On Scattering of Electromagnetic Waves by a Wormhole
  We consider scattering of a plane electromagnetic wave by a wormhole. It is found that the scattered wave is partially depolarized and has a specific interference picture depending on parameters of the wormhole and the distance to the observer. It is proposed that such features can be important in the direct search of wormholes. 
A.A. Kirillov, E.P. Savelova
astro-ph.CO astro-ph.IM gr-qc