Caustics of compensated spherical lens models

被引：17

作者：

Ellis, GFR ^{[1
]}

Solomons, DM ^{[1
]}

机构：

[1] Univ Cape Town, Dept Appl Math, ZA-7700 Rondebosch, South Africa

来源：

CLASSICAL AND QUANTUM GRAVITY | 1998年 / 15卷 / 08期

关键词：

D O I：

10.1088/0264-9381/15/8/017

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We consider compensated spherical lens models and the caustic surfaces they create in the past light cone. Examination of cusp and crossover angles associated with particular source and lens redshifts gives explicit lensing models that confirm the claims of paper I (Ellis et al 1998 Class. Quantum Grav. 15 2345), namely that area distances can differ by substantial factors from angular diameter distances even when averaged over large angular scales. 'Shrinking' in apparent sizes occurs, typically by a factor of 3 for a single spherical lens, on the scale of the cusp caused by the lens; summing over many lenses will still leave a residual effect.

引用

页码：2381 / 2396

页数：16

共 20 条

[11] DISCOVERY OF A NEW GRAVITATIONAL LENS SYSTEM [J].

LAWRENCE, CR ;

SCHNEIDER, DP ;

SCHMIDT, M ;

BENNETT, CL ;

HEWITT, JN ;

BURKE, BF ;

TURNER, EL ;

GUNN, JE .

SCIENCE, 1984, 223 (4631) :46-49

[12]

MAGAIN P, 1988, NATURE, V334, P327

[13]

MELLIER Y, LECT NOTES PHYSICS, V360

[14] The distortion of the area distance-redshift relation in inhomogeneous isotropic universes [J].

Mustapha, N ;

Bassett, BACC ;

Hellaby, C ;

Ellis, GFR .

CLASSICAL AND QUANTUM GRAVITY, 1998, 15 (08) :2363-2379

[15]

PELLODESCAYRE R, 1988, ASTRON ASTROPHYS, V190, pL11

[16] METHOD FOR DETECTING A COSMOLOGICAL DENSITY OF CONDENSED OBJECTS [J].

PRESS, WH ;

GUNN, JE .

ASTROPHYSICAL JOURNAL, 1973, 185 (02) :397-412

[17]

Schneider P., 1999, GRAVITATIONAL LENSES

[18]

SOUCAIL G, 1988, ASTRON ASTROPHYS, V191, pL19

[19]

STIDEL CC, 1990, ASTRON J, V99, P1693

[20] APPARENT LUMINOSITIES IN A LOCALLY INHOMOGENEOUS UNIVERSE [J].

WEINBERG, S .

ASTROPHYSICAL JOURNAL, 1976, 208 (01) :L1-L3

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