2003 Fiscal Year Annual Research Report

ブラックホール形成シナリオにもとづくガンマ線バーストの起源

Research Project

Project/Area Number	14079202
Research Institution	The University of Tokyo
Principal Investigator	佐藤勝彦東京大学, 大学院・理学系研究科, 教授 (00111914)
Co-Investigator(Kenkyū-buntansha)	長滝重博東京大学, 大学院・理学系研究科, 助手 (60359643) 戸谷友則京都大学, 大学院・理学系研究科, 助教授 (90321588) 山田章一早稲田大学, 理工学部, 助教授 (80251403)
Keywords	ブラックホール / ガンマ線バースト / 超新星爆発 / 中性子星 / ニュートリノ / スーパーカミオカンデ / 超高エネルギー宇宙線 / AGASA
Research Abstract	1.超新星爆発の数値計算(山田・佐藤) 昨年度までに開発した軸対称2次元のMHDコードは、現実的な核物質の状態方程式と、近似的ではあるがニュートリノの輸送を取り込んだものになっており、本年度は主にこれを用い多くの数値実験を行った。その結果、回転軸付近でニュートリノ加熱が球対称よりも大きくなる可能性を示すと同時に、一様磁場に自転を加えると、回転軸方向にジェット的な衝撃波が伝わることがわかった。いずれの場合についても重力波形の計算を行い、その観測可能性を議論した。さらには、一般相対論を考慮した計算で、ブラックホール近傍からのジェット生成によるガンマ線バーストの可能性も調べた。 2.ガンマ線バーストと超新星の相関(戸谷) ガンマ線バーストと超新星の関連についての研究と,中間質量ブラックホールMACHOsが暗黒物質の可能性を観測的に探索する研究を進めた。超新星2002apのすばる望遠鏡による偏光分光観測から示唆されたジェットの存在について理論的な考察,検証を与え,長く理論的には存在が期待されていた「失敗したガンマ線バースト」ではないかと指摘した. 3.中性子星とガンマ線バースト、及び高エネルギーニュートリノ(長滝) 若い中性子星からのwindが超新星残骸によって閉じ込められている系を考え、wind中には陽子が混在していると考え、pp反応によるニュートリノ、γ線のemissivityを評価した。銀河に於ける、高エネルギーニュートリノ、および高エネルギーγ線の起源の一つとして若い中性子星が有力であると結論され、ガンマ線バーストとの相関も考察された。

Research Products

(31 results)

All Other

All Publications (31 results)

[Publications] K.Takahashi et al.: "Effects of neutrino oscillation on supernova neutrino : inverted mass hierarchy"Prog.Theor.Phys.. 109. 919 (2003)
[Publications] S.Ando et al.: "Detectability of the Supernova Relic Neutrinos and Neutrino Oscillation"Astropart.Phys.. 18. 307-318 (2003)
[Publications] S.Ando et al.: "Three-generation study of neutrino spin-flavor conversion in supernova and implication for neutrino magnetic moment"Phys.Lett.B. 559. 113 (2003)
[Publications] K.Takahashi et al.: "Shock propagation and neutrino oscillation in supernova"Phys.Rev.D. 68. 023003 (2003)
[Publications] K.Kohri et al.: "Upper limit on the mass of RX J1856.5-3754 as a possible quark star"Prog.Theor.Phys.. 109. 765-780 (2003)
[Publications] S.Ando et al.: "Resonant spin-flavor conversion of supernova neutrinos : Dependence on presupernova models and future prospects"Phys.Rev.D. 68. 023003 (2003)
[Publications] K.Kotake et al.: "Anisotropic Neutrino Radiation in Rotational Core Collapse"Astrophys.J.. 595. 304 (2003)
[Publications] K.Kotake et al.: "Gravitational Radiation from Rotational Core Collapse : Effects of Magnetic Fields and Realistic Equation of States"Phys.Rev.D.. (in press). (2004)
[Publications] K.Takahashi et al.: "Supernova Neutrinos, Neutrino Oscillations, and the Mass of the Progenitor Star"Phys.Rev D. 68. 113009 (2003)
[Publications] G.Watanabe et al.: "Structure of Cold Nuclear matter at Subnuclear densities by Quantum Molecular Dynamics"Phys.Rev C. 68. 035806 (2003)
[Publications] S.Ando et al.: "A comprehensive study of neutrino spin-flavor conversion in supernovae and the neutrino mass hierarchy"Jounal of Cosmology and Astroparticle Physics. 10. 001 (2003)
[Publications] K.Kotake et al.: "Gravitational Collapse of Rotating Massive Stars"Nuclear Physics A. 718. 629c (2003)
[Publications] H.Suzuki et al.: "Protoneutron star cooling with a new equation of state"Nuci.Phys.A.. 718. 703-705 (2003)
[Publications] K.Sumiyoshi et al.: "Properties of a relativistic equation of state for collapse-driven supernovae"Nuci.Phys.A.. 730. 227-251 (2004)
[Publications] A.Mizuta et al.: "Propagation and Dynamics of Relativistic Jets"Astrophys.J.. (in press). (2004)
[Publications] Y.Mizuno et al.: "General Relativistic Magnetohydrodynamic Simulations of Collapsars"Astrophys.J.. (in press). (2004)
[Publications] K.Kotake et al.: "Gravitational Radiation from Rotational Core Collapse : Effects of Magnetic Fields and Realistic Equation of States"Phys.Rev.D.. 68. 044023 (2003)
[Publications] K.Kohri et al.: "Anisotropic e+e- Pressure due to QED Effects in Strong Magnetic Fields and Application to Entropy Production in Supernovae"Astroparticle Phys.. (in press). (2004)
[Publications] K.Kotake et al.: "Magnetorotational Effects on Anisotropic Neutrino Emission and Convection in Core Collapse Supernovae"Astrophys.J.. (in press). (2004)
[Publications] S.Yamada et al.: "Numerical Study on the Rotational Collapse of Strongly Magnetized Cores of Massive Stars"Astrophys.J.. (in press). (2004)
[Publications] T.Totani: "Cluster-Cluster Microlensing as a Probe of Intracluster Stars, MACHOs, and Remnants of the First-Generation Stars"Astrophys.J.. 586. 735-744 (2003)
[Publications] K.S.Kawabata et al.: "On the Spectrum and Sectropolarimetry of Type Ic Hypernova SN 2003dh/GRB 030329"Astrophys.J.. 593. L19-L22 (2003)
[Publications] T.Totani: "A Failed Gamma-Ray Burst with Dirty Energetic Jets Spirited Away? New Implications for the GRB-SN Connection"Astrophys.J.. 598. 1151-1162 (2003)
[Publications] C.P.Fragile et al.: "Constraints on models for TeV gamma rays from gamma-ray bursts"Astropart.Phys.. 20. 591 (2004)
[Publications] H.Yoshiguchi et al.: "Small-Scale Clustering in the Isotropic Arrival Distribution of Ultra-High-Energy Cosmic Rays"Astrophys.J.. 586. 1211 (2003)
[Publications] H.Yoshiguchi et al.: "Arrival Distribution of Ultra-High Energy Cosmic Rays : Prospects for the Future"Astrophys.J.. 592. 311-320 (2003)
[Publications] S.Nagataki et al.: "Explosive Nucleosynthesis Associated with Formation of Jet-induce GRBs in Massive Stars"Astrophys.J.. 596. 401-413 (2003)
[Publications] S.Nagataki: "High-Energy Neutrinos Produce by Interactions of Relativistic Protons in Shocked Pulsar Winds"Astrophys.J.. 600. 883-904 (2004)
[Publications] H.Yoshiguchi et al.: "A New Method for Caiculating Arrival Distribution of Ultra-High Energy Cosmic Rays above 10^<19> eV"Astrophys.J.. 596. 1044-1052 (2003)
[Publications] Y.Sendouda: "Constraints on the Mass Spectrum of Primordial Black Holes and Braneworld Parameters from the Diffuse Photon Background"Phys.Rev.D.. 68. 103510 (2003)
[Publications] H.Yoshiguchi et al.: "Numerical Study on Propagation of Ultra-High Energy Cosmic Rays in the Galactic Magnetic Field"Astrophys.J.. (in press). (2004)

2003 Fiscal Year Annual Research Report

ブラックホール形成シナリオにもとづくガンマ線バーストの起源

Principal Investigator

佐藤 勝彦 東京大学, 大学院・理学系研究科, 教授 (00111914)

Research Products

[Publications] K.Takahashi et al.: "Effects of neutrino oscillation on supernova neutrino : inverted mass hierarchy"Prog.Theor.Phys.. 109. 919 (2003)

[Publications] S.Ando et al.: "Detectability of the Supernova Relic Neutrinos and Neutrino Oscillation"Astropart.Phys.. 18. 307-318 (2003)

[Publications] S.Ando et al.: "Three-generation study of neutrino spin-flavor conversion in supernova and implication for neutrino magnetic moment"Phys.Lett.B. 559. 113 (2003)

[Publications] K.Takahashi et al.: "Shock propagation and neutrino oscillation in supernova"Phys.Rev.D. 68. 023003 (2003)

[Publications] K.Kohri et al.: "Upper limit on the mass of RX J1856.5-3754 as a possible quark star"Prog.Theor.Phys.. 109. 765-780 (2003)

[Publications] S.Ando et al.: "Resonant spin-flavor conversion of supernova neutrinos : Dependence on presupernova models and future prospects"Phys.Rev.D. 68. 023003 (2003)

[Publications] K.Kotake et al.: "Anisotropic Neutrino Radiation in Rotational Core Collapse"Astrophys.J.. 595. 304 (2003)

[Publications] K.Kotake et al.: "Gravitational Radiation from Rotational Core Collapse : Effects of Magnetic Fields and Realistic Equation of States"Phys.Rev.D.. (in press). (2004)

[Publications] K.Takahashi et al.: "Supernova Neutrinos, Neutrino Oscillations, and the Mass of the Progenitor Star"Phys.Rev D. 68. 113009 (2003)

[Publications] G.Watanabe et al.: "Structure of Cold Nuclear matter at Subnuclear densities by Quantum Molecular Dynamics"Phys.Rev C. 68. 035806 (2003)

[Publications] S.Ando et al.: "A comprehensive study of neutrino spin-flavor conversion in supernovae and the neutrino mass hierarchy"Jounal of Cosmology and Astroparticle Physics. 10. 001 (2003)

[Publications] K.Kotake et al.: "Gravitational Collapse of Rotating Massive Stars"Nuclear Physics A. 718. 629c (2003)

[Publications] H.Suzuki et al.: "Protoneutron star cooling with a new equation of state"Nuci.Phys.A.. 718. 703-705 (2003)

[Publications] K.Sumiyoshi et al.: "Properties of a relativistic equation of state for collapse-driven supernovae"Nuci.Phys.A.. 730. 227-251 (2004)

[Publications] A.Mizuta et al.: "Propagation and Dynamics of Relativistic Jets"Astrophys.J.. (in press). (2004)

[Publications] Y.Mizuno et al.: "General Relativistic Magnetohydrodynamic Simulations of Collapsars"Astrophys.J.. (in press). (2004)

[Publications] K.Kotake et al.: "Gravitational Radiation from Rotational Core Collapse : Effects of Magnetic Fields and Realistic Equation of States"Phys.Rev.D.. 68. 044023 (2003)

[Publications] K.Kohri et al.: "Anisotropic e+e- Pressure due to QED Effects in Strong Magnetic Fields and Application to Entropy Production in Supernovae"Astroparticle Phys.. (in press). (2004)

[Publications] K.Kotake et al.: "Magnetorotational Effects on Anisotropic Neutrino Emission and Convection in Core Collapse Supernovae"Astrophys.J.. (in press). (2004)

[Publications] S.Yamada et al.: "Numerical Study on the Rotational Collapse of Strongly Magnetized Cores of Massive Stars"Astrophys.J.. (in press). (2004)

[Publications] T.Totani: "Cluster-Cluster Microlensing as a Probe of Intracluster Stars, MACHOs, and Remnants of the First-Generation Stars"Astrophys.J.. 586. 735-744 (2003)

[Publications] K.S.Kawabata et al.: "On the Spectrum and Sectropolarimetry of Type Ic Hypernova SN 2003dh/GRB 030329"Astrophys.J.. 593. L19-L22 (2003)

[Publications] T.Totani: "A Failed Gamma-Ray Burst with Dirty Energetic Jets Spirited Away? New Implications for the GRB-SN Connection"Astrophys.J.. 598. 1151-1162 (2003)

[Publications] C.P.Fragile et al.: "Constraints on models for TeV gamma rays from gamma-ray bursts"Astropart.Phys.. 20. 591 (2004)

[Publications] H.Yoshiguchi et al.: "Small-Scale Clustering in the Isotropic Arrival Distribution of Ultra-High-Energy Cosmic Rays"Astrophys.J.. 586. 1211 (2003)

[Publications] H.Yoshiguchi et al.: "Arrival Distribution of Ultra-High Energy Cosmic Rays : Prospects for the Future"Astrophys.J.. 592. 311-320 (2003)

[Publications] S.Nagataki et al.: "Explosive Nucleosynthesis Associated with Formation of Jet-induce GRBs in Massive Stars"Astrophys.J.. 596. 401-413 (2003)

[Publications] S.Nagataki: "High-Energy Neutrinos Produce by Interactions of Relativistic Protons in Shocked Pulsar Winds"Astrophys.J.. 600. 883-904 (2004)

[Publications] H.Yoshiguchi et al.: "A New Method for Caiculating Arrival Distribution of Ultra-High Energy Cosmic Rays above 10^<19> eV"Astrophys.J.. 596. 1044-1052 (2003)

[Publications] Y.Sendouda: "Constraints on the Mass Spectrum of Primordial Black Holes and Braneworld Parameters from the Diffuse Photon Background"Phys.Rev.D.. 68. 103510 (2003)

[Publications] H.Yoshiguchi et al.: "Numerical Study on Propagation of Ultra-High Energy Cosmic Rays in the Galactic Magnetic Field"Astrophys.J.. (in press). (2004)

佐藤勝彦東京大学, 大学院・理学系研究科, 教授 (00111914)