G54.1+0.3

Radio: Filled-centre core, with possible faint diffuse emission.
X-ray: Centrally concentrated, with more extended diffuse emission.
Point sources: Central pulsar.
Distance: HI absorption suggests 4.9, association with CO suggests 8.2 kpc, and optical absorption suggests 6.3 kpc.

References:

Last updated: 11 Apr 2019


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Dave Green/Cambridge, UK/