Zobrazeno 1 - 10
of 876
pro vyhledávání: '"Cassano, R"'
Autor:
van Weeren, R. J., Timmerman, R., Vaidya, V., Gendron-Marsolais, M. -L., Botteon, A., Roberts, I. D., Hlavacek-Larrondo, J., Bonafede, A., Brüggen, M., Brunetti, G., Cassano, R., Cuciti, V., Edge, A. C., Gastaldello, F., Groeneveld, C., Shimwell, T. W.
The Perseus cluster is the brightest X-ray cluster in the sky and is known as a cool-core galaxy cluster. Being a very nearby cluster, it has been extensively studied. This has provided a comprehensive view of the physical processes that operate in t
Externí odkaz:
http://arxiv.org/abs/2410.02863
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
Autor:
Pasini, T., de Gasperin, F., Brüggen, M., Cassano, R., Botteon, A., Brunetti, G., Edler, H. W., van Weeren, R. J., Cuciti, V., Di Gennaro, T. Shimwell. G., Gaspari, M., Hardcastle, M., Rottgering, H. J. A., Tasse, C.
Publikováno v:
A&A 689, A218 (2024)
A fraction of galaxy clusters harbor diffuse radio sources known as radio halos. The currently adopted scenario for their formation is based on second-order Fermi re-acceleration of seed electrons that is driven by merger-driven turbulence in the int
Externí odkaz:
http://arxiv.org/abs/2406.12005
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:
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:
Lusetti, G., de Gasperin, F., Cuciti, V., Brüggen, M., Spinelli, C., Edler, H., Brunetti, G., van Weeren, R. J., Botteon, A., Di Gennaro, G., Cassano, R., Tasse, C., Shimwell, T. W.
Low-frequency radio observations show an increasing number of radio galaxies located in galaxy clusters that display peculiar morphologies and spectral profiles. This is the result of the dynamical interaction of the galaxy with the surrounding mediu
Externí odkaz:
http://arxiv.org/abs/2401.04710
Autor:
Campitiello, M. G., Bonafede, A., Botteon, A., Lovisari, L., Ettori, S., Brunetti, G., Gastaldello, F., Rossetti, M., Cassano, R., Ignesti, A., van Weeren, R. J., Brüggen, M., Hoeft, M.
In this work, we investigated the interplay between the X-ray and radio emission of the cluster PSZ2G113.91-37.01 (z = 0.371) using the high-quality XMM-Newton observations of the CHEX-MATE project, and the images of the LoTSS-DR2. The cluster is und
Externí odkaz:
http://arxiv.org/abs/2310.03645
Autor:
Bruno, L., Botteon, A., Shimwell, T., Cuciti, V., de Gasperin, F., Brunetti, G., Dallacasa, D., Gastaldello, F., Rossetti, M., van Weeren, R. J., Venturi, T., Russo, S. A., Taffoni, G., Cassano, R., Biava, N., Lusetti, G., Bonafede, A., Ghizzardi, S., De Grandi, S.
Publikováno v:
A&A 678, A133 (2023)
Turbulence introduced into the intra-cluster medium (ICM) through cluster merger events transfers energy to non-thermal components, and can trigger the formation of diffuse synchrotron radio sources. Typical diffuse sources in the forms of giant radi
Externí odkaz:
http://arxiv.org/abs/2308.07603
Autor:
Riseley, C. J., Biava, N., Lusetti, G., Bonafede, A., Bonnassieux, E., Botteon, A., Loi, F., Brunetti, G., Cassano, R., Osinga, E., Rajpurohit, K., Rottgering, H. J. A., Shimwell, T., Timmerman, R., van Weeren, R. J.
Many relaxed cool-core clusters host diffuse radio emission on scales of hundreds of kiloparsecs: mini-haloes. However, the mechanism responsible for generating them, as well as their connection with central active galactic nuclei, is elusive and man
Externí odkaz:
http://arxiv.org/abs/2308.01464