Search Results - "Dallacasa, D"

Physical properties of young radio sources: VLBA observations of high-frequency peaking radio sources by Orienti, M., Dallacasa, D.

“…Multifrequency Very Long Baseline Array (VLBA) observations were performed to study the radio morphology and synchrotron spectra of four high-frequency peaking…”
Get full text

A shock at the radio relic position in Abell 115 by Botteon, A., Gastaldello, F., Brunetti, G., Dallacasa, D.

“…We analysed a deep Chandra observation (334 ks) of the galaxy cluster Abell 115 and detected a shock cospatial with the radio relic. The X-ray surface…”
Get full text

Variability and parsec-scale radio structure of candidate compact symmetric objects by Orienti, M, Dallacasa, D

“…ABSTRACT We report results on multiepoch Very Large Array (VLA) and pc-scale Very Long Baseline Array (VLBA) observations of candidate compact symmetric…”
Get full text

VLBI images at 327 MHz of compact steep spectrum and GHz-peaked spectrum sources from the 3C and PW samples by Dallacasa, D, Orienti, M, Fanti, C, Fanti, R

“…ABSTRACT We present results on global very long baseline interferometry (VLBI) observations at 327 MHz of 18 compact steep-spectrum (CSS) and GHz-peaked…”
Get full text

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…”
Get full text

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…”
Get full text

X-ray properties of z > 4 blazars by Ighina, L, Caccianiga, A, Moretti, A, Belladitta, S, Della Ceca, R, Ballo, L, Dallacasa, D

“…ABSTRACT We present the X-ray analysis of the largest flux-limited complete sample of blazar candidates at z > 4 selected from the Cosmic Lens All Sky Survey…”
Get full text

A Deep uGMRT View of the Ultra-steep Spectrum Radio Halo in A521 by Santra, R., Kale, R., Giacintucci, S., Markevitch, M., De Luca, F., Bourdin, H., Venturi, T., Dallacasa, D., Cassano, R., Brunetti, G., Buch, K. D.

“…Abstract We present the first detailed analysis of the ultra-steep spectrum radio halo in the merging galaxy cluster A521, based on upgraded Giant Metrewave…”
Get full text

Young but fading radio sources: searching for remnants among compact steep-spectrum radio sources by Orienti, M, Murgia, M, Dallacasa, D, Migliori, G, D’Ammando, F

“…ABSTRACT The incidence of young but fading radio sources provides important information on the life cycle of radio emission in radio-loud active galactic…”
Get full text

A Candle in the Wind: A Radio Filament in the Core of the A3562 Galaxy Cluster by Giacintucci, S., Venturi, T., Markevitch, M., Bourdin, H., Mazzotta, P., Merluzzi, P., Dallacasa, D., Bardelli, S., Sikhosana, S. P., Smirnov, O., Bernardi, G.

“…Using a MeerKAT observation of the galaxy cluster A3562 (a member of the Shapley Supercluster), we have discovered a narrow, long and straight, very faint…”
Get full text

Hard X-ray selected giant radio galaxies – II. Morphological evidence of restarted radio activity by Bruni, G, Panessa, F, Bassani, L, Dallacasa, D, Venturi, T, Saripalli, L, Brienza, M, Hernández-García, L, Chiaraluce, E, Ursini, F, Bazzano, A, Malizia, A, Ubertini, P

“…ABSTRACT About 6 per cent of radio galaxies (RGs) can reach linear sizes larger than 0.7 Mpc, and are then classified as giant radio galaxies (GRGs). The…”
Get full text

A Discovery of Young Radio Sources in the Cores of Giant Radio Galaxies Selected at Hard X-Rays by Bruni, G., Panessa, F., Bassani, L., Chiaraluce, E., Kraus, A., Dallacasa, D., Bazzano, A., Hernández-García, L., Malizia, A., Ubertini, P., Ursini, F., Venturi, T.

“…Giant radio galaxies (GRG) are the largest single entities in the universe, having a projected linear size exceeding 0.7 Mpc, which implies that they are also…”
Get full text

Radio multifrequency observations of Abell 781 with the WSRT by Hugo, B, Bernardi, G, Smirnov, O M, Dallacasa, D, Venturi, T, Murgia, M, Pizzo, R F

“…ABSTRACT The Main galaxy cluster in the Abell 781 system is undergoing a significant merger and accretion process with peripheral emission to the north and…”
Get full text

Parsec-scale morphology and spectral-index distribution in faint high-frequency peakers by Orienti, M., Dallacasa, D.

“…We investigate the parsec-scale structure of 17 high-frequency peaking radio sources from the faint high-frequency peaker sample. Very Long Baseline Array…”
Get full text

A sample of small-sized compact steep-spectrum radio sources: VLBI images and VLA polarization at 5 GHz by Dallacasa, D., Orienti, M., Fanti, C., Fanti, R., Stanghellini, C.

“…Global Very Long Baseline Interferometry (VLBI) observations at 5 GHz have been performed to study the source morphology in 10 compact steep-spectrum (CSS)…”
Get full text

Radio VLBA polarization and multiband monitoring of the high-redshift quasar S5 0836 + 710 during a high-activity period by Orienti, M, D’Ammando, F, Giroletti, M, Dallacasa, D, Giovannini, G, Ciprini, S

“…ABSTRACT We report on results of a multiband monitoring campaign from radio to γ-rays of the high-redshift flat spectrum radio quasar S5 0836 + 710 during a…”
Get full text

The column density distribution of hard X-ray radio galaxies by Panessa, F., Bassani, L., Landi, R., Bazzano, A., Dallacasa, D., La Franca, F., Malizia, A., Venturi, T., Ubertini, P.

“…In order to investigate the role of absorption in active galactic nuclei (AGN) with jets, we have studied the column density distribution of a hard X-ray…”
Get full text

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…”
Get full text

The space density of z  > 4 blazars by Caccianiga, A, Moretti, A, Belladitta, S, Della Ceca, R, Antón, S, Ballo, L, Cicone, C, Dallacasa, D, Gargiulo, A, Ighina, L, Marchã, M J, Severgnini, P

Get full text

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…”
Get full text