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A detailed study of the nuclear region of Mrk 273
M. Bondi, D. Dallacasa, M. A. Peerez Torres +1
We present 5 GHz EVN+MERLIN observations of the nuclear region of the ultra luminous infrared galaxy Mrk 273. These observations confirms the detection, on the mas scale, of two re…
Polarization in CSS/GPS radio sources
D. Dallacasa
The polarisation properties of the intrinsically small (< 20 kpc) radio sources are briefly discussed. At centimetric and decimetric wavelengths, substantial polarised emission is…
A2255: the First Detection of Filamentary Polarized Emission in a Radio Halo
Federica Govoni, Matteo Murgia, Luigina Feretti +3
A deep radio observation of the A2255 cluster of galaxies has been carried out at 1.4 GHz with the Very Large Array synthesis telescope. Thanks to the excellent (u,v) coverage and…
High Frequency Peakers: young radio sources or flaring blazars?
S. Tinti, D. Dallacasa, G. De Zotti +2
We present new, simultaneous, multifrequency observations of 45 out of the 55 candidate High Frequency Peakers (HFP) selected by Dallacasa et al. (2000), carried out 3 to 4 years a…
Magnetic Fields and Faraday Rotation in Clusters of Galaxies
M. Murgia, F. Govoni, L. Feretti +5
We present a numerical approach to investigate the relationship between magnetic fields and Faraday rotation effects in clusters of galaxies. We can infer the structure and strengt…
Radio activity in major mergings
E. Zucca, T. Venturi, S. Giacintucci +2
Cluster mergings are expected to have an influence on the radio emission of the galaxy population. We present the results of a deep radio survey in the A3558 complex in the central…
Radio galaxies in cooling core clusters. Restarted activity in the nucleus of 3C317?
T. Venturi, D. Dallacasa, F. Stefanachi
We present the results of VLBA observations of the radio galaxy 3C317, associated with the cD galaxy UGC 09799 at the centre of the cooling core cluster of galaxies A2052. These ob…
Radio halos in merging clusters of galaxies
S. Giacintucci, T. Venturi, S. Bardelli +4
We present the preliminary results of 235 MHz, 327 MHz and 610 MHz observations of the galaxy cluster A3562 in the core of the Shapley Concentration. The purpose of these observati…