At https://phys.org/print440153496.html … scientists say they have solved the mysteroy as to why comets emit x-rays. Comets are regarded as cold objects whilst x-rays are normally associated with hot objects such as the sun or stars in general. However, in the solar system comets interact with the solar wind – and plasma. This creates a bow shock behind the comet. The key is therefore the Sun. The solar wind creates plasma turbulence and in turn this causes the electrons to become highly active and in this the bow shock plays a role, causing particles to speed up. Not exactly your electric universe solution but it should be remembered the point of the experiment was to test the mainstream theory. They have shown this model works.