1997 Fiscal Year Annual Research Report

初期宇宙・銀河・物質の起源と進化

Research Project

Project/Area Number	07304026
Research Institution	National Astronomical Observatory
Principal Investigator	梶野敏貴国立天文台, 理論天文学研究系, 助教授 (20169444)
Co-Investigator(Kenkyū-buntansha)	家正則国立天文台, 光学赤外線天文学・観測システム研究系, 教授 (30111446) 辻隆東京大学, 天文学研究教育センター, 教授 (20011546) 吉井讓東京大学, 天文学研究教育センター, 教授 (00158388) 野本憲一東京大学, 大学院・理学系研究科, 教授 (90110676) 高原文郎東京都立大学, 理学部, 教授 (20154891)
Keywords	初期宇宙 / ビックバン元素合成 / 銀河の化学進化 / 爆発的元素合成 / 統一理論 / クォーク・ハドロン / クェーサー / 暗黒物質
Research Abstract	本研究プロジェクトの目的は,「ビック・バンに始まり,現在に至るまでの宇宙・銀河・星の進化と物質の起源を明らかにする」ことであり,今年度は最終年度にあたる。前半は昨年度に引き続いて,宇宙物理・天文・素粒子・原子核の諸分野をカバーする観測・実験・理論研究者よりなる四つのサブグループを組織して研究活動を行なった。研究内容は,(1)宇宙のEW相転移,QCD相転移におけるCP対象性の破れ,バリオン数生成,非一様時空構造,ビックバン元素合成への影響(初期宇宙グループ),(2)銀河・銀河団形成の時間発展,化学進化,宇宙進化との関係,重力レンズ,高赤方偏移クエーサー・原始銀河の探索(銀河・銀河団グループ),(3)超新星・新星での爆発的元素合成,中性子星・ブラックホールの形成と内部構造,宇宙線の起源と時間発展,原始惑星系形成,ハロ-星・超新星のスペクトロスコピー,Xγ線バースト探索(星,原子核グループ),(4)初期宇宙でのビックバン元素合成,宇宙線と星間物質との相互作用による核合成,星内部での核合成の研究と天体核反能率の測定(原子核グループ),等であった。続いて,これらの成果を総合するために,1997年末に研究代表者・研究分担者・研究協力者ら全員による総合研究会を開催して研究成果の取りまとめを行ない,海外から各分野を代表する著名な研究者を招聘して研究成果に対する評価を受けた。同時に,研究成果を積極的に国内外の研究集会で発表することに努めた。

Research Products

(18 results)

All Other

All Publications (18 results)

[Publications] M.Orito: "Geometrical effects of baryon density inhomogenectier on primordial nucleosynthesis." Astrophysical Journal. 488. 515-523 (1997)
[Publications] T.Kajino: "Big-Bang vs.Galastic Origin of Elements in Metal-deficient stars." Nuclear Physics. A621. 572c-575c (1997)
[Publications] T.Kajino: "Neutrinos and Big-Bang Nucleosynthesic" Nuclear Physics. (in press). (1998)
[Publications] E.Kambe: "Multiperiadicity of ζ-Oph from Multisite Observations." Astrophysical Journal. 481. 406-419 (1997)
[Publications] N.Arimoto: "The Iron Discrepancy in Elliptical Galaxies after ASCA." Astrophysical Journal. 477. 128-143 (1997)
[Publications] M.Shindo: "Rapidly rotating stars with either H burning and He burning core." Astronomy and Astrophysics. 326. 177-186 (1997)
[Publications] E.Nishihara: "Difference between Aslpha and [O III] 5007 liner in High-Red-Shift Quasars." Astrophysical Journal. 488. L27-L30 (1997)
[Publications] I.Iwasaki: "Scaling of Chiral Order Parameter in two-Flevor QCD." Physical Review Letters. 78. 179-182 (1997)
[Publications] S.Kubono: "Nuclear Astrophysics with Radioactive Nuclear Beams." Progress of Theoretical Physics. 96. 275-306 (1996)
[Publications] Y.Aikawa: "Erolution of Moleculer Abundance in Protoplanetary Disks." Astrophysical Journal. 486. L51-L54 (1997)
[Publications] O.Miyamura: "Monopole Dominance for nonperturbative QCD." Australian Journal of Physics. 50. 234-243 (1997)
[Publications] J.N.Reeves: "An X-ray Survey of Quasars Using ASCA" Monthly Notices of Royal Astronomical Society. 292. 468-478 (1997)
[Publications] J.Arimoto: "1994-1996 Optical Outbursts of the BL Lac Object OJ287." Publications of Astronomical Socieity of Pacific. 109. 300-310 (1997)
[Publications] K.Iida: "Spin down of Neutron Stars and Compositional Transitions in Cold Crustal Matter." Astrophysical Journal. 477. 294-312 (1997)
[Publications] J.Miyazaki: "Gamma-Ray Spectra from a Polar Cap Model of Pulsars." Monthly Notices of Royal Astronomical Society. 275. 1077-1092 (1997)
[Publications] Y.Taniguchi: "Does the Radiative Avalanche Fueling Work in Any AGN?" Astrophysical Journal. 487. L17-L20 (1997)
[Publications] H.Toki: "DI=4 bifurcation in ground bands of even even nuclei and the success of interasting boson model." Physical Review Letters. 79. 2006-2009 (1997)
[Publications] T.Tsuji: "Warm molecular envelope of M-giants and Miras:a new molecular forming region inmasked by the ISO-SWS." Astronomy and Astrophysics. 320. L1-L4 (1997)

1997 Fiscal Year Annual Research Report

初期宇宙・銀河・物質の起源と進化

Principal Investigator

梶野 敏貴 国立天文台, 理論天文学研究系, 助教授 (20169444)

Research Products

[Publications] M.Orito: "Geometrical effects of baryon density inhomogenectier on primordial nucleosynthesis." Astrophysical Journal. 488. 515-523 (1997)

[Publications] T.Kajino: "Big-Bang vs.Galastic Origin of Elements in Metal-deficient stars." Nuclear Physics. A621. 572c-575c (1997)

[Publications] T.Kajino: "Neutrinos and Big-Bang Nucleosynthesic" Nuclear Physics. (in press). (1998)

[Publications] E.Kambe: "Multiperiadicity of ζ-Oph from Multisite Observations." Astrophysical Journal. 481. 406-419 (1997)

[Publications] N.Arimoto: "The Iron Discrepancy in Elliptical Galaxies after ASCA." Astrophysical Journal. 477. 128-143 (1997)

[Publications] M.Shindo: "Rapidly rotating stars with either H burning and He burning core." Astronomy and Astrophysics. 326. 177-186 (1997)

[Publications] E.Nishihara: "Difference between Aslpha and [O III] 5007 liner in High-Red-Shift Quasars." Astrophysical Journal. 488. L27-L30 (1997)

[Publications] I.Iwasaki: "Scaling of Chiral Order Parameter in two-Flevor QCD." Physical Review Letters. 78. 179-182 (1997)

[Publications] S.Kubono: "Nuclear Astrophysics with Radioactive Nuclear Beams." Progress of Theoretical Physics. 96. 275-306 (1996)

[Publications] Y.Aikawa: "Erolution of Moleculer Abundance in Protoplanetary Disks." Astrophysical Journal. 486. L51-L54 (1997)

[Publications] O.Miyamura: "Monopole Dominance for nonperturbative QCD." Australian Journal of Physics. 50. 234-243 (1997)

[Publications] J.N.Reeves: "An X-ray Survey of Quasars Using ASCA" Monthly Notices of Royal Astronomical Society. 292. 468-478 (1997)

[Publications] J.Arimoto: "1994-1996 Optical Outbursts of the BL Lac Object OJ287." Publications of Astronomical Socieity of Pacific. 109. 300-310 (1997)

[Publications] K.Iida: "Spin down of Neutron Stars and Compositional Transitions in Cold Crustal Matter." Astrophysical Journal. 477. 294-312 (1997)

[Publications] J.Miyazaki: "Gamma-Ray Spectra from a Polar Cap Model of Pulsars." Monthly Notices of Royal Astronomical Society. 275. 1077-1092 (1997)

[Publications] Y.Taniguchi: "Does the Radiative Avalanche Fueling Work in Any AGN?" Astrophysical Journal. 487. L17-L20 (1997)

[Publications] H.Toki: "DI=4 bifurcation in ground bands of even even nuclei and the success of interasting boson model." Physical Review Letters. 79. 2006-2009 (1997)

[Publications] T.Tsuji: "Warm molecular envelope of M-giants and Miras:a new molecular forming region inmasked by the ISO-SWS." Astronomy and Astrophysics. 320. L1-L4 (1997)

梶野敏貴国立天文台, 理論天文学研究系, 助教授 (20169444)