National Tsing Hua University Institutional Repository:Chaos in spiral galaxies
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    题名: Chaos in spiral galaxies
    作者: Shu, F.H.;Chakrabarti, S.;Laughlin, G.
    教師: 徐遐生
    日期: 2004
    出版者: Springer Verlag
    關聯: PENETRATING BARS THROUGH MASKS OF COSMIC DUST: THE HUBBLE TUNING FORK STRIKES A NEW NOTE, Springer, Volume 319, 2004, Pages 581-600
    关键词: galactic structure
    spiral galaxies
    interstellar gas dynamics
    摘要: We review spiral density-wave theory and its realtionship to the disordered appearance of population I objects in some disk galaxies. We discuss mechanisms proposed for the formation of (a) feathers by gravitational instability behind galactic shocks, (b) branches by the action of ultraharmonic resonances, (c) spurs by reflection of leading waves off sharp features induced by nonlinear dredging, and (d) flocculence by the chaos produced from overlapping resonances. We conclude that disorder arises in spiral galaxies not so much from disorderly causes as from too sensitive a response of the interstellar medium to an orderly but nonlinear spiral gravitational field.
    相関连結: http://www.springerlink.com/
    URI: http://nthur.lib.nthu.edu.tw/dspace/handle/987654321/80930
    显示于类别:[ 徐遐生 (2002-2006)] 期刊論文
    [物理系] 期刊論文

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