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Most modeling attempts of blazars use a small emission zone located close tothe central black hole in order to explain the broad-band spectral energydistribution. Here we present a case where additionally to the small region a$>$kpc-scale jet is required to successfully reproduce the spectrum andespecially the TeV emission, namely the low-frequeny peaked BL Lac object APLibrae detected in the TeV domain by the H.E.S.S. experiment. Given that otherparts of the spectral energy distribution follow the characteristics implied bythe source classification, the inverse Compton component spans 10 orders ofmagnitude, which cannot be reproduced by the one-zone model. Additionally,observational constraints in both the synchrotron and inverse Comptoncompoenent strongly constrain the parameters of a self-consistent model rulingout the possibility of TeV photon production in the vicinity of the galacticcenter. We discuss the possibility that the TeV radiation is emitted by highlyenergetic particles in the extended, arcsec-scale jet, which has been detectedat radio and X-ray energies. The slope of the jet X-ray spectrum indicates aninverse Compton origin, and an extrapolation to higher energies coincides witha break feature in the $\gamma$-ray band. Modeling the jet emission withinverse Compton scattering of the cosmic microwave background results in anexcellent fit of the radio, X-ray and TeV emission. Implications will bediscussed, such as properties of the jet, acceleration scenarios, andobservations to test the model. If confirmed, large scale jets are able toefficiently accelerate particles and to keep relativistic speeds up todistances of several 100kpc.

The Extended Jet In AP Librae As The Source Of The VHE $\gamma$-ray Emission