Interstellar Clouds by Searchlight
Abstract
Interpretation of high-resolution observations of absorption by interstellar clouds of radiation from extragalactic sources should include the effect of the Earth's motion with respect to the source. High-resolution H I absorption profiles that are not heavily blended have been published for eight sources. New observations of these sources may show temporal variations that are at least in part due to the Earth's motion, and that can lead to estimates of the tiny-scale structure of the clouds.
- Publication:
-
The Astronomical Journal
- Pub Date:
- April 2009
- DOI:
- 10.1088/0004-6256/137/4/3920
- Bibcode:
- 2009AJ....137.3920D
- Keywords:
-
- ISM: general;
- ISM: structure;
- radio lines: ISM;
- techniques: radar astronomy