OBSERVATIONS OF THE CALIFORNIA INSTITUTE OF TECHNOLOGY RADIO OBSERVATORY, OWENS VALLEY, CALIFORNIA 1961. 6. THE RADIO SPECTRUM OF SUPERNOVA REMNANTS
Abstract
960 Mc/s observations of thirteen galactic sources generally assumed to be supernova remnants, are coupled with previous observations at other frequencies to derive spectral indices.Although several values of spectral index are found in the neighborhood of zero, arguments are presented that free-free transitions are not the primary cause of the radio emission. An interpretation of the relatively large range of spectral indices is suggested on the basis of an evolutionary sequence in which young, bright objects with relatively steep spectra gradually evolve into old, faint objects with flat or inverted spectra. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 1961
- Accession Number
- AD0264673
Entities
People
- D.e. Harris
Organizations
- California Institute of Technology