2011 Fiscal Year Final Research Report
Study for the molecular bremsstrahlung from extensive air showers
| Project/Area Number |
21654036
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Single-year Grants |
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| Research Field |
Particle/Nuclear/Cosmic ray/Astro physics
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| Research Institution | Osaka City University |
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Principal Investigator |
OGIO Shoichi 大阪市立大学, 大学院・理学研究科, 准教授 (20242258)
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| Research Collaborator |
YAMAMOTO Tokonatsu 甲南大学, 理工学部, 准教授
KURAMOTO Kazuyuki 大阪市立大学, 大学院・理学研究科, 博士
IIJIMA Takashi 甲南大学, 理工学部, 修士
FUJII Toshihiro 大阪市立大学, 大学院・理学研究科, 博士
SAKURAI Nobuyuki 大阪市立大学, 大学院・理学研究科, 特任助教
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| Project Period (FY) |
2009 – 2011
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| Keywords | 空気シャワー / 分子制動放射 / 最高エネルギー宇宙線 |
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| Research Abstract |
This is a basic research for the molecular bremsstrahlung from extensive air showers induced by high energy cosmic rays. This technique can be expected to provide a new detection method for cosmic rays with a good angular and energy resolutions and also with 100% of running time efficiency. We developed two sets of radio telescopes in Osaka and in Utah, USA. In Osaka, we were coincidentally operating two Ku band radio telescopes with an air shower array, and detected radio signals coincidently with air showers. But the observed event rate is smaller than a theoretical expectation. In Utah, we installed two telescopes that operated coincidentally with an electron linear accelerator. We did not detect any radio signals from accelerated electron beams.
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