Zobrazeno 1 - 10
of 567
pro vyhledávání: '"Fanti, R."'
We present results on global very long baseline interferometry (VLBI) observations at 327 MHz of eighteen compact steep-spectrum (CSS) and GHz-peaked spectrum (GPS) radio sources from the 3C and the Peacock & Wall catalogues. About 80 per cent of the
Externí odkaz:
http://arxiv.org/abs/2104.12804
Global VLBI observations at 5 GHz have been performed to study the source morphology in 10 compact steep-spectrum (CSS) sources selected from the Peacock & Wall catalogue with the aim of finding asymmetric structures produced by the interaction with
Externí odkaz:
http://arxiv.org/abs/1304.6261
The dying radio sources represent a very interesting and largely unexplored stage of the active galactic nucleus (AGN) evolution. They are considered to be very rare, and almost all of the few known ones were found in galaxy clusters. However, consid
Externí odkaz:
http://arxiv.org/abs/1210.6864
Compact steep-spectrum radio sources and giga-hertz peaked spectrum radio sources (CSS/GPS) are generally considered to be mostly young radio sources. In recent years we studied at many wavelengths a sample of these objects selected from the B3-VLA c
Externí odkaz:
http://arxiv.org/abs/1102.1619
Autor:
Murgia, M., Parma, P., Mack, K. -H., de Ruiter, H. R., Fanti, R., Govoni, F., Tarchi, A., Giacintucci, S., Markevitch, M.
We present the study of five `dying' nearby radio galaxies belonging to the WENSS minisurvey and to the B2 bright catalogs: WNB1734+6407, WNB1829+6911, WNB1851+5707, B2 0120+33, and B2 1610+29. These sources have been selected on the basis of their e
Externí odkaz:
http://arxiv.org/abs/1011.0567
The photometric, structural and kinematical properties of the centers of elliptical galaxies, harbor important information of the formation history of the galaxies. In the case of non active elliptical galaxies these properties are linked in a way th
Externí odkaz:
http://arxiv.org/abs/0910.0716
Autor:
Morganti, R., Peck, A. B., Oosterloo, T. A., van Moorsel, G., Capetti, A., Fanti, R., Parma, P., de Ruiter, H. R.
We present WSRT, VLA and VLBI observations of the HI absorption in the radio galaxy NGC 315. The main result is that two HI absorbing systems are detected against the central region. In addition to the known highly redshifted, very narrow component,
Externí odkaz:
http://arxiv.org/abs/0908.3951
We present new polarisation observations at 13 cm, acquired using the Westerbork Synthesis Radio Telescope (WSRT), of 65 sources, from the B3-VLA sample of Compact Steep-Spectrum sources. These new data are combined with our VLA polarisation data, at
Externí odkaz:
http://arxiv.org/abs/0806.1824
Autor:
Guidetti, D., Murgia, M., Govoni, F., Parma, P., Gregorini, L., de Ruiter, H. R., Cameron, R. A., Fanti, R.
The goal of this work is to put constraints on the strength and structure of the magnetic field in the cluster of galaxies A2382. We investigate the relationship between magnetic field and Faraday rotation effects in the cluster, using numerical simu
Externí odkaz:
http://arxiv.org/abs/0709.2652
The current generation of X-ray observatories like Chandra allows studies with very fine spatial details. It is now possible to resolve X-ray point sources projected into the cluster diffuse emission and exclude them from the analysis to estimate the
Externí odkaz:
http://arxiv.org/abs/0706.3272