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File: Fast 3C 279 γ flares by a merging medium size black hole jet aligned to the AGN one by tidal torque?

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D. Fargion, P. Oliva


The shorter-than-Schwarzschild 3C 279 variability flare on June 2015 is very puzzling. Its nature cannot be due to any NS merging nor to a medium sized (˜ 102 M) BH collapse. Our preliminary model is based on the long-life (˜ 107 s) merging of a medium size BH (˜ 102 M) spiralling towards the more massive AGN (BH) that is tidally dragging the medium size BH jet in alignment with the jet of the more massive BH of AGN 3C 279. The tidal torque is aligning both jets towards Earth. The twin overlapping blazars may offer at once a long and a short scale variability consistent with the surprising Fermi discoveries.

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