Astronomers using the LOFAR radio array have detected a vast “mini-halo” of high-energy particles around galaxy cluster SpARCS1049, whose light has traveled 10 billion years to reach us. The find doubles the previous distance record and shows that colossal clusters have been bathed in charged particles since the universe’s youth. Record-Breaking Mini-Halo Discovery Astronomers have […]



Summary

Using the LOFAR radio array, astronomers discovered a record-breaking “mini-halo” of high-energy particles surrounding the distant galaxy cluster SpARCS1049. Located 10 billion light-years away, this doubles the previous distance record for such a detection. This discovery demonstrates that massive galaxy clusters were enveloped in charged particles relatively early in the universe’s history. The mini-halo provides valuable insight into the energetic processes occurring within these developing cosmic structures billions of years ago.

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