This image?
It's an image taken of Tycho’s Star, the remnants of a 1572 Supernova seen by Tycho Brahe back in 1572. This is a false color image constructed by data obtained in ~2005 by the Chandra 20" X-ray telescope on the Advanced X-ray Astrophysics Facility Satellite.
"In this image, Tycho’s supernova has two shock waves (the high-energy filaments, shown in blue), and the cloud of debris (lower-energy x-rays, shown in green and red) is not lagging behind. Measurements indicate that the blue x-rays are “non-thermal,” which means that they’re not coming from “hot gas.” (The million-degree temperature is not a direct measurement but is calculated according to how hot a gas must be to emit x-rays with the observed energy.)"Conventional astronomers think that they can adjust the theory to make the outside shock wave accelerate the nuclei of atoms to cosmic ray energies. Then if they see the blue filaments and the close-following debris as the results of this acceleration, looking and seeing may again harmonize.
"But what else could it be? Plasma theory explains supernovas as stars that develop instabilities in the galactic Birkeland currents driving them. In the same way that an unstable double layer (DL) on the Sun explodes into a flare, a DL that encompasses an entire star explodes into a supernova. The energy is released in the acceleration of ions, primarily along the axis of the current, and in non-thermal radiation, especially radio and x-ray emission." read more at: — Tycho's Star in Theory and Practice — Thunderbolts.info