SIMBAD references

1999A&A...345..769M - Astronomy and Astrophysics, volume 345, 769-777 (1999/5-3)

Synchrotron spectra and ages of compact steep spectrum radio sources.

MURGIA M., FANTI C., FANTI R., GREGORINI L., KLEIN U., MACK K.-H. and VIGOTTI M.

Abstract (from CDS):

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 105 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 ≃107 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.

Abstract Copyright:

Journal keyword(s): radiation mechanisms: non-thermal - radio continuum: galaxies

Simbad objects: 47

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2019.12.14-06:48:05

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