Computer Science – Sound
Scientific paper
Jul 1984
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984apj...282..402b&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 282, July 15, 1984, p. 402-411.
Computer Science
Sound
17
Extragalactic Radio Sources, Linear Polarization, Microwave Sounding, Particle Flux Density, Variability, Bl Lacertae Objects, Crab Nebula, Radio Galaxies
Scientific paper
Measurements of 87 GHz of the linear polarization and total flux density of 16 active extragalactic sources are presented. The observations were made over a 7 month period with time resolution of days to weeks for some sources. Two rapid and closely spaced outbursts with time scales of about 1 week were seen in OJ 287. These outbursts were characterized by both rapid rises and rapid falls in the flux density and as such differed from most previously observed rapid variations, which usually involve only dropouts in the flux density. For 3C 345, variations in the polarization may indicate the propagation of radiating particles along a jet in which the order and direction of the magnetic field changes with distance along the jet. No source was seen to undergo large-amplitude linear rotation of polarization position angle with time. Implications of these results, and the results for other sources, are discussed.
Barvainis Richard
Predmore Read C.
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