The Northeastern Cygnus Loop
This image of the northeastern region of the Cygnus Loop supernova remnant shows a combination of optical and X-ray data. Red indicates filaments emitting in the light of hydrogen, green shows regions emitting in the light of twice-ionized oxygen, and the diffuse blue glow shows X-ray emission. Various combinations of these produce other colors. For instance, green filaments with surrounding X-ray (blue) emissions produce a turquoise result. Background stars, which do not emit in X-rays, look yellow (green + red). The white region at lower right is very bright in all three colors.
(PHOTO from J. Hester, J. Raymond, and W. Blair, 1994, Astrophysical Journal, Vol. 420, pg. 721.)
A further investigation of the region near the center of the above image has been done using the Hubble Space Telescope. You can view the images and find more information HERE.
Return to Bill Blair's Supernova Remnant page.
Return to Bill Blair's home page.