[ITAL]Chandra[/ITAL] Observations of the Crab-like Supernova Remnant G21.5โ0.9
[ITAL]Chandra[/ITAL] Observations of the Crab-like Supernova Remnant G21.5โ0.9
Chandra observations of the Crab-like supernova remnant G21.5-0.9 reveal a compact central core and spectral variations indicative of synchrotron burn-off of higher energy electrons in the inner nebula. The central core is slightly extended, perhaps indicating the presence of an inner wind-shock nebula surrounding the pulsar. No pulsations are observed โฆ