Published June 7, 2019
| Version v1
Journal article
A radio ridge connecting two galaxy clusters in a filament of the cosmic web
- Creators
- 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.
- Gheller, C.
- Manti, S.
- Brüggen, M.
- Brunetti, G.
- Cassano, R.
- de Gasperin, F.
- Ensslin, T.
- Hoeft, M.
- Horellou, C.
- Junklewitz, H.
- Röttgering, H.
- Scaife, A.
- Shimwell, T.
- van Weeren, R.
- Wise, M.
- Others:
- Netherlands Institute for Radio Astronomy (ASTRON)
- Jacobs University [Bremen]
- Leiden Observatory [Leiden] ; Universiteit Leiden [Leiden]
- Alma Mater Studiorum Università di Bologna [Bologna] (UNIBO)
- Services généraux (SGDG) ; Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)
- Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE (UMR_7585)) ; Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)
- Joseph Louis LAGRANGE (LAGRANGE) ; Université Nice Sophia Antipolis (1965 - 2019) (UNS) ; COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de la Côte d'Azur ; COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Université Côte d'Azur (UCA)-Université Côte d'Azur (UCA)-Centre National de la Recherche Scientifique (CNRS)
- Istituto di Radioastronomia [Bologna] (IRA) ; Istituto Nazionale di Astrofisica (INAF)
- Hamburger Sternwarte/Hamburg Observatory ; Universität Hamburg (UHH)
Description
A radio ridge between two galaxy clusters Galaxy clusters contain dozens or hundreds of galaxies, vast quantities of hot gas, and large amounts of dark matter. The gas can emit at radio wavelengths if it contains electrons at relativistic speeds, which can be injected by active galaxies or accelerated during a merger between two clusters. Govoni et al. used the Low-Frequency Array (LOFAR) radio telescope to observe a ridge of radio-emitting plasma extending between two galaxy clusters that are approaching a merger. The results imply that intergalactic magnetic fields connect the two clusters and challenge theories of particle acceleration in the intergalactic medium. Science , this issue p. 981
Abstract
International audience
Additional details
- URL
- https://hal.archives-ouvertes.fr/hal-03648674
- URN
- urn:oai:HAL:hal-03648674v1
- Origin repository
- UNICA