Resolving the base of the relativistic jet in M87 at 6$R_{\mathrm{sch}}$ resolution with global mm-VLBI

J. -Y. Kim, R. -S. Lu, T. P. Krichbaum +4

M87 is one of the nearest radio galaxies with a central SMBH and a prominent relativistic jet. Due to its close distance to the observer and the large SMBH mass, the source is one…