Radio variability properties for radio sources

Details Radio variability properties for radio sources Radio variability properties for radio sources

2007-01-18

arxiv.org/abs/astro-ph/0701540v1

Astronomy and Astrophysics

Astrophysics

28 pages, 6 figures, 3 tables, A&A in press

Scientific paper

10.1051/0004-6361:20054775

In this paper, we used the database of the university of Michigan Radio Astronomy Observatory (UMRAO) at three (4.8 GHz, 8.0 GHZ, and 14.5 GHz) radio frequency to analyze the radio light curves by the power spectral analysis method in search of possible periodicity. The analysis results showed that the radio sources display astrophysically meaningful periodicity ranging from 2.2 to 20.8 years in their light curves at the three frequencies. We also calculated the variability parameters and investigated the correlations between the variability parameter and the flux density. For the variability parameters, we found that the parameters at higher frequency are higher than those in the lower frequency. In addition, the variability parameters of BL Lacertae objects are larger than those of flat-spectrum radio quasars. suggesting that they are more variable than flat spectrum radio quasars.

Affiliated with

Also associated with

No associations

Rating

Radio variability properties for 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 Radio variability properties for radio sources, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Radio variability properties for radio sources will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-260661