Two supermassive black holes, like the ones found at the center of most galaxies, produce strong gravitational waves when they are coming together and merge during a galaxy collision. If they are surrounded by the expected magnetized circumbinary disk, the magnetic fields around them will be influenced by the binary dynamics. As a result, the system will produce two jets of electromagnetic radiation which can potentially be observable at large distances. This model, described numerically by Carlos Palenzuela (CITA), Luis Lehner (PI & Guelph) and Steve Liebling (LIU) and published in Science, gives to the astronomers and early warning about where to look for merging black holes and study gravitational waves.


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