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Astronomers Unveil Distant Radio Circle Defying Black Hole Theories

10/11/2025

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Summary

Story summary

Astronomers have discovered the most distant and powerful odd radio circle, RAD J131346.9+500320, a double-ringed structure billions of light-years away that challenges black hole activity theories.
The University of Mumbai's RAD@home Astronomy Collaboratory made the discovery using the Low-Frequency Array (LOFAR).
Two additional massive radio sources were found, showing structures shaped by interactions with hot cluster plasma, highlighting citizen science and future detections with the Square Kilometre Array.

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Story summary

Astronomers have discovered the most distant and powerful odd radio circle, RAD J131346.9+500320, a double-ringed structure billions of light-years away that challenges black hole activity theories.
The University of Mumbai's RAD@home Astronomy Collaboratory made the discovery using the Low-Frequency Array (LOFAR).
Two additional massive radio sources were found, showing structures shaped by interactions with hot cluster plasma, highlighting citizen science and future detections with the Square Kilometre Array.