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Fast TeV variability from misaligned minijets in the jet of M87
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The jet of the radio galaxy M87 is misaligned, resulting in a Doppler factor delta~1 for emission of plasma moving parallel to the jet. This makes the observed fast TeV flares on timescales of t_v~5R_g/c harder to understand as emission from the jet. In previous work, we have proposed a jets-in-a-jet model for the ultra-fast TeV flares with t_v<<R_g/c seen in Mrk 501 and PKS 2155-304. Here, we show that about half of the minijets beam their emission outside the jet cone. Minijets emitting off the jet axis result in rapidly evolving TeV (and maybe lower energy) flares that can be observed in nearby radio galaxies. The TeV flaring from M87 fits well into this picture, if M87 is a misaligned blazar.
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Cited by 1 Pith paper
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Multi-TeV flaring in nearby High Energy Blazars: A photohadronic scenario
Review applies the photohadronic model with EBL corrections to explain multi-TeV flaring in three nearby blazars.
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