Multipole expansion model in gravitational lensing

被引:2
|
作者
Fukuyama, T [1 ]
Kakigi, Y [1 ]
Okamura, T [1 ]
机构
[1] TOKYO INST TECHNOL,DEPT PHYS,MEGURO KU,TOKYO 152,JAPAN
来源
关键词
gravitational lensing; multipole expansion model;
D O I
10.1142/S021827189700025X
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
Nontransparent models of the multipole expansion model and the two point-mass model are analyzed from the catastrophe theory. Singularity behaviours of 2(n)-pole moments are discussed. We apply these models to the triple quasar PG1115+080 and compare with the typical transparent model, softened power law spheroids. The multipole expansion model gives the best fit among them.
引用
收藏
页码:425 / 447
页数:23
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