Detection of the Intrinsic Size of Sagittarius A* Through Closure Amplitude Imaging
Detection of the Intrinsic Size of Sagittarius A* Through Closure Amplitude Imaging
We have detected the intrinsic size of Sagittarius A*, the Galactic center radio source associated with a supermassive black hole, showing that the short-wavelength radio emission arises from very near the event horizon of the black hole. Radio observations with the Very Long Baseline Array show that the source has …