The left image is from Chandra X-ray Observatory data. Mira A (right) is an AGB star that underwent an X-ray burst. Mira B (left) is pulling matter from Mira A into an accretion disk around Mira B. The right image is an artist's representation of the Mira AB system.
X-ray: NASA/CXC/SAO/M. Karovska et al.; Illustration: CXC/M.Weiss