Structure Formation and Thormel History in the expanding Universe

膨胀宇宙中的结构形成和索梅尔历史

• 批准号: 06452021
• 负责人: SATO Humitaka
• 金额: $ 4.8万
• 依托单位: KYOTO UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 1994
• 资助国家: 日本
• 起止时间: 1994 至 1996
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-06452021/
• 关键词: galaxy formation; star formation; large scale structure; molecular hydrogen; nadiative transfer; rumerical hydrodynamics; Early Unirarse; 幅射輸送

The theory of structure formation in the expanding Universe is getting the unified knowledge of cosmological microwave background, large scale distribution of galaxies, morphology of galaxies which we know from deap servey observation, element abundance within stars. For this reason, we cralify all physical processes from very early perturbations to star mass object formation. Previously, we treated separately the problem ob initial growth of perturbation which is related to large scale strucure and star formation which is treated as a part of the galaxy evolution. We treat these proberm together.The largest sturcture in the Universe, the scale of the cluster of galaxies, has very high temperature as we know from X ray observation. On the other hand, the structure less massive than a galaxy, we must consider non equilibrium processes which is induced by the shock wave heating and leads the formation of molecular hydrogen. We treat problems of non spherical symmetric gravitational contraction, shock wave heating, formation of molecular hydrogen, cooling by molecular hydrogen, radiative transfer, frag-mentation and etc.

膨胀宇宙结构形成理论是对宇宙微波背景、星系大尺度分布、深入观测的星系形态、恒星内部元素丰度等问题的统一认识。基于这个原因，我们将所有的物理过程，从非常早期的扰动到星星质量的天体的形成，进行了标准化。以前，我们把与大尺度结构有关的扰动的初始增长问题和作为星系演化一部分的星星形成问题分开处理。我们把这些问题放在一起考虑，宇宙中最大的结构，星系团的尺度，有很高的温度，这是我们从X射线观测中知道的。另一方面，对于质量小于星系的结构，我们必须考虑激波加热引起的非平衡过程，这种非平衡过程导致了分子氢的形成。我们讨论了非球对称引力收缩、激波加热、分子氢的形成、分子氢冷却、辐射传递和碎裂等问题。

项目成果

T. Hamasaki: "Self Excitation of the Tunneling Scalar Field in False Vacuum Decay" Phys. Rev. D. (印刷中). (1996)

T. Hamasaki：“假真空衰变中隧道标量场的自激”Phys Rev. D.（出版中）。

Takashi Nakamura: "The Minimum Total Mass of MACHOs and Halo Models of the Galaxy" Astrophys.J.Lett.473. L99-L102 (1996)

Takashi Nakamura：“银河系的 MACHO 和光环模型的最小总质量”Astrophys.J.Lett.473。

官谷幸利: "Microlensing and Halo Models of the Galaxy" Publ.Astron.Soc.Japan. 48. 479-487 (1996)

Yukitoshi Kantani：“银河系的微透镜和光环模型”Publ.Astron.Soc.Japan 48. 479-487 (1996)。

中村卓史: "The Minimum Total Mass of MACHOs and Halo Modeles of the Galaxy" Astrophys.J.Lett.473. L99-L102 (1996)

Takashi Nakamura：“银河系的 MACHO 和光环模型的最小总质量”Astrophys.J.Lett.473 (1996)。

Yukitoshi Kanda: "Microlensing and Halo Models of the Galaxy" Publ.Astron.Soc.Japan. 48. 479-487 (1996)

Yukitoshi Kanda：“银河系的微透镜和光环模型”Publ.Astron.Soc.Japan。