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 $\lesssim 100\mathrm{TeV}$ within the jet to produce the TeV photons through the decay of neutral pions from the delta resonance. Our model explains very nicely the observed TeV flux from this orphan flare and we also estimate the high energy neutrino flux from this flaring event.