NASA/IPAC EXTRAGALACTIC DATABASE
Date and Time of the Query: 2019-06-20 T01:04:22 PDT
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For refcode 1999A&A...345..769M:
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Copyright by European Southern Observatory (ESO). Reproduced by permission
1999A&A...345..769M Synchrotron spectra and ages of compact steep spectrum radio sources. MURGIA M., FANTI C., FANTI R., GREGORINI L., KLEIN U., MACK K.-H., VIGOTTI M. Received 7 January 1999/Accepted 12 March 1999 Abstract: The high-frequency integrated spectra of Compact Steep Spectrum (CSS) sources show breaks with a moderate spectral steepening well fitted by continuous injection synchrotron spectra. In lobe-dominated CSS sources the radiative ages deduced by the synchrotron theory are in the range of up to 10^5^ years, if equipartition magnetic fields are assumed. These radiative ages are well correlated with the source size indicating that the CSS sources are young. In order to maintain the frustration scenario, in which the sources lifetimes are =~10^7^ years, their equipartition magnetic field would be systematically decreased by a factor > 20. To complete the sample used in this work, we conducted observations at 230GHz with the IRAM 30-m telescope of those sources which did not have such high-frequency observations up to now. Key words: radiation mechanisms: non-thermal - radio continuum: galaxies
Retrieve 47 NED objects in this reference.
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