Deflection of light and particles by moving gravitational lenses
Talk given at the ANGLES kickoff workshop 2004 at the MPIfR in Bonn, Germany, 6. April 2004
Olaf Wucknitz [1], Ulrich Sperhake [2]
- Universität Potsdam, Institut für Physik, Am Neuen Palais 10, 14469 Potsdam, Germany
- Penn State University, Centers for Gravitational Physics & Geometry and for Gravitational Wave Physics, University Park, PA 16802, USA
Abstract
We discuss the effects of moving gravitational lenses on light as
well as on moving particles in order to achieve an
intuitively consistent picture of these effects. We show that the
effects on light and particles are qualitatively different and
discuss the consequences.
One of the surprising results is that lenses moving towards the
observer with highly relativistic velocities show no light
deflection in the limit although their total energy(=mass)
diverges.
Effects more relevant in astrophysics are expected in the case of a transversal motion of the lens which changes the observed redshift of the lensed source.
This talk summarises our paper on the subject. More technical details have been shown in a conference talk.
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Script last modified on 7 Sep 2010
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