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GR: Fachverband Gravitation und Relativitätstheorie

GR 13: Klassische Allgemeine Relativitätstheorie II

GR 13.7: Vortrag

Donnerstag, 28. Februar 2013, 15:45–16:00, HS 6

Microlensing by an Ellis wormhole — •Volker Perlick¹ and Maciej Bobrowski^1,2 — ¹ZARM, Universität Bremen, 28359 Bremen — ²Physics Department, University of Wroclaw, Poland

The Ellis wormhole, first discussed by American physicist Homer Ellis in 1973, is the best known example of a static traversable wormhole of the Morris-Thorne class. We use the exact lens map for spherically symmetric and static spacetimes for writing all lensing features explicitly in terms of elliptic integrals, for light sources and observers at arbitrary radius value r_S and r_O, respectively. On the basis of these formulas we discuss the microlensing properties of the Ellis wormhole, i.e., the light curve (magnification as a function of time) for a moving light source.