GALACTIC HYDROGEN ABSORPTION AT 21 CM WAVELENGTH IN THE DIRECTION OF VIRGO A,
Abstract
The 21 cm optical depth in the direction of Virgo A is 0.017 plus or minus 0.003 near the velocity of the peak of the galactic background emission, and the corresponding gas temperature lies within the range 180 - 460 degrees Kelvin. In the negative-velocity wing of the emission profile the optical depth is less than 0.002 which indicates a minimum gas temperature of 600K.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 1970
- Accession Number
- AD0711300
Entities
People
- A. R. Thompson
- G. L. Verschuur
- M. P. Hughes
- R. S. Colvin
Organizations
- California Institute of Technology