Using NASA’s Chandra spacecraft, European astronomers have detected a diffuse X-ray emission around an ultraluminous X-ray pulsar in the galaxy NGC 5907. The newly detected emission could be an expanding nebula powered by the wind of the pulsar. The finding is detailed in a paper published October 25 on the arXiv pre-print server.
Source:
https://phys.org/news/2019-11-diffuse-x-ray-emission-ultraluminous-pulsar.html