Hadronic-origin orphan TeV flare from 1ES 1959 + 650

The 1ES 1959 + 650 is a high-peaked BL Lacertae object. On the 4th of June, 2002, it exhibited a strong TeV flare without any low energy counterpart, providing for the first time an example of an orphan flare from a blazar. Observation of this orphan flare is in striking disagreement with the predictions of the leptonic models thus challenging the conventional synchrotron self-Compton interpretation of the TeV emission. Here we propose that the low energy tail of the synchrotron self-Compton photons in the blazar jet serve as the target for the Fermi-accelerated high energy protons of energy [