1999/04/21 by M. Murgia, C. Fanti, R. Fanti +5 · 2 citations
Physics and Astronomy · #Astronomy and Astrophysical Research #Astrophysics and Cosmic Phenomena #Radio Astronomy Observations and Technology #astro-ph
paper · pdf · doi:10.1016/s1387-6473(01)00200-7
published as New Astron.Rev. 46 (2002) 307-311 · 10 pages, 6 figures, 2 tables, accepted for publication in Astron. & Astrophys.; typos corrected; gzipped postscript version also available at: http://multivac.jb.man.ac.uk:8000/ceres/papers/papers.html http://gladia.astro.rug.nl:8000/ceres/papers/papers.html
arxiv created 1999/04/21 · openalex publication_date 2002/05/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
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 0.1 Myears, 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 about 10 Myears, their equipartition magnetic field would be systematically decreased by a factor of more than 20. To complete the sample used in this work, we conducted observations at 230 GHz with the IRAM 30-m telescope of those sources which did not have such high-frequency observations up to now.