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Two Blazars Add a Second Radio Rhythm
Long monitoring records show candidate 2:1 periodicities in PKS J0805-0111 and PKS 2131-021, adding potential corroboration for binary interpretations.
Summary
Long monitoring records show candidate 2:1 periodicities in PKS J0805-0111 and PKS 2131-021, adding potential corroboration for binary interpretations.
The reported harmonic structure follows an earlier 2:1 candidate in J1309+1154 and could help distinguish physical periodicity from correlated noise in long blazar light curves. The authors present several possible models and arguments for and against the signals. These remain supermassive-black-hole-binary candidates, not confirmed binaries.
Why it matters
Long monitoring records show candidate 2:1 periodicities in PKS J0805-0111 and PKS 2131-021, adding potential corroboration for binary interpretations.
Limits and context
- These remain supermassive-black-hole-binary candidates, not confirmed binaries.
Key claims
Long monitoring records show candidate 2:1 periodicities in PKS J0805-0111 and PKS 2131-021, adding potential corroboration for binary interpretations.
Qualification: These remain supermassive-black-hole-binary candidates, not confirmed binaries.
Evidence: source-2026-10-28-021
Sources
- arXiv preprint 2610.36732, original v1arXiv · primary research
Corrections
No corrections have been recorded for this story.