Search Results - "de Gasperin, F."

Diffuse Radio Emission from Galaxy Clusters by van Weeren, R. J., de Gasperin, F., Akamatsu, H., Brüggen, M., Feretti, L., Kang, H., Stroe, A., Zandanel, F.

“…In a growing number of galaxy clusters diffuse extended radio sources have been found. These sources are not directly associated with individual cluster…”
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A radio ridge connecting two galaxy clusters in a filament of the cosmic web by Govoni, F, Orrù, E, Bonafede, A, Iacobelli, M, Paladino, R, Vazza, F, Murgia, M, Vacca, V, Giovannini, G, Feretti, L, Loi, F, Bernardi, G, Ferrari, C, Pizzo, R F, Gheller, C, Manti, S, Brüggen, M, Brunetti, G, Cassano, R, de Gasperin, F, Enßlin, T A, Hoeft, M, Horellou, C, Junklewitz, H, Röttgering, H J A, Scaife, A M M, Shimwell, T W, van Weeren, R J, Wise, M

“…Galaxy clusters are the most massive gravitationally bound structures in the Universe. They grow by accreting smaller structures in a merging process that…”
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Merging Cluster Collaboration: A Panchromatic Atlas of Radio Relic Mergers by Golovich, N., Dawson, W. A., Wittman, D. M., Weeren, R. J. van, Andrade-Santos, F., Jee, M. J., Benson, B., Gasperin, F. de, Venturi, T., Bonafede, A., Sobral, D., Ogrean, G. A., Lemaux, B. C., Brada, M., Brüggen, M., Peter, A.

“…Golovich et al. present an optical imaging and spectroscopic survey of 29 radio relic merging galaxy clusters. In this paper, we study this survey to identify…”
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The Coma Cluster at LOFAR Frequencies. II. The Halo, Relic, and a New Accretion Relic by Bonafede, A., Brunetti, G., Rudnick, L., Vazza, F., Bourdin, H., Giovannini, G., Shimwell, T. W., Zhang, X., Mazzotta, P., Simionescu, A., Biava, N., Bonnassieux, E., Brienza, M., Brüggen, M., Rajpurohit, K., Riseley, C. J., Stuardi, C., Feretti, L., Tasse, C., Botteon, A., Carretti, E., Cassano, R., Cuciti, V., Gasperin, F. de, Gastaldello, F., Rossetti, M., Rottgering, H. J. A., Venturi, T., Weeren, R. J. van

“…Abstract We present LOw Frequency ARray observations of the Coma Cluster field at 144 MHz. The cluster hosts one of the most famous radio halos, a relic, and a…”
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A new double radio relic in PSZ1 G096.89+24.17 and a radio relic mass–luminosity relation by de Gasperin, F., van Weeren, R. J., Brüggen, M., Vazza, F., Bonafede, A., Intema, H. T.

“…Radio relics are diffuse synchrotron sources in galaxy clusters that are believed to trace large-scale shock waves. We have discovered a new double radio relic…”
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Particle re-acceleration and Faraday-complex structures in the RXC J1314.4−2515 galaxy cluster by Stuardi, C, Bonafede, A, Wittor, D, Vazza, F, Botteon, A, Locatelli, N, Dallacasa, D, Golovich, N, Hoeft, M, van Weeren, R J, Brüggen, M, de Gasperin, F

“…ABSTRACT Radio relics are sites of electron (re)acceleration in merging galaxy clusters but the mechanism of acceleration and the topology of the magnetic…”
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Deep Low-frequency Radio Observations of A2256. I. The Filamentary Radio Relic by Rajpurohit, K., van Weeren, R. J., Hoeft, M., Vazza, F., Brienza, M., Forman, W., Wittor, D., Domínguez-Fernández, P., Rajpurohit, S., Riseley, C. J., Botteon, A., Osinga, E., Brunetti, G., Bonnassieux, E., Bonafede, A., Rajpurohit, A. S., Stuardi, C., Drabent, A., Brüggen, M., Dallacasa, D., Shimwell, T. W., Röttgering, H. J. A., Gasperin, F. de, Miley, G. K., Rossetti, M.

“…Abstract We present deep and high-fidelity images of the merging galaxy cluster A2256 at low frequencies using the upgraded Giant Metrewave Radio Telescope…”
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A powerful double radio relic system discovered in PSZ1 G108.18-11.53: evidence for a shock with non-uniform Mach number? by de Gasperin, F., Intema, H. T., van Weeren, R. J., Dawson, W. A., Golovich, N., Wittman, D., Bonafede, A., Brüggen, M.

“…Diffuse radio emission in the form of radio haloes and relics has been found in a number of merging galaxy clusters. These structures indicate that shock and…”
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LOFAR discovery of a double radio halo system in Abell 1758 and radio/X-ray study of the cluster pair by Botteon, A, Shimwell, T W, Bonafede, A, Dallacasa, D, Brunetti, G, Mandal, S, van Weeren, R J, Brüggen, M, Cassano, R, de Gasperin, F, Hoang, D N, Hoeft, M, Röttgering, H J A, Savini, F, White, G J, Wilber, A, Venturi, T

“…Abstract Radio haloes and radio relics are diffuse synchrotron sources that extend over Mpc-scales and are found in a number of merger galaxy clusters. They…”
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An image-based search for pulsars among Fermi unassociated LAT sources by Frail, D A, Ray, P S, Mooley, K P, Hancock, P, Burnett, T H, Jagannathan, P, Ferrara, E C, Intema, H T, de Gasperin, F, Demorest, P B, Stovall, K, McKinnon, M M

“…Abstract We describe an image-based method that uses two radio criteria, compactness, and spectral index, to identify promising pulsar candidates among Fermi…”
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LOFAR-Boötes: properties of high- and low-excitation radio galaxies at 0.5 < z < 2.0 by Williams, W L, Calistro Rivera, G, Best, P N, Hardcastle, M J, Röttgering, H J A, Duncan, K J, de Gasperin, F, Jarvis, M J, Miley, G K, Mahony, E K, Morabito, L K, Nisbet, D M, Prandoni, I, Smith, D J B, Tasse, C, White, G J

“…Abstract This paper presents a study of the redshift evolution of radio-loud active galactic nuclei (AGN) as a function of the properties of their galaxy hosts…”
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The relation between the diffuse X-ray luminosity and the radio power of the central AGN in galaxy groups by Pasini, T, Brüggen, M, de Gasperin, F, Bîrzan, L, O’Sullivan, E, Finoguenov, A, Jarvis, M, Gitti, M, Brighenti, F, Whittam, I H, Collier, J D, Heywood, I, Gozaliasl, G

“…ABSTRACT Our understanding of how active galactic nucleus feedback operates in galaxy clusters has improved in recent years owing to large efforts in…”
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The population of M dwarfs observed at low radio frequencies by Callingham, J. R., Vedantham, H. K., Shimwell, T. W., Pope, B. J. S., Davis, I. E., Best, P. N., Hardcastle, M. J., Röttgering, H. J. A., Sabater, J., Tasse, C., van Weeren, R. J., Williams, W. L., Zarka, P., de Gasperin, F., Drabent, A.

“…Coherent low-frequency (≲200 MHz) radio emission from stars encodes the conditions of the outer corona, mass-ejection events and space weather 1 – 5 . Previous…”
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Abell 746: A Highly Disturbed Cluster Undergoing Multiple Mergers by Rajpurohit, K., Lovisari, L., Botteon, A., Jones, C., Forman, W., O’Sullivan, E., van Weeren, R. J., HyeongHan, K., Bonafede, A., Jee, M. J., Vazza, F., Brunetti, G., Cho, H., Domínguez-Fernández, P., Stroe, A., Finner, K., Brüggen, M., Vrtilek, J. M., David, L. P., Schellenberger, G., Wittman, D., Lusetti, G., Kraft, R., De Gasperin, F.

“…Abstract We present deep XMM-Newton, Karl G. Jansky Very Large Array, and upgraded Giant Metrewave Radio Telescope observations of Abell 746, a cluster that…”
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Sardinia Radio Telescope observations of the Coma cluster by Murgia, M, Govoni, F, Vacca, V, Loi, F, Feretti, L, Giovannini, G, Melis, A, Concu, R, Carretti, E, Poppi, S, Valente, G, Bernardi, G, Bonafede, A, Boschin, W, Brienza, M, Clarke, T E, de Gasperin, F, Enßlin, T A, Ferrari, C, Gastaldello, F, Girardi, M, Gregorini, L, Johnston-Hollitt, M, Orrù, E, Parma, P, Perley, R A, Taylor, G B, Marchegiani, P

“…ABSTRACT 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…”
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Abell 1033: birth of a radio phoenix by de Gasperin, F., Ogrean, G. A., van Weeren, R. J., Dawson, W. A., Brüggen, M., Bonafede, A., Simionescu, A.

“…Extended steep-spectrum radio emission in a galaxy cluster is usually associated with a recent merger. However, given the complex scenario of galaxy cluster…”
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A radio spectral index map and catalogue at 147–1400 MHz covering 80 per cent of the sky by de Gasperin, F, Intema, H T, Frail, D A

“…Abstract The radio spectral index is a powerful probe for classifying cosmic radio sources and understanding the origin of the radio emission. Combining data…”
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Radio galaxies in galaxy groups: kinematics, scaling relations, and AGN feedback by Pasini, T, Finoguenov, A, Brüggen, M, Gaspari, M, de Gasperin, F, Gozaliasl, G

“…ABSTRACT We investigate the kinematic properties of a large (N = 998) sample of COSMOS spectroscopic galaxy members distributed among 79 groups. We identify…”
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The Beautiful Mess in Abell 2255 by Botteon, A., Brunetti, G., van Weeren, R. J., Shimwell, T. W., Pizzo, R. F., Cassano, R., Iacobelli, M., Gastaldello, F., Bîrzan, L., Bonafede, A., Brüggen, M., Cuciti, V., Dallacasa, D., de Gasperin, F., Di Gennaro, G., Drabent, A., Hardcastle, M. J., Hoeft, M., Mandal, S., Röttgering, H. J. A., Simionescu, A.

“…We present LOFAR observations of one of the most spectacular objects in the radio sky: Abell 2255. This is a nearby (z = 0.0806) merging galaxy cluster hosting…”
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The ultra-steep diffuse radio emission observed in the cool-core cluster RX J1720.1+2638 with LOFAR at 54 MHz by Biava, N, de Gasperin, F, Bonafede, A, Edler, H W, Giacintucci, S, Mazzotta, P, Brunetti, G, Botteon, A, Brüggen, M, Cassano, R, Drabent, A, Edge, A C, Enßlin, T, Gastaldello, F, Riseley, C J, Rossetti, M, Rottgering, H J A, Shimwell, T W, Tasse, C, van Weeren, R J

“…ABSTRACT Diffuse radio emission at the centre of galaxy clusters has been observed both in merging clusters on scales of Mpc, called giant radio haloes, and in…”
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