Microlensing by natural wormholes: theory and simulations

Details Microlensing by natural wormholes: theory and simulations Microlensing by natural wormholes: theory and simulations

2001-05-18

arxiv.org/abs/gr-qc/0105070v1

Phys.Rev. D65 (2002) 023001

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

16 pages, 24 postscript figures (3 coloured), revtex style, submitted to Phys. Rev. D

Scientific paper

10.1103/PhysRevD.65.023001

We provide an in depth study of the theoretical peculiarities that arise in effective negative mass lensing, both for the case of a point mass lens and source, and for extended source situations. We describe novel observational signatures arising in the case of a source lensed by a negative mass. We show that a negative mass lens produces total or partial eclipse of the source in the umbra region and also show that the usual Shapiro time delay is replaced with an equivalent time gain. We describe these features both theoretically, as well as through numerical simulations. We provide negative mass microlensing simulations for various intensity profiles and discuss the differences between them. The light curves for microlensing events are presented and contrasted with those due to lensing produced by normal matter. Presence or absence of these features in the observed microlensing events can shed light on the existence of natural wormholes in the Universe.

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