izvcrao Изв. Крымск. Астрофиз. Обсерв. Izv. Krymsk. Astrofiz. Observ. Известия Крымской астрофизической обсерватории Izvestiya Krymskoi Astrofizicheskoi Observatorii 0367-8466 3034-4107 Киселев Н.Н., пос. Московский, Москва, РФ RU 230 Материалы конференции Сonference proceedings Radio Relics in Clusters of Galaxies: A unique case of Abell 548b Tsarevsky G. Feretti L. Andernach H. Bacchi M. Slee O.B. Giovannini G. Govoni F. Astro Space Center, Academy of Science, 84/32 Profsoyuznaya St., Moscow, 117910 Russia; Australia Telescope National Facility, CSIRO, P.O. Box 76, Epping, NSW 1710, Australia INAF Istituto di Radioastronomia, via P. Gobetti 101, I–40129 Bologna, Italy Departamento de Astronom´ıa, Universidad de Guanajuato, AP 144, Guanajuato CP 36000, Mexico INAF Istituto di Radioastronomia, via P. Gobetti 101, I–40129 Bologna, Italy Australia Telescope National Facility, CSIRO, P.O. Box 76, Epping, NSW 1710, Australia Dipartimento di Astronomia, Univ. Bologna, via Ranzani 1, I-40127 Bologna, Italy; INAF Istituto di Radioastronomia, via P. Gobetti 101, I–40129 Bologna, Italy INAF Istituto di Radioastronomia, via P. Gobetti 101, I–40129 Bologna, Italy; INAF Osservatorio Astronomico di Cagliari, Loc. Poggio dei Pini, Strada 54, 09012 Capoterra, Italy 01 07 2007 103 3 37 42 25 09 2017 Copyright (c) 2007 , , , , , , Copyright (c) 2007 Tsarevsky G., Feretti L., Andernach H., Bacchi M., Slee O., Giovannini G., Govoni F. 2007 , , , , , , Tsarevsky G., Feretti L., Andernach H., Bacchi M., Slee O., Giovannini G., Govoni F. Метаданные этой статьи доступны по лицензии Creative Commons «Attribution» («Атрибуция») 4.0 Всемирная. Авторское право и право на публикацию текстов, представленных в журнале  "Известия Крымской астрофизической обсерватории", сохраняются за авторами, при этом право первой публикации предоставляется журналу. Тексты могут свободно использоваться при условии правильного цитирования с указанием авторства в соответствии с лицензией Creative Commons «Attribution» («Атрибуция») 4.0 Всемирная. The metadata for this submission is licensed under a Creative Commons Attribution 4.0 International License. Copyright and publishing rights for texts published in Izvestiya Krymskoi Astrofizicheskoi Observatorii is retained by the authors, with first publication rights granted to the journal.Texts are free to use with proper attribution and link to the licensing (Creative Commons Attribution 4.0 International).

Currently about 30 clusters of galaxies are known to have diffuse radio sources (so-called relics), but detailed studies are available for only a few. A548b, a rich and X-ray bright cluster of galaxies, is one of only three clusters (together with A3376 and A3667) known to contain two relics. From our investigation based on multi-wavelength ATCA and VLA observations, we found that both relics (A and B), located on the same side of the cluster’s center, show similar flux, extent, shape, high level of polarization and very steep spectral index. We conclude that these sources are likely related to the merger activity in the cluster. We have also possibly detected a centrally projected third relic (C). If confirmed, it would make A548b a unique triple-relic cluster.