Unveiling Emission Mechanism of Gamma-Ray Bursts from the Central Engine

揭示中央发动机伽马射线暴的发射机制

• 批准号: 23340069
• 负责人: NAGATAKI Shigehiro
• 金额: $ 12.15万
• 依托单位: Institute of Physical and Chemical Research (2013)Kyoto University (2011-2012)
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2011
• 资助国家: 日本
• 起止时间: 2011-04-01 至 2014-03-31
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-23340069/
• 关键词: ガンマ線バースト; ガンマ線放射輸送; 磁気流体; ニュートリノ; 一般相対論; ブラックホール; マグネター; 宇宙定数; 相対論的ジェット; 超新星爆発; 輻射輸送; 元素合成; 重力波; 磁気流体力学; 高密度状態方程式; 一般相対性理論

For this project, we have developed our General Relativistic MHD code and applied it for numerical simulations of formation of Gamma-Ray Burst (GRB) jets. We found that more rapidly rotating black holes can drive stronger GRB jets. Up to now, only two groups in the world have succeeded to perform such simulations. We also did numerical simulations on propagation of relativistic GRB-Jets. We succeeded to explain the phenominological relation between Luminosity and Energy of Gamma-rays in GRBs by estimating the photospheric emission from the photosphere of GRB jets. Further, we did Monte-Carlo simulations for propagation of gamma-rays in GRB-jets. We succeeded to explain the typical spectrum of GRBs as well as large polarization that was observed recently by a Japanese satellite, IKAROS.

对于这个项目，我们开发了一般的相对论MHD代码，并将其应用于形成伽马射线爆发（GRB）喷气机的数值模拟。我们发现，更快旋转的黑洞可以驱动更强的GRB喷气机。到目前为止，世界上只有两个小组成功地进行了此类模拟。我们还进行了有关相对论GRB-jets传播的数值模拟。我们成功地通过估计GRB喷气机的光电发射来解释了GRB中的光度与伽马射线能量之间的现象关系。此外，我们进行了蒙特卡洛模拟，以在GRB-jets中传播伽马射线。我们成功地解释了GRB的典型光谱以及巨大的极化，这是日本卫星Ikaros最近观察到的。

项目成果

Can electron distribution functions be derived through the Sunyaev-Zel'dovich effect?

可以通过 Sunyaev-Zeldovich 效应导出电子分布函数吗？

• DOI: 10.1051/0004-6361/201016036
• 发表时间: 2011
• 期刊: Astronomy & Astrophysics
• 影响因子: 6.5
• 作者: Prokhorov;D. A.;Colafrancesco;S.;Akahori;T.;Yoshikawa;K.;Nagataki;S.;Seon;K.-I.
• 通讯作者: K.-I.

Origins of short gamma-ray bursts deduced from offsets in their host galaxies revisited

重新审视从宿主星系的偏移推断出的短伽马射线暴的起源

• DOI: 10.1088/1674-4527/12/9/006
• 发表时间: 2012
• 期刊: Research in Astronomy and Astrophysics
• 影响因子: 1.8
• 作者: Cui;Xiao-Hong; Nagataki;Shigehiro: Aoi;Junichi ; Xu;Ren-Xin
• 通讯作者: Ren-Xin

Effects of Rotation on Stochasticity of Gravitational Waves in the Nonlinear Phase of Core-collapse Supernovae

核心塌陷超新星非线性阶段自转对引力波随机性的影响

• DOI: 10.1088/0004-637x/736/2/124
• 发表时间: 2011
• 期刊: The Astrophysical Journal
• 作者: Kotake;Kei ; Iwakami-Nakano;Wakana ; Ohnishi;Naofumi
• 通讯作者: Naofumi

Collapsar Simulations: Central Engine of Long Gamma-Ray Bursts

塌缩星模拟：长伽马射线暴的中央引擎

• 发表时间: 2013
• 作者: Lee;Slane;Ellison;Nagataki;Patnaude;Shigehiro Nagataki;Shigehiro Nagataki;Shigehiro Nagataki;Shigehiro Nagataki;Shigehiro Nagataki;Shigehiro Nagataki;長瀧重博;Shigehiro Nagataki;Shigehiro Nagataki;Shigehiro Nagataki;Shigehiro Nagataki;Shigehiro Nagataki;Shigehiro Nagataki;Shigehiro Nagataki
• 通讯作者: Shigehiro Nagataki

Challenge of Astrophysical Big Bang Laboratory: From Central Engine to Remnants

天体物理大爆炸实验室的挑战：从中央发动机到遗迹

• 发表时间: 2013
• 作者: Lee;Slane;Ellison;Nagataki;Patnaude;Shigehiro Nagataki;Shigehiro Nagataki;Shigehiro Nagataki;Shigehiro Nagataki;Shigehiro Nagataki;Shigehiro Nagataki;長瀧重博;Shigehiro Nagataki;Shigehiro Nagataki;Shigehiro Nagataki;Shigehiro Nagataki;Shigehiro Nagataki;Shigehiro Nagataki;Shigehiro Nagataki;Shigehiro Nagataki;Shigehiro Nagataki
• 通讯作者: Shigehiro Nagataki