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We present two-temperature, radiative general relativisticmagnetohydrodynamic simulations of Magnetically Arrested Discs (MAD) thatlaunch powerful relativistic jets. The mass accretion rates of our simulationsare scaled to match the luminosity of the accretion flow around thesupermassive black hole in M87. We consider two sub-grid prescriptions forelectron heating: one based on a Landau-damped turbulent cascade, and the otherbased on heating from trans-relativistic magnetic reconnection. The simulationsproduce jets with power on the order of the observed value for M87. Bothsimulations produce spectra that are consistent with observations of M87 in theradio, millimetre, and submillimetre. Furthermore, the predicted imagecore-shifts in both models at frequencies between 15 GHz and 86 GHz areconsistent with observations. At 43 and 86 GHz, both simulations produce wideopening angle jets consistent with VLBI images. Both models produce 230~GHzimages with distinct black hole shadows that are resolvable by the EventHorizon Telescope (EHT), although at a viewing angle of 17 degrees, the 230 GHzimages are too large to match EHT observations from 2009 and 2012. The 230 GHzimages from the simulations are dynamic on time-scales of months to years,suggesting that repeated EHT observations may be able to detect the motion ofrotating magnetic fields at the event horizon.

Two-temperature, Magnetically Arrested Disc simulations of the jet from the supermassive black hole in M87