Hertzian Dipole

This is a semi-realistic concept taken from electromagnetism and applied to space art. In this artwork the planet in the center of the nebula supposedly acts as an antenna of electromagnetic radiation. Because of the planet's proximity to the nebula the gas clouds will be shaped by the radiating electric fields, resulting in the idealized ripples shown in this picture. Such dipole antennas are also called "Hertzian Dipoles". You can see in this animation how these electric fields theoretically move over time: http://www.didaktikonline.physik.uni-muenchen.de/programme/dipolstr/DipoleRadiation.html?m=110001
Note that the physics behind it are questionable as gravity is much stronger than electromagnetism on such scales. It's just for fun!