Astronomy and Astrophysics – Astrophysics
Scientific paper
Mar 1981
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981japa....2...43k&link_type=abstract
Journal of Astrophysics and Astronomy, vol. 2, Mar. 1981, p. 43-58.
Astronomy and Astrophysics
Astrophysics
16
Angular Resolution, Extragalactic Radio Sources, Flux Density, Quasars, Stellar Luminosity, Beams (Radiation), Doppler Effect, Spectrum Analysis
Scientific paper
A list has been compiled of 49 extragalactic sources, most of them identified with quasars, that appear to have a one-sided (D2 type) radio structure characterized by a single outer component displaced from a compact central (nuclear) component coincident with the optical object. The observed properties of a subsample of 28 D2 quasars that have an overall angular size larger than 5 arsec are briefly discussed and compared with those of normal (D1 type) double quasars. It is found that the central components in most D2 sources account for more than half the total flux density at high frequencies in contrast to the D1 quasars which generally have less than 20 per cent of their total flux density in a central component. This makes it very unlikely that D2 sources are just those D1s in which there is a large intrinsic difference in the flux densities or separations of the two outer components. The observed properties of D2 sources are easier to understand in the relativistic beaming interpretation in which their axes are inclined at smaller angles with the line of sight compared to D1 sources.
No associations
LandOfFree
Extragalactic sources with one-sided radio structure does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Extragalactic sources with one-sided radio structure, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Extragalactic sources with one-sided radio structure will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1791054