Astronomy and Astrophysics – Astronomy
Scientific paper
Aug 1983
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983apj...271...44s&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 271, Aug. 1, 1983, p. 44-50.
Astronomy and Astrophysics
Astronomy
21
Magnetic Flux, Radio Sources (Astronomy), Very Long Base Interferometry, Flux Density, Quasars, Red Shift
Scientific paper
Very Long Baseline Interferometer observations at 5 and 10.6 GHz, together with multifrequency flux density measurements, are reported for the compact radio sources 0552 + 398 and 1848 + 283. Both sources are characterized by sharply peaked spectra with maxima in the 5-10 GHz range and are thus good approximations to the theoretical ideal of a homogeneous synchrotron source. The data are used to determine the magnetic field strengths in these sources, which have been compared with the 'equipartition magnetic field' estimates. In the source 0552 + 398, the field is weaker (by a factor of about 100) than the equipartition value. On the other hand, the observations of 1848 + 283 are consistent with this source possessing roughly equal energy densities in the magnetic field and relativistic electrons.
Benson James M.
Mutel Robert L.
Spangler Steven R.
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