Astronomy and Astrophysics – Astronomy
Scientific paper
Sep 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985apj...296...46s&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 296, Sept. 1, 1985, p. 46-59. Research supported by the National Astronomy
Astronomy and Astrophysics
Astronomy
221
Extragalactic Radio Sources, Flicker, Radio Spectra, Scintillation, Error Analysis, Histograms, Time Lag, Time Series Analysis
Scientific paper
Flicker of extragalactic sources was investigated by observing 14 flat and 20 steep spectrum sources at 1410 and 2380 MHz from the Arecibo Observatory on 20 successive days. The rms intensity variation of flat spectrum sources is, on average, higher than for steep spectrum sources. The variations are shown to have contributions on time scales ranging from at least as small as 1 - 2 days to greater than 20 days. The observed ratio of the flicker amplitude (1410:2380 MHz ≈ 1) is not consistent with a simple interpretation in terms of either "slow refractive" or "fast diffractive" interstellar scintillations. If the variations are intrinsic, they imply brightness temperatures in excess of the inverse Compton limit for an incoherent synchrotron source.
Cordes James M.
Heeschen David S.
Simonetti John H.
No associations
LandOfFree
Flicker of extragalactic radio sources at two frequencies 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 Flicker of extragalactic radio sources at two frequencies, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Flicker of extragalactic radio sources at two frequencies will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-798621