3C58 is a remnant of a supernova observed on Earth in 1181 AD and is located in the direction of Cassiopeia; this XMM-Newton EPIC image shows the young, extremely bright and rapidly rotating neutron star (a so called pulsar, better visible in the bottom left inset) embedded in a surrounding synchrotron nebula of high-energy particles.
The complex X-ray structure at different scales can be seen in this EPIC X-ray image whose energy bands are colour coded as: red=0.3-1.0 keV, green=1.0-2.0 keV, blue=2.0-8.0 keV.
The different temperatures in the structure of the nebula are visible in the main EPIC X-ray image, where the soft (red) X-ray emission is located in the outer regions of the nebula, while the medium and hard emissions are more concentrated towards the center. In the field of view around the nebula, a number of point-like sources with different spectral properties are visible as well.
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