2010 Fiscal Year Final Research Report
Theoretical Research on the Origin of Gamma Ray Bursts
| Project Area | Deciphering the Ancient Universe with Gamma-Ray Bursts |
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| Project/Area Number |
19047004
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| Research Category |
Grant-in-Aid for Scientific Research on Priority Areas
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| Allocation Type | Single-year Grants |
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| Review Section |
Science and Engineering
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| Research Institution | Kyoto University |
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Principal Investigator |
NAKAMURA Takashi Kyoto University, 大学院・理学研究科, 教授 (80155837)
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| Co-Investigator(Kenkyū-buntansha) |
NOMOTO Kennichi 東京大学, 数物連携宇宙研究機構, 特任教授 (90110676)
NAGATAKI Shigehiro 京都大学, 基礎物理学研究所, 准教授 (60359643)
OMUKAI Kazuyuki 京都大学, 大学院・理学研究科, 准教授 (70390622)
IOKA Kunihito 高エネルギー加速器研究機構, 素粒子原子核研究所, 准教授 (80402759)
YAMAZAKI Ryo 青山学院大学, 理学研究科, 准教授 (40420509)
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| Project Period (FY) |
2007 – 2010
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| Keywords | ガンマ線バースト / 初代星の形成 / 超新星爆発 / ジェット / 残光 / 距離指標 |
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| Research Abstract |
Adopting either (1)Gamma Ray Bursts (GRB) as a distance indicator, (2)Progenitor and host galaxy of GRB, (3) Supernova associated with GRB, (4)Emergence and propagation of jets, or (5)Radiation mechanism of prompt emission and afterglow of GRB etc as a research theme of each member, we performed the cooperative research program on GRB using TV conference system to communicate each other frequently. As a result, we succeeded in (1)simulating the formation of the first stars without metal and evolving them up to be seen as GRBs. (2)We also reanalyzed Yonetoku relation as a distance indicator to the first GRB and found that Yonetoku relation is a good distance indicator if we restrict only data within 10% errors and define the luminosity in the rest frame of GRBs. Besides these researches , big progress in (3)the origin of Yonetoku relation (4)the origin of the shallow decay phase of GRBs (5) relativistic MHD numerical simulations to clarify the origin of energy of GRBs etc. has been made.
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[Presentation] Gamma Ray Cosmology Project2010
Author(s)
Ryo Tsutsui Takashi Nakamura, Daisuke Yonetoku, Toshio Murakami, Keitaro Takahashi
Organizer
The Essential Cosmology for the Next Generation
Place of Presentation
Playa del Carmen Mexico
Year and Date
20100100
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