ausblenden:
Schlagwörter:
-
Zusammenfassung:
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.