I think you are looking at the Mouse Pulsar Wind Nebula ("PWN"). Prettier X-ray and radio pictures, and animations : https://www.chandra.harvard.edu/photo/2004

I think you are looking at the Mouse Pulsar Wind Nebula ("PWN"). Prettier X-ray and radio pictures, and animations : https://www.chandra.harvard.edu/photo/2004/mouse/index.html https://www.chandra.harvard.edu/photo/2004/mouse/index.html A recent summary: https://ui.adsabs.harvard.edu/abs/2018ApJ...861....5K/abstract https://ui.adsabs.harvard.edu/abs/2018ApJ...861....5K/abstra... ("famous for its spectacular tail"). There is a link to the arxiv preprint below the abstract. Lots and lots of additional papers about The Mouse, with its conspicuously long tail, PWN G359.23-0.82, driven by its Vela-like pulsar J1747-2958. https://www.semanticscholar.org/paper/Heartbeat-of-the-Mouse%3A-A-Young-Radio-Pulsar-with-Camilo-Manchester/9d90e9a866d465bec0694dbed3bb8429c5c47660 https://www.semanticscholar.org/paper/Heartbeat-of-the-Mouse...