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Student Number 87229006
Author Zhe-Xian Guo(郭政靈)
Author's Email Address No Public.
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Department Graduate Institute of Astronomy
Year 1999
Semester 2
Degree Master
Type of Document Master's Thesis
Language zh-TW.Big5 Chinese
Title 星際物質演化的研究
Date of Defense 2000-07-11
Page Count 52
Keyword
  • 星際物質
  • 演化
  • Abstract none
    Table of Content 1.0 簡介1
    1.1階層模型1
    1.2星際物質模型3
    1.3星系中有關星球形成率的統計觀測5
    1.4從星際物質模型看星球形成的週期7
    1.5星球形成率與磁場的關係8
    2模型的建構10
    2.1時間尺度10
    2.2星球活動相關能量10
    2.3星際物質亂流能量11
    2.4磁場能量11
    3模型的分析與求解13
    3.1無因次化13
    3.2定點的分析13
    3.3定點的II參數空間圖15
    3.4穩定定點的典型解17
    3.4.1穩定節點17
    3.4.2穩定焦點18
    3.5中心點19
    3.6極限環20
    4.擾動或雜訊的影響23
    4.1週期驅動23
    4.2隨機驅動27
    4.2.1隨機驅動對穩定焦點的影響28
    4.2.2極限環的解受到隨機驅動33
    5.結果分析36
    5.1時間尺度的粗略估計36
    5.2星球形成相關能量的週期37
    5.3參數的影響37
    5.4星系演化圖41
    5.5結論41
    附錄一、求極限環的振幅及頻率的方法45
    附錄二、不同的頻率影響極限環49
    參考文獻52
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    Kulsrud, R., 1999, ARA&A,37,37
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    Advisor
  • Chung-Ming Ko(高仲明)
  • Files
  • 87229006.pdf
  • approve immediately
    Date of Submission 2000-07-11

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