Gravitational lens under perturbations: Symmetry of perturbing potentials with invariant caustics

Details Gravitational lens under perturbations: Symmetry of perturbing potentials with invariant caustics Gravitational lens under perturbations: Symmetry of perturbing potentials with invariant caustics

2004-10-15

arxiv.org/abs/astro-ph/0410388v2

Mon.Not.Roy.Astron.Soc. 356 (2005) 1409-1428

Astronomy and Astrophysics

Astrophysics

to appear in MNRAS, including 4 figures, typo corrected, essentially identical to the version to be published

Scientific paper

10.1111/j.1365-2966.2004.08581.x

When the gravitational lensing potential can be approximated by that of circularly symmetric system affected by weak perturbations, it is found that the shape of the resulting (tangential) caustics is entirely specified by the local azimuthal behaviour of the affecting perturbations. This provides a common mathematical groundwork for understanding problems such as the close-wide (d <-> 1/d) separation degeneracy of binary lens microlensing lightcurves and the shear-ellipticity degeneracy of quadruple image lens modelling.

Affiliated with

Also associated with

No associations

Rating

Gravitational lens under perturbations: Symmetry of perturbing potentials with invariant caustics does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Gravitational lens under perturbations: Symmetry of perturbing potentials with invariant caustics, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Gravitational lens under perturbations: Symmetry of perturbing potentials with invariant caustics will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-289594