Astronomy and Astrophysics – Astrophysics
Scientific paper
Nov 1980
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980natur.288...66l&link_type=abstract
Nature, vol. 288, Nov. 6, 1980, p. 66-69.
Astronomy and Astrophysics
Astrophysics
29
Astrophysics, Extragalactic Radio Sources, Microwave Spectra, Quasars, Radio Galaxies, Radio Interferometers, Astronomical Maps, Astronomical Models, Axes Of Rotation, Peculiar Galaxies, Telescopes
Scientific paper
Observations of rotationally symmetric structures within the extragalactic radio sources 3C 196 to 3C 305 are presented. The sources were mapped based on observations at a frequency of 408 MHz obtained by four telescopes of the Multi-Telescope Radio-Linked Interferometer at Jodrell Bank with a resolution of approximately 1 arcsec. The observed symmetries of radio emission for both the quasar 3C 196 and the Sa peculiar galaxy 3C 305, together with the inferred steep spectral indices of their extended components, are shown to suggest that the axes of the radio sources have changed their orientation relative to the medium in which the sources are embedded. Considerations of source models allow the estimation of time scales of greater than 1 million years and greater than 5 million years for 3C 196 and 3C 305, respectively, which are much shorter than those obtained for larger sources. The rotation of the source axis also imposes constraints on source mechanism.
Lonsdale Colin J.
Morison Ian
No associations
LandOfFree
Rotationally symmetric structure in two 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 Rotationally symmetric structure in two extragalactic radio sources, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Rotationally symmetric structure in two extragalactic radio sources will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1391949