Intrinsic Size and Shape of Sgr A*: 3.6 AU by <1 AU

K. Y. Lo, Z. -Q. Shen, J. -H. Zhao +1

By means of near-simultaneous multi-wavelength VLBA measurements, we determine for the first time the intrinsic size of Sgr A* to be 3.6 AU by <1 AU with the major axis oriented es…