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Natural Wormholes as Gravitational Lenses

John G. Cramer, Robert L. Forward, Michael S. Morris, Matt Visser, Gregory Benford, Geoffrey A. Landis

astro-pharXiv:astro-ph/9409051

Abstract

Visser has suggested traversable 3-dimensional wormholes that could plausibly form naturally during Big Bang inflation. A wormhole mouth embedded in high mass density might accrete mass, giving the other mouth a net *negative* mass of unusual gravitational properties. The lensing of such a gravitationally negative anomalous compact halo object (GNACHO) will enhance background stars with a time profile that is observable and qualitatively different from that recently observed for massive compact halo objects (MACHOs) of positive mass. We recommend that MACHO search data be analyzed for GNACHOs.

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