On the double-plane plasma lensing

Understand

Plasma lensing is the refraction of low-frequency electromagnetic rays due to cold free electrons in the universe.

• For sources at a cosmological distance, there is observational evidence of elongated, complex plasma structures along the line of sight requiring a multi-lens-plane description.
• To investigate the limits of single-plane plasma lensing, we set up a double-plane lens with a projected Gaussian electron density in each lens plane.
• We compare double-plane scenarios with corresponding effective single-plane configurations.