منابع مشابه
2 HI Absorption in GPS / CSS Sources
Combining our own observations with data from the literature, we consider the incidence of H I absorption in Gigahertz Peaked Spectrum (GPS) and Compact Steep Spectrum (CSS) sources. Here we present our preliminary results, where we find that the smaller GPS sources (< 1 kpc) on average have larger H I column densities than the larger CSS sources (> 1 kpc). Both a spherical and an axi-symmetric...
متن کاملPolarisation in CSS/GPS radio sources
The polarisation properties of the intrinsically small (< 20 kpc) radio sources are briefly discussed. At centimetric and decimetric wavelengths, substantial polarised emission is often detected in quasars and, at a lower level, in radio sources identified with galaxies with projected linear sizes in excess of a few kpc. The projected linear size at which some polarised emission is detected dec...
متن کاملX-ray Emission from GPS and CSS Sources
Many X-ray observations of GigaHertz Peaked Spectrum and Compact Steep Spectrum sources have been made with Chandra X-ray Observatory and XMM-Newton Observatory over the last few years. The X-ray spectra contribute the important information to the total energy distribution of the compact radio sources. In addition the spatial resolution of Chandra allows for studies of the X-ray morphology of t...
متن کاملFast outflows in broad absorption line quasars and their connection with CSS/GPS sources
1 Max Planck Institute for Radio Astronomy, Auf dem Hügel 69, D-53121 Bonn, Germany 2 INAF Istituto di Radioastronomia, Via P. Gobetti 101, I-40129 Bologna, Italy 3 European Southern Observatory, Alonso de Córdova 3107, Vitacura, Casilla 19001, Santiago de Chile, Chile 4 Netherlands Institute for Radio Astronomy, Postbus 2, 7990 AA, Dwingeloo, The Netherlands 5 Kapteyn Astronomical Institute, R...
متن کاملSpectral Ages of CSOs and CSS Sources
This paper deals with the spectral ageing study of a representative sample of compact symmetric objects (CSOs) and compact steep spectrum (CSS) sources. Observations reveal a distinctive high-frequency steepening of the radio spectra of many of these sources. The existence of such a spectral feature is expected or may be naturally interpreted in terms of radiative ageing of synchrotron emitting...
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ژورنال
عنوان ژورنال: Publications of the Astronomical Society of Australia
سال: 2003
ISSN: 1323-3580,1448-6083
DOI: 10.1071/as02042