Black holes Gravitation 2 Radio astronomy Stars 2 Accretion 1 Accretion discs 1 Accretion disks 1 Black Hole physics 1 Black hole physics 1 Confidence levels 1 Dark Matter 1 Dark matter 1 Distribution functions 1 Galaxies 1 Globular cluster: individual: m87 1 Globular clusters: individual 1 Globular clusters: individual: M87 1 Gravitational lensing: strong 1 Magnetohydrodynamic 1 Magnetohydrodynamics 1 Magnetohydrodynamics (MHD) 1 Magnetoplasma 1 Non-detection 1 Nonthermal 1 Planck mass 1 Primordial black holes 1 Quasar: supermassive black hole 1 Radiation mechanisms: non-thermal 1 Radiation mechanisms: nonthermal 1 Radiative transfer 1