Radio galaxies and quasars
Observations of radio emission from radio galaxies and quasars are reviewed and possible emission mechanisms are discussed. Consideration is given to the observed structure and energy of the giant radio galaxies, very rapid variations in the flux density and size of compact radio sources, evidence of superluminal expansion in the quasars 3C 273, 3C 279 and 3C 345 and the Seyfert galaxy 3C 120 and the stationary sources NGC 1275 (an active galaxy) and 4C 39.25 (a quasar). The physical interpretation of the apparent superluminal motion observed in some of these sources in terms of the relativistic expansion of the synchrotron source aligned nearly along the line of sight is discussed, and problems with this model are indicated.
- OSTI ID:
- 5045684
- Report Number(s):
- CONF-781245-
- Journal Information:
- Ann. N.Y. Acad. Sci.; (United States), Vol. 336; Conference: 13. Texas conference on relativistic astrophysics, Munich, F.R. Germany, 14 Dec 1978
- Country of Publication:
- United States
- Language:
- English
Similar Records
Nuclear structure in the quasar 3C 345 and the Seyfert galaxy NGC 1275
VLA and VLBI observations of core-dominated quasars
Related Subjects
GENERAL PHYSICS
QUASARS
RADIO GALAXIES
GALAXY NUCLEI
LUMINOSITY
RADIANT FLUX DENSITY
RADIO NOISE
RADIOASTRONOMY
SEYFERT GALAXIES
SYNCHROTRON RADIATION
ASTRONOMY
BREMSSTRAHLUNG
COSMIC RADIO SOURCES
ELECTROMAGNETIC RADIATION
FLUX DENSITY
GALAXIES
NOISE
OPTICAL PROPERTIES
PHYSICAL PROPERTIES
RADIATIONS
RADIOWAVE RADIATION
640103* - Astrophysics & Cosmology- Quasi-Stellar
Radio
& X-Ray Sources- (-1987)