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M87 hosts one of the closest jetted active galactic nucleus (AGN) to Earth.Thanks to its vicinity and to the large mass of is central black hole, M87 isthe only source in which the jet can be directly imaged down to near-eventhorizon scales with radio very large baseline interferometry (VLBI). Thisproperty makes M87 a unique source to isolate and study jet launching,acceleration and collimation. In this paper we employ a multi-zone modeldesigned as a parametrisation of general relativistic magneto-hydrodynamics(GRMHD); for the first time we reproduce the jet's observed shape andmulti-wavelength spectral energy distribution (SED) simultaneously. We findstrong constraints on key physical parameters of the jet, such as the locationof particle acceleration and the kinetic power. However, we under-predict the(unresolved) {\gamma}-ray flux of the source, implying that the high-energyemission does not originate in the magnetically-dominated inner jet regions.Our results have important implications both for comparisons of GRMHDsimulations with observations, and for unified models of AGN classes.

The unique case of the AGN core of M87: a misaligned low power blazar?