%0 Journal Article %A K. Hada %A A. Doi %A M. Kino %A H. Nagai %A Y. Hagiwara %A N. Kawaguchi %B Nature %D 2011 %G eng %P 185-187 %R 10.1038/nature10387 %T An origin of the radio jet in M87 at the location of the central black hole %V 477