318-MHz variability of complete samples of extragalactic radio sources

Details 318-MHz variability of complete samples of extragalactic radio sources 318-MHz variability of complete samples of extragalactic radio sources

Nov 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981aj.....86.1604d&link_type=abstract

Astronomical Journal, vol. 86, Nov. 1981, p. 1604-1618.

Astronomy and Astrophysics

Astronomy

33

Extragalactic Radio Sources, Periodic Variations, Radiant Flux Density, Statistical Analysis, Brightness Temperature, Low Frequencies, Spectrum Analysis, Time Measurement

Scientific paper

It is found by a low-frequency variability survey, involving two- and three-epoch, 318-MHz observations of extragalactic sources in samples complete to 3 Jy at 1400 MHz and 1 Jy at 5000 MHz, that steep-spectrum sources do not seem to vary while all flat-spectrum sources exhibit low-frequency variability greater than 8% over about 5 yr. It is also found that the flat-spectrum sources with inverted spectra show the largest fractional variations, and that there is a correlation between the incidence of low-frequency variability and the determination that a source is an optically violent variable. These statistical properties are consistent with models which invoke radio and optical emission relativistic beaming.

Affiliated with

Also associated with

No associations

Rating

318-MHz variability of complete samples of extragalactic radio sources 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 318-MHz variability of complete samples of extragalactic radio sources, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and 318-MHz variability of complete samples of extragalactic radio sources will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-743388