A radio ridge connecting two galaxy clusters in a filament of the cosmic web.
Journal
Science (New York, N.Y.)
ISSN: 1095-9203
Titre abrégé: Science
Pays: United States
ID NLM: 0404511
Informations de publication
Date de publication:
07 Jun 2019
07 Jun 2019
Historique:
received:
30
03
2018
accepted:
13
05
2019
entrez:
8
6
2019
pubmed:
7
6
2019
medline:
7
6
2019
Statut:
ppublish
Résumé
Galaxy clusters are the most massive gravitationally bound structures in the Universe. They grow by accreting smaller structures in a merging process that produces shocks and turbulence in the intracluster gas. We observed a ridge of radio emission connecting the merging galaxy clusters Abell 0399 and Abell 0401 with the Low-Frequency Array (LOFAR) telescope network at 140 megahertz. This emission requires a population of relativistic electrons and a magnetic field located in a filament between the two galaxy clusters. We performed simulations to show that a volume-filling distribution of weak shocks may reaccelerate a preexisting population of relativistic particles, producing emission at radio wavelengths that illuminates the magnetic ridge.
Identifiants
pubmed: 31171695
pii: 364/6444/981
doi: 10.1126/science.aat7500
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
981-984Informations de copyright
Copyright © 2019 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works.