Which classification of supernova remnant features both a shell structure and a central pulsar wind nebula (PWN)?
Answer
Composite supernova remnant
The composite supernova remnant classification is specifically reserved for objects that exhibit two key features simultaneously: an overall shell structure formed by the main shock interaction with the ISM, and a distinct central nebula known as a pulsar wind nebula (PWN). The presence of the PWN indicates that the core collapse resulted in a fast-spinning neutron star (a pulsar) whose high-speed rotation and powerful magnetic field are actively powering and influencing the structure of the central region of the remnant, demonstrating that the central engine remains active.
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What Is A Supernova Remnant (SNR)? - Physics Frontier - YouTube
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