Study of Cosmic Rays Based on the Temporal Variability of Emissions from Astronomical Objects
| Project/Area Number |
25400227
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Astronomy
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| Research Institution | The University of Tokyo |
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Principal Investigator |
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| Project Period (FY) |
2013-04-01 – 2016-03-31
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| Project Status |
Completed (Fiscal Year 2015)
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| Budget Amount *help |
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2015: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2014: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2013: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
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| Keywords | 宇宙線加速 / ガンマ線 / ガンマ線バースト / 活動銀河核 / 相対論的ジェット / 粒子加速 / 乱流 / 活動銀河核ジェット / 突発天体 / 最高エネルギー宇宙線 / 高エネルギーニュートリノ / X線・ガンマ線 |
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| Outline of Final Research Achievements |
The particle acceleration and succeeding X/gamma-ray emission mechanisms in high-energy astronomical objects have not been revealed yet. In order to establish a new picture beyond the previous simple models, we develop numerical simulation codes that can follow the temporal evolutions of particle acceleration, injection, and emissions. We propose a slow acceleration process due to turbulence rather than shock wave, which has been mostly considered as the acceleration site. Our models succeed in reproducing the emissions from jets launched from active galactic nuclei, and gamma-ray bursts, and so on. Our results propose a new picture for high-energy astrophysical objects. For the turbulence acceleration, the time-dependence is essential to reproduce the observations, so that our unique method is a powerful tool to investigate the particle acceleration and emissions.
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Report
(4 results)
Research Products
(46 results)
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[Presentation] Radiation Processes in GRBs2015
Author(s)
Katsuaki Asano
Organizer
Jets and Winds in Pulsar Wind Nebulae, Gamma-ray Bursts and Blazars: Physics of Extreme Energy Release
Place of Presentation
International Space Science Institute, Bern, Switzerland
Year and Date
2015-11-16
Related Report
Int'l Joint Research / Invited
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[Presentation] ガンマ線バーストでの乱流加速2014
Author(s)
浅野勝晃、寺澤敏夫
Organizer
高エネルギー宇宙物理学研究会2014
Place of Presentation
九州大学西新プラザ（福岡県福岡市）
Year and Date
2014-11-23 – 2014-11-25
Related Report
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[Presentation] 宇宙における粒子加速素過程について2014
Author(s)
寺澤敏夫、浅野勝晃
Organizer
CRC タウンミーティング2014 （第1回）
Place of Presentation
名古屋大学（愛知県名古屋市）
Year and Date
2014-07-12 – 2014-07-13
Related Report
Invited
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