Absorption of Radio Waves in the Gum Nebula
Abstract
Free-free absorption by thermal electrons attenuates low frequency radio waves and such absorption will indicate the presence of ionized hydrogen. The Gum Nebula contains bright H-alpha emission regions and therefore it is not surprising that the region appears as an area of low brightness on low frequency continuum maps.
- Publication:
-
Publications of the Astronomical Society of Australia
- Pub Date:
- October 1973
- DOI:
- 10.1017/S1323358000013540
- Bibcode:
- 1973PASA....2..197C