Supermassive black holes (BHs) have been found in 85 galaxies by dynamical modeling of
spatially resolved kinematics. The Hubble Space Telescope revolutionized BH research by …

The Galactic Center is an excellent laboratory for studying phenomena and physical
processes that may be occurring in many other galactic nuclei. The center of our Milky Way …

Astrophysical black holes are expected to be described by the Kerr metric. This is the only
stationary, vacuum, axisymmetric metric, without electromagnetic charge, that satisfies …

Astrophysical black holes are expected to be described by the Kerr metric. This is the only
stationary, vacuum, axisymmetric metric, without electromagnetic charge, that satisfies …

The general theory of relativity predicts that a star passing close to a supermassive black
hole should exhibit a relativistic redshift. In this study, we used observations of the Galactic …

Using 25 years of data from uninterrupted monitoring of stellar orbits in the Galactic Center,
we present an update of the main results from this unique data set: a measurement of mass …

We present new, more precise measurements of the mass and distance of our Galaxy's
central supermassive black hole, Sgr A*. These results stem from a new analysis that more …

Thanks to unparalleled near-horizon images of the shadows of Messier 87*(M87*) and
Sagittarius A*(Sgr A*) delivered by the Event Horizon Telescope (EHT), two amazing …

The rapidly expanding field of galaxy formation lies at the interface between astronomy,
particle physics, and cosmology. Covering diverse topics from these disciplines, all of which …

Evidence shows that massive black holes reside in most local galaxies. Studies have also
established a number of relations between the MBH mass and properties of the host galaxy …