An Unusual Radio Loop in the Edge-on Seyfert Galaxy NGC 5506
Abstract
Images at 6 cm and 2 cm of the 'edge-on' Seyfert galaxy NGC 5506 were obtained with about 0.4-arcsec resolution. Both images show an unresolved core (less then 40 pc diameter) and a diffuse halo (about 300 pc diameter). A loop (about 100 pc diameter) that is too bright to be a normal supernova remnant appears in the 6-cm image. The loop's spectral index indicates that the radio continuum emission is nonthermal. It is suggested that the loop might be a bubble of hot plasma rising from the nucleus or a magnetically dominated coronal arch.
- Publication:
-
The Astrophysical Journal
- Pub Date:
- February 1987
- DOI:
- 10.1086/184828
- Bibcode:
- 1987ApJ...313L..43W
- Keywords:
-
- Radio Galaxies;
- Seyfert Galaxies;
- Astronomical Maps;
- Continuous Radiation;
- Galactic Nuclei;
- High Temperature Plasmas;
- Loops;
- Astrophysics;
- GALAXIES: SEYFERT;
- RADIO SOURCES: GALAXIES