Browsing by Author "Gennaro, G. Di"

Now showing items 1-6 of 6

    • The beautiful mess in Abell 2255 

      Botteon, A.; Brunetti, G.; Weeren, R. J. van; Shimwell, T. W.; Pizzo, R. F.; Cassano, R.; Iacobelli, M.; Gastaldello, F.; Bîrzan, L.; Bonafede, A.; Brüggen, M.; Cuciti, V.; Dallacasa, D.; Gasperin, F. de; Gennaro, G. Di; Drabent, A.; Hardcastle, M. J.; Hoeft, M.; Mandal, S.; Röttgering, H. J. A.; Simionescu, A. (2020-07-07)
      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 one of the first radio halos ever detected in the intra-cluster ...

    • The great Kite in the sky: a LOFAR observation of the radio source in Abell 2626 

      Ignesti, A.; Shimwell, T.; Brunetti, G.; Gitti, M.; Intema, H.; Weeren, R. J. van; Hardcastle, M. J.; Clarke, A. O.; Botteon, A.; Gennaro, G. Di; Brüggen, M.; Browne, I.; Mandal, S.; Röttgering, H. J. A.; Cuciti, V.; Gasperin, F. de; Cassano, R.; Scaife, Anna M.M. (2020-09-29)
      The radio source at the center of the galaxy cluster Abell 2626, also known as the Kite, stands out for its unique morphology composed of four, symmetric arcs. Previous studies have probed the properties of this source at ...

    • LOFAR discovery of a radio halo in the high-redshift galaxy cluster PSZ2 G099.86+58.45 

      Cassano, R.; Botteon, A.; Gennaro, G. Di; Brunetti, G.; Sereno, M.; Shimwell, T. W.; Weeren, R. J. van; Brüggen, M.; Gastaldello, F.; Izzo, L.; Bîrzan, L.; Bonafede, A.; Cuciti, V.; Gasperin, F. de; Rötttgering, H. J. A.; Hardcastle, M.; Mechev, A. P.; Tasse, C. (2019-08-19)
      In this Letter, we report the discovery of a radio halo in the high-redshift galaxy cluster PSZ2 G099.86+58.45 ($z=0.616$) with the LOw Frequency ARray (LOFAR) at 120-168 MHz. This is one of the most distant radio halos ...

    • The LOFAR Two-metre Sky Survey -- V. Second data release 

      Shimwell, T. W.; Hardcastle, M. J.; Tasse, C.; Best, P. N.; Röttgering, H. J. A.; Williams, W. L.; Botteon, A.; Drabent, A.; Mechev, A.; Shulevski, A.; Weeren, R. J. van; Bester, L.; Brüggen, M.; Brunetti, G.; Callingham, J. R.; Chyży, K. T.; Conway, J. E.; Dijkema, T. J.; Duncan, K.; Gasperin, F. de; Hale, C. L.; Haverkorn, M.; Hugo, B.; Jackson, N.; Mevius, M.; Miley, G. K.; Morabito, L. K.; Morganti, R.; Offringa, A.; Oonk, J. B. R.; Rafferty, D.; Sabater, J.; Smith, D. J. B.; Schwarz, D. J.; Smirnov, O.; O'Sullivan, S. P.; Vedantham, H.; White, G. J.; Albert, J. G.; Alegre, L.; Asabere, B.; Bacon, D. J.; Bonafede, A.; Bonnassieux, E.; Brienza, M.; Bilicki, M.; Bonato, M.; Rivera, G. Calistro; Cassano, R.; Cochrane, R.; Croston, J. H.; Cuciti, V.; Dallacasa, D.; Danezi, A.; Dettmar, R. J.; Gennaro, G. Di; Edler, H. W.; Enßlin, T. A.; Emig, K. L.; Franzen, T. M. O.; García-Vergara, C.; Grange, Y. G.; Gürkan, G.; Hajduk, M.; Heald, G.; Heesen, V.; Hoang, D. N.; Hoeft, M.; Horellou, C.; Iacobelli, M.; Jamrozy, M.; Jelić, V.; Kondapally, R.; Kukreti, P.; Kunert-Bajraszewska, M.; Magliocchetti, M.; Mahatma, V.; Małek, K.; Mandal, S.; Massaro, F.; Meyer-Zhao, Z.; Mingo, B.; Mostert, R. I. J.; Nair, D. G.; Nakoneczny, S. J.; Nikiel-Wroczyński, B.; Orrú, E.; Pajdosz-Śmierciak, U.; Pasini, T.; Prandoni, I.; Piggelen, H. E. van; Rajpurohit, K.; Retana-Montenegro, E.; Riseley, C. J.; Rowlinson, A.; Saxena, A.; Schrijvers, C.; Sweijen, F.; Siewert, T. M.; Timmerman, R.; Vaccari, M.; Vink, J.; West, J. L.; Wołowska, A.; Zhang, X.; Zheng, J. (2022-02-25)
      In this data release from the ongoing LOw-Frequency ARray (LOFAR) Two-metre Sky Survey we present 120a 168 MHz images covering 27% of the northern sky. Our coverage is split into two regions centred at approximately 12h45m ...

    • The Planck clusters in the LOFAR sky. I. LoTSS-DR2 new detections and sample overview 

      Botteon, A.; Shimwell, T. W.; Cassano, R.; Cuciti, V.; Zhang, X.; Bruno, L.; Camillini, L.; Natale, R.; Jones, A.; Gastaldello, F.; Simionescu, A.; Rossetti, M.; Akamatsu, H.; Weeren, R. J. van; Brunetti, G.; Brüggen, M.; Groenveld, C.; Hoang, D. N.; Hardcastle, M. J.; Ignesti, A.; Gennaro, G. Di; Bonafede, A.; Drabent, A.; Röttgering, H. J. A.; Hoeft, M.; Gasperin, F. de (2022-04-30)
      Context. Relativistic electrons and magnetic fields permeate the intra-cluster medium (ICM) and manifest themselves as diffuse sources of synchrotron emission observable at radio wavelengths, namely radio halos and radio ...

    • Revived Fossil Plasma Sources in Galaxy Clusters 

      Mandal, S.; Intema, H. T.; Weeren, R. J. van; Shimwell, T. W.; Botteon, A.; Brunetti, G.; Gasperin, F. de; Brüggen, M.; Gennaro, G. Di; Kraft, R.; Röttgering, H. J. A.; Hardcastle, M.; Tasse, C. (2020-01-28)
      It is well established that particle acceleration by shocks and turbulence in the intra-cluster medium can produce cluster-scale synchrotron emitting sources. However, the detailed physics of these particle acceleration ...