The angular broadening of radio sources by scattering in the interstellar medium.
Abstract
The variation with direction of interstellar scattering at MHz has been determined by two independent methods based on interplanetary scintillation measurements at MHz, presented here, and at MHz, already published. The scattering angle, which increases at low galactic latitudes, has a value of 0" 15 + o" o5 at MHz for the lines of sight perpendicular to the galactic plane. The effect of the scattering on the apparent angular diameters of OH and H2O maser sources is discussed.
- Publication:
-
Monthly Notices of the Royal Astronomical Society
- Pub Date:
- January 1976
- DOI:
- 10.1093/mnras/174.1.7
- Bibcode:
- 1976MNRAS.174....7D
- Keywords:
-
- Angular Distribution;
- Electromagnetic Scattering;
- Interstellar Extinction;
- Radio Sources (Astronomy);
- Astronomical Maps;
- Hydroxyl Emission;
- Interstellar Masers;
- Latitude;
- Scintillation;
- Very High Frequencies;
- Water;
- Astronomy