2012 Fiscal Year Final Research Report
Study of Ultra-High-Energy Physical Processes Associated with Large-Scale Structure Formation in the Universe
Project/Area Number |
22540278
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Research Category |
Grant-in-Aid for Scientific Research (C)
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Allocation Type | Single-year Grants |
Section | 一般 |
Research Field |
Particle/Nuclear/Cosmic ray/Astro physics
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Research Institution | The University of Tokyo (2011-2012) Kyoto University (2010) |
Principal Investigator |
INOUE Susumu 東京大学, 宇宙線研究所, 協力研究員 (80413954)
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Project Period (FY) |
2010 – 2012
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Keywords | 宇宙線 / 宇宙大規模構造 / 銀河団 / ガンマ線 / X 線 |
Research Abstract |
Large-scale structures in the Universe such as galaxies and clusters of galaxies are thought to have formed through successive merging events driven by gravity, which are likely accompanied by formation of shock waves that can naturally accelerate particles to high energies and generate gamma-rays. Such phenomena may possibly be the origin of the mysterious ultra-high-energy cosmic rays or unidentified gamma-ray source. We have undertaken theoretical investigations of such physical processes, and also attempted to test them with current X-ray and gamma-ray observations, obtaining results that support at least some of the relevant predictions. Future observations with higher precision should provide a deeper understanding of particle acceleration phenomena on the largest scales in the Universe.
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Research Products
(54 results)
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[Journal Article] X-ray and Radio Follow-up Observations of High-Redshift Blazar Candidates in the Fermi-LAT Unassociated Source Population2013
Author(s)
Takahashi, Y., Kataoka, J., Niinuma, K., Honma, M., Inoue, Y., Totani, T., Nakamori, T., Maeda, K., Inoue, S
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Journal Title
Astrophys. J
Volume: (in press)
URL
Peer Reviewed
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[Journal Article] Suzaku X-Ray Observations of the Accreting NGC 4839 Group of Galaxies and the Radio Relic in the Coma Cluster2013
Author(s)
Akamatsu, H., Inoue, S., Sato, T., Matsushita, K., Ishisaki, Y., Sarazin, C. L.
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Journal Title
Pub. Astron. Soc. J
Volume: (in press)
URL
Peer Reviewed
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[Journal Article] Extragalactic Background Light from "Hierarchical Galaxy Formation: Gamma-Ray Attenuation up to the Epoch of Cosmic2013
Author(s)
Inoue, Y., Inoue, S., Kobayashi, M. A. R., Makiya, R., Niino, Y., Totani, T
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Journal Title
Reionization and the First Stars"Astrophys. J
Volume: 768
Pages: 197
DOI
Peer Reviewed
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[Journal Article] Potential of EBL and Cosmology Studies by theCherenkov Telescope Array2013
Author(s)
Mazin, D., Raue, M., Behera, B., Inoue, S., Inoue, Y., Nakamori, T., Totani, T.
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Journal Title
Astropart. Phys.
Volume: 43
Pages: 241-251
DOI
Peer Reviewed
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[Journal Article] Prospects for Detecting Gamma-Ray Bursts at Very High Energies with the Cherenkov Telescope Array2012
Author(s)
Kakuwa, J., Murase, K., Toma, K., Inoue, S., Yamazaki, R., Ioka, K
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Journal Title
M. N. R. A. S.
Volume: 425
Pages: 514-526
DOI
Peer Reviewed
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[Journal Article] Searching for the Most Distant Gamma-Ray Blazars with the Fermi Gamma-Ray Space Telescope2011
Author(s)
Inoue, Y., Inoue, S., Kobayashi, M. K., Totani, T., Kataoka, J. & Sato, R.
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Journal Title
M. N. R. A. S.
Volume: 411
Pages: 464-468
DOI
Peer Reviewed
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