Tang Ze-mei. The Linear Growth of the Density Wave in Galaxies[J]. Applied Mathematics and Mechanics, 1983, 4(2): 233-237.
Citation: Tang Ze-mei. The Linear Growth of the Density Wave in Galaxies[J]. Applied Mathematics and Mechanics, 1983, 4(2): 233-237.

The Linear Growth of the Density Wave in Galaxies

  • Received Date: 1980-05-23
  • Publish Date: 1983-04-15
  • The aim of this article is to study the linear growth of the density wave in galaxies by means of numerically resolving unsteady, two-dimensional hydrodynamic equations coupled with Poisson equation under the condition that the local asymptotic solution of linear density wave is given.as an initial value. The results show that the perturbed peak density of linear density wave grows to the same order as the basic state density during merely tens of million years,the spiral pattern emerging which has barred structure in its inner region. The angular velocity of the spiral pattern and the growth rate of perturbed density vary gradually with changes in spatial place and time. The approximate property of quasistationary spiral structure hypothesis is discussed in this paper.
  • loading
  • [1]
    Lin,C,C,and Y,Y,Lau,Studies in Applied Nlathernatics,60(1979).97.
    [2]
    Pannatoni,R,F,and Y,Y,Lau,Proc,Natl,Acad,Sci.,USA,76(1979),1,4.Ast ronomy,
    [3]
    Miller,R,H,and K,H,Prendergast.,4strophys,J.,151(1968),699.
    [4]
    解伯民、巢纪平,科学通报,23(1978).3,158.
    [5]
    胡文瑞,科学通报,22(1977),79.
    [6]
    秦元勋等,1977年全国天体物理会议论义集,科学出版社(1981).
    [7]
    秦元勋等,科学通报,24(1979),606.
    [8]
    林家翘,《星系螺旋结构理论》,胡文瑞,韩念国译,科学出版社(1977).
    [9]
    Schmidt,M.,in Galactic Structure,(1965),513.
    [10]
    Lindblad,B.,Handb,Physik.53(1959),21.
    [11]
    Ostriker,J,P,and P,J.F.Peebles,Astrophs,J.,186(1973),467.
  • 加载中

Catalog

    通讯作者: 陈斌, bchen63@163.com
    • 1. 

      沈阳化工大学材料科学与工程学院 沈阳 110142

    1. 本站搜索
    2. 百度学术搜索
    3. 万方数据库搜索
    4. CNKI搜索

    Article Metrics

    Article views (1566) PDF downloads(464) Cited by()
    Proportional views
    Related

    /

    DownLoad:  Full-Size Img  PowerPoint
    Return
    Return