Zobrazeno 1 - 10
of 3 874
pro vyhledávání: '"Bonafede, A."'
Autor:
Pignataro, G. V., Bonafede, A., Bernardi, G., Balboni, M., Vazza, F., van Weeren, R. J., Ubertosi, F., Cassano, R., Brunetti, G., Botteon, A., Venturi, T., Akamatsu, H., Drabent, A., Hoeft, M.
The clusters Abell 2061 and Abell 2067 in the Corona Borealis supercluster have been studied at different radio frequencies and are both known to host diffuse radio emission. The aim of this work is to investigate the radio emission in between them,
Externí odkaz:
http://arxiv.org/abs/2409.15412
We present a weak lensing analysis of the galaxy cluster Abell 2390 at z = 0.23 using second moment shape measurements made in 411 short 60s exposures. The exposures are obtained in three broadband photometric filters (g, r, i) using WIYN-ODI. Shape
Externí odkaz:
http://arxiv.org/abs/2409.12119
Autor:
De Rubeis, E., Stuardi, C., Bonafede, A., Vazza, F., van Weeren, R. J., de Gasperin, F., Brüggen, M.
In this paper, we investigate the polarization properties of the double radio relics in PSZ2 G096.88+24.18 using the rotation measure synthesis, and try to constrain the characteristics of the magnetic field that reproduce the observed beam depolariz
Externí odkaz:
http://arxiv.org/abs/2408.08603
Autor:
Osinga, Erik, van Weeren, Reinout J., Rudnick, Lawrence, Andrade-Santos, Felipe, Bonafede, Annalisa, Clarke, Tracy, Duncan, Kenda, Giacintucci, Simona, Röttgering, Huub J. A.
Magnetic fields remain an enigmatic part of the content of galaxy clusters. Faraday rotation and depolarisation of extragalactic radio sources are useful probes, but the limited availability of polarised radio sources necessitates stacking clusters t
Externí odkaz:
http://arxiv.org/abs/2408.07178
Autor:
Ubertosi, Francesco, Giroletti, Marcello, Gitti, Myriam, Biava, Nadia, De Rubeis, Emanuele, Bonafede, Annalisa, Feretti, Luigina, Bondi, Marco, Bruno, Luca, Liuzzo, Elisabetta, Ignesti, Alessandro, Brunetti, Gianfranco
We present a multi-frequency (144 MHz - 9 GHz) and multi-scale (5 pc - 50 kpc) investigation of the central radio galaxy in RBS 797, by means of JVLA, LOFAR (with international stations), e-Merlin, VLBA and EVN data. We investigate the morphological
Externí odkaz:
http://arxiv.org/abs/2405.08079
Autor:
Pignataro, G. V., Bonafede, A., Bernardi, G., de Gasperin, F., Brunetti, G., Pasini, T., Vazza, F., Biava, N., de Jong, J. M. G. H. J., Cassano, R., Botteon, A., Brüggen, M., Röttgering, H. J. A., van Weeren, R. J., Shimwell, T. W.
Publikováno v:
A&A 685, L10 (2024)
Recent low-frequency radio observations at 140 MHz discovered a 3 Mpc-long bridge of diffuse emission connecting the galaxy clusters Abell 0399 and Abell 0401. We present follow-up observations at 60 MHz to constrain the spectral index of the bridge,
Externí odkaz:
http://arxiv.org/abs/2405.00772
Autor:
Biava, N., Bonafede, A., Gastaldello, F., Botteon, A., Brienza, M., Shimwell, T. W., Brunetti, G., Bruno, L., Rajpurohit, K., Riseley, C. J., van Weeren, R. J., Rossetti, M., Cassano, R., De Gasperin, F., Drabent, A., Rottgering, H. J. A., Edge, A. C., Tasse, C.
Radio observations of a few cool-core galaxy clusters have revealed the presence of diffuse emission on cluster scales, similar to what was found in merging clusters in the form of radio halos. These sources might suggest that a minor merger, while n
Externí odkaz:
http://arxiv.org/abs/2403.09802
Autor:
Riseley, C. J., Bonafede, A., Bruno, L., Botteon, A., Rossetti, M., Biava, N., Bonnassieux, E., Loi, F., Vernstrom, T., Balboni, M.
Publikováno v:
A&A 686, A44 (2024)
Clusters of galaxies are turbulent environments, whether merging systems with a turbulent intracluster medium (ICM) or relaxed systems sloshing within the potential well. In many such clusters, diffuse radio sources associated with the ICM are found:
Externí odkaz:
http://arxiv.org/abs/2403.00414
Autor:
Balboni, M., Gastaldello, F., Bonafede, A., Botteon, A., Bartalucci, I., Bourdin, H., Brunetti, G., Cassano, R., De Grandi, S., De Luca, F., Ettori, S., Ghizzardi, S., Gitti, M., Iqbal, A., Johnston-Hollitt, M., Lovisari, L., Mazzotta, P., Molendi, S., Pointecouteau, E., Pratt, G. W., Riva, G., Rossetti, M., Rottgering, H., Sereno, M., van Weeren, R. J., Venturi, T., Veronesi, I.
The connection between the thermal and non-thermal properties in galaxy clusters hosting radio halos seems fairly well established. However, a comprehensive analysis of such a connection has been made only for integrated quantities (e.g. $L_X - P_{ra
Externí odkaz:
http://arxiv.org/abs/2402.18654
Autor:
Murgia, M., Govoni, F., Vacca, V., Loi, F., Feretti, L., Giovannini, G., Melis, A., Concu, R., Carretti, E., Poppi, S., Valente, G., Bonafede, A., Bernardi, G., Boschin, W., Brienza, M., Clarke, T. E., de Gasperin, F., Ensslin, T. A., Ferrari, C., Gastaldello, F., Girardi, M., Gregorini, L., Johnston-Hollitt, M., Orru', E., Parma, P., Perley, R. A., Taylor, G. B, Marchegiani, P.
We present deep total intensity and polarization observations of the Coma cluster at 1.4 and 6.6 GHz performed with the Sardinia Radio Telescope. By combining the single-dish 1.4 GHz data with archival Very Large Array observations we obtain new imag
Externí odkaz:
http://arxiv.org/abs/2402.07306