Notes on Cygnus A coronal lines, No. 2

RAEF & CNT, May 2004

During a visit to Sheffield from 17-19 May 2004, RAEF has done the following things on the Cyg_A coronal project:

• Collected the relevant literature as pdf files and labelled them as FirstauthorYear.pdf
• Started a paper in MNRAS style
• Looked carefully at the spatial distribution of the X-ray, radio and optical/NIR emission from the kpc-scale regions. This animated gif image shows overlays (from Ogle et al. 97 and Young et al. 02) on the HST/Keck optical image (from Fosbury et al. 99)The sequence is:
  1. BVRI image
  2. B [OIII] H-alpha image
  3. Ogle Pol map overlayed on (1)
  4. Young X-ray/[OIII] map overlayed on (1)
  5. Young X-ray/6cm map overlayed on (1)
  6. Ogle Pol map overlayed on (2)
  7. Young X-ray/[OIII] map overlayed on (2)
  8. Young X-ray/6cm map overlayed on (2)
  9. BVRI [OIII] H-alpha full composite image

Issues to discuss

• Look at velocity differences between coronal and lower ionization lines
• Is the soft X-ray emission absorbed - look at Young et al. paper?
• Get hold of the 2D Keck optical spectra
• Is there a scattered component in othe X-ray AGN? Look at NGC 1068
• Does a joint X-ray - coronal line model imply X-ray absorption edges in the direct view to the AGN?