y. Gao,Q. X. Geng,H. W. Guo,H. H. He,M. He,K. Hibino,N. Hotta,Haibing Hu,Hailan Hu,Jing Huang,Q. Huang,H. Y. Jia,F. Kajino,K. Kasahara,Y. Katayose,Chihiro Kato,Kazumasa Kawata,Labaciren,G. M. Le,A. F. Li,J. Y. Li,Y. Q. Lou,Hong-peng Lu,S. L. Lu,X. R. Meng,K. Mizutani,K. Mizutani,J. Mu,Kazuoki Munakata,A. Nagai,H. Nanjo,Masaki Nishizawa,M. Ohnishi,I. Ohta,H. Onuma,T. Ouchi,Shunsuke Ozawa,Jieru Ren,To. Saito,Takashi Saito,M. Sakata,Takashi Sako,M. Shibata,A. Shiomi,A. Shiomi,T. Shirai,H. Sugimoto,Masato Takita,Y. H. Tan,N. Tateyama,Shoji Torii,Harufumi Tsuchiya,S. Udo,B. Wang,H. Wang,X. Wang,Yu-Sa Wang,Y. G. Wang,Hong Wu,L. Xue,Y. Yamamoto,C. T. Yan,X. C. Yang,S. Yasue,Z. H. Ye,G. C. Yu,A. F. Yuan,T. Yuda,H. M. Zhang,Jia Zhang,Ning Zhang,Xuan Zhang,Y. Zhang,Yi Zhang,Zhaxisangzhu,X. X. Zhou +86 more
TL;DR: In this paper, the authors presented an updated all-particle energy spectrum of primary cosmic rays in a wide range from 10 14 to 10 17 eVusing 5:5 ; 10 7 events collected from 2000 November through 2004 October by the Tibet-III air-shower array located 4300 m in altitude.
Journal ArticleDOI
Three-dimensional development of cascade showers induced by 50-, 100-, and 300-GeV electrons
N. Hotta,H. Munakata,M. Sakata,Y. Yamamoto,Shoji Dake,Hiroshi Ito,M. Miyanishi,Katsuaki Kasahara,T. Yuda,K. Mizutani,I. Ohta +10 more
TL;DR: In this article, five emulsion chambers were analyzed with two different dilution factors exposed to the 50-, 100-, and 300-GeV electron beams at Fermi National Accelerator Laboratory.
Journal ArticleDOI
Emulsion chamber observations of primary cosmic-ray electrons in the energy range 30-1000 GeV
J. Nishimura,Michiko S. Fujii,T. Taira,E. Aizu,H. Hiraiwa,Tadashi Kobayashi,K. Niu,I. Ohta,R. L. Golden,T. A. Koss +9 more
TL;DR: In this article, the results of a series of emulsion exposures, beginning in Japan in 1968 and continued in the U.S. since 1975, which have yielded a total balloon-altitude exposure of 98,700 sq m sr s, are presented.
Journal ArticleDOI
Are protons still dominant at the knee of the cosmic-ray energy spectrum?
M. Amenomori,S. Ayabe,D. Chen,S. W. Cui,Danzengluobu,L. K. Ding,X. H. Ding,Cunfeng Feng,Z. Y. Feng,X. Y. Gao,Q. X. Geng,H. W. Guo,H. H. He,M. He,K. Hibino,N. Hotta,Haibing Hu,H. B. Hu,Jing Huang,Q. Huang,H. Y. Jia,F. Kajino,Katsuaki Kasahara,Y. Katayose,Chihiro Kato,Kazumasa Kawata,Labaciren,G. M. Le,J. Y. Li,Hsiao-Chi Lu,S. L. Lu,X. R. Meng,K. Mizutani,J. Mu,Kazuoki Munakata,A. Nagai,H. Nanjo,Masaki Nishizawa,M. Ohnishi,I. Ohta,H. Onuma,T. Ouchi,Shunsuke Ozawa,Jieru Ren,Takeshi Saito,M. Sakata,T. Sasaki,M. Shibata,A. Shiomi,T. Shirai,H. Sugimoto,Masato Takita,Y. H. Tan,N. Tateyama,Shoji Torii,Harufumi Tsuchiya,S. Udo,Huaguang Wang,X. Wang,Y. G. Wang,H. R. Wu,L. Xue,Y. Yamamoto,C. T. Yan,X. C. Yang,S. Yasue,Z. H. Ye,G. C. Yu,A. F. Yuan,T. Yuda,H. M. Zhang,Jia Zhang,N. J. Zhang,Xuan Zhang,Y. Zhang,Yi Zhang,Zhaxisangzhu,X. X. Zhou +77 more
TL;DR: In this article, a hybrid experiment consisting of emulsion chambers, burst detectors and the Tibet-II air-shower array was carried out at Yangbajing (4300 m a.s.l., 606 g / cm 2 ) in Tibet to obtain the energy spectra of primary protons and heliums.