Zobrazeno 1 - 10
of 65
pro vyhledávání: '"D Wittor"'
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 523:701-719
Recent observations of radio relics - diffuse radio emission in galaxy clusters - have revealed that these sources are not smooth but consist of structures in the form of threads and filaments. We investigate the origin of these filamentary structure
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::52f5ee707db23b10586a5823b8a0cc78
https://doi.org/10.1093/mnras/stad1463
https://doi.org/10.1093/mnras/stad1463
Akademický článek
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Autor:
Massimo Gaspari, D. Wittor
Publikováno v:
Monthly Notices of the Royal Astronomical Society
Turbulence in the intracluster, intragroup, and circumgalactic medium plays a crucial role in the self-regulated feeding and feedback loop of central supermassive black holes. We dissect the three-dimensional turbulent `weather' in a high-resolution
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1c35ac5d817eabb86eaf09f4c526ff98
https://doi.org/10.1093/mnras/staa2747
https://doi.org/10.1093/mnras/staa2747
Publikováno v:
Monthly Notices of the Royal Astronomical Society: Letters
Observations of large-scale radio emissions prove the existence of shock accelerated cosmic-ray electrons in galaxy clusters, while the lack of detected $\gamma$-rays limits the acceleration of cosmic-ray protons in galaxy clusters. This challenges o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::86a5fca7a9bb78b9aa6263b8c8c5ff63
https://doi.org/10.1093/mnrasl/slaa066
https://doi.org/10.1093/mnrasl/slaa066
Autor:
N. Locatelli, A. S. Rajpurohit, P. Dominguez-Fernandez, Jean A. Eilek, A. Botteon, H. J. A. Röttgering, E. Bonnassieux, M. Brienza, R. J. van Weeren, Marcus Brüggen, A. Drabent, G. Brunetti, Franco Vazza, Lawrence Rudnick, S. Rajpurohit, William R. Forman, F. Loi, D. Wittor, Matthias Hoeft, K. Rajpurohit, Tracy E. Clarke, C. J. Riseley, Annalisa Bonafede
Publikováno v:
Astronomy & Astrophysics, 657:A2
We present wideband (1 − 6.5 GHz) polarimetric observations, obtained with the Karl G. Jansky Very Large Array, of the merging galaxy cluster MACS J0717.5+3745, which hosts one of the most complex known radio relic and halo systems. We used both ro
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::269cdb9644d05592e2caec461ce66505
https://hdl.handle.net/1887/3515574
https://hdl.handle.net/1887/3515574
Autor:
F. Vazza, D. Wittor, L. Di Federico, M. Brüggen, M. Brienza, G. Brunetti, F. Brighenti, T. Pasini
We simulate the evolution of relativistic electrons injected into the medium of a small galaxy cluster by a central radio galaxy, studying how the initial jet power affects the dispersal and the emission properties of radio plasma. By coupling passiv
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e4e3b5b7184567a2e448b62412f87789
Autor:
V. Vacca, M. Kierdorf, Raimondo Concu, K. Rajpurohit, Andrea Melis, Matteo Murgia, F. Gastaldello, Luigina Feretti, Ettore Carretti, Paolo Serra, Annalisa Bonafede, M. Brienza, Federica Govoni, F. Loi, Walter Boschin, Rosita Paladino, Rainer Beck, Franco Vazza, D. Wittor
Publikováno v:
Monthly Notices of the Royal Astronomical Society
Observations of radio relics at very high frequency (>10 GHz) can help to understand how particles age and are (re-)accelerated in galaxy cluster outskirts and how magnetic fields are amplified in these environments. In this work, we present new sing
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e436682baf3f2010832f1082bdd9cea9
Autor:
K. Rajpurohit, R. J. van Weeren, M. Hoeft, F. Vazza, M. Brienza, W. Forman, D. Wittor, P. Domínguez-Fernández, S. Rajpurohit, C. J. Riseley, A. Botteon, E. Osinga, G. Brunetti, E. Bonnassieux, A. Bonafede, A. S. Rajpurohit, C. Stuardi, A. Drabent, M. Brüggen, D. Dallacasa, T. W. Shimwell, H. J. A. Röttgering, F. de Gasperin, G. K. Miley, M. Rossetti
Publikováno v:
The Astrophysical Journal, 927(1):80
We present deep and high fidelity images of the merging galaxy cluster Abell 2256 at low frequencies, using the upgraded Giant Metrewave Radio Telescope (uGMRT) and LOw-Frequency ARray (LOFAR). This cluster hosts one of the most prominent known relic
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0580f346b00f7ad95a62a4b166e592cb
Autor:
Matthias Hoeft, Stefano Ettori, P Domínguez-Fernández, Franco Vazza, D. Wittor, K. Rajpurohit
Radio relics are the manifestation of electrons presumably being shock (re-)accelerated to high energies in the outskirts of galaxy clusters. However, estimates of the shocks' strength yield different results when measured with radio or X-ray observa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::901c5d6057ea8113128e6f05d0128d13
Autor:
F. de Gasperin, L. Rudnick, A. Finoguenov, D. Wittor, H. Akamatsu, M. Brüggen, J. O. Chibueze, T. E. Clarke, W. Cotton, V. Cuciti, P. Domínguez-Fernández, K. Knowles, S. P. O’Sullivan, L. Sebokolodi
Publikováno v:
Astronomy & Astrophysics. 659:A146
During their lifetime, galaxy clusters grow through the accretion of matter from the filaments of the large scale structure and from mergers with other clusters. These mergers release a large amount of energy into the intracluster medium (ICM) throug
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::edee1ea1d4f7a0f846ab27b648541724
https://doi.org/10.1051/0004-6361/202142658
https://doi.org/10.1051/0004-6361/202142658