The Galactic Center is the central region of the Milky Way, where the compact source Sagittarius A* and nearby stellar motions provide a test of a concentrated gravitational potential. It is a region, rather than another name for the entire black hole or one emitting point.
Infrared observations reduce the obscuration that limits ordinary visible-light measurements. Combining stellar astrometry with line-of-sight velocities constrains an orbit and the central mass; precise departures from a Kepler orbit can test general relativity.[ref]
Detection of the Schwarzschild precession in the orbit of the star S2 near the Galactic centre massive black hole by GRAVITY Collaboration. Abstract: combined stellar positions, radial velocities and relativistic orbital fit
A resolved apparent trajectory alone does not supply every orbital component or remove reference-frame uncertainty. Articles by others on the same topic
There are currently no matching articles.