COSMIC STRUCTURE FORMATION

被引：6

作者：

BERTSCHINGER, E ^{[1
]}

机构：

[1] MIT, DEPT PHYS, CAMBRIDGE, MA 02139 USA

来源：

PHYSICA D-NONLINEAR PHENOMENA | 1994年 / 77卷 / 1-3期

基金：

美国国家科学基金会; 美国国家航空航天局;

关键词：

D O I：

10.1016/0167-2789(94)90145-7

中图分类号：

O29 [应用数学];

学科分类号：

070104 ;

摘要：

This article reviews the prevailing paradigm for how galaxies and larger structures formed in the universe: gravitational instability. Basic observational facts are summarized to motivate the standard cosmological framework underlying most detailed investigations of structure formation. The observed universe approaches spatial uniformity on scales larger than about 10(26) Cm. On these scales gravitational dynamics is almost linear and therefore relatively easy to relate to observations of large-scale structure. On smaller scales cosmic structure is complicated not only by nonlinear gravitational clustering but also by nonlinear nongravitational gas dynamical processes. The complexity of these phenomena makes galaxy formation one of the grand challenge problems of the physical sciences. No fully satisfactory theory can presently account in detail for the observed cosmic structure. However, as this article summarizes, significant progress has been made during the last few years.

引用

页码：354 / 379

页数：26

共 122 条

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