51 citations · 127 across the 5 of their papers we have counts for
1 paper · 2 filters
Heather Matheson, Samar Safi-Harb
(Abridged) In 1999, Chandra revealed a 150"-radius X-ray halo surrounding the 40"-radius PWN G21.5-0.9. A 2005 imaging study showed that the halo is limb-brightened, and suggested…