High-resolution observations using a network of ground-based radio dishes and one telescope in space have revealed filamentary structures in the source 3C279. These filaments may explain the origin of radio variability in blazar jets.
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Janssen, M. Filaments explaining blazar jet radio variability. Nat Astron 7, 1276–1277 (2023). https://doi.org/10.1038/s41550-023-02106-6
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DOI: https://doi.org/10.1038/s41550-023-02106-6