Journal article
VLBI observations of the radio sources 0552+398 and 1848+283: measurements of the departure from equipartition
The Astrophysical journal, Vol.271(1), pp.44-50
1983
DOI: 10.1086/161174
Abstract
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.
Details
- Title: Subtitle
- VLBI observations of the radio sources 0552+398 and 1848+283: measurements of the departure from equipartition
- Creators
- S. R Spangler - National radio astronomy obsR. L Mutel - National radio astronomy obsJ. M Benson - National radio astronomy obs
- Resource Type
- Journal article
- Publication Details
- The Astrophysical journal, Vol.271(1), pp.44-50
- DOI
- 10.1086/161174
- ISSN
- 0004-637X
- eISSN
- 1538-4357
- Publisher
- University of Chicago Press
- Language
- English
- Date published
- 1983
- Academic Unit
- Physics and Astronomy
- Record Identifier
- 9984199684002771
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