By Margot Boughelilba

Around the famous black hole photographed a few years ago, lies a very bright and powerful region: M87. The low-luminosity active galactic nuclei M87, was observed in a historically quiet state in 2017. We explore a hybrid jet-disk scenario in this work: the spectrum of M87's core is explained by a jet model composed of electrons and protons accelerated at the same time. Another component, the accretion flow (ie the matter falling towards the black hole) is modelled to complete the picture. We find parameter sets for which the jet component fits the low-energy data as well as the very-high-energy band, while the accretion flow mainly contributes to the high-energy band.

Find out more: https://iopscience.iop.org/article/10.3847/1538-4357/ac8e64