A Physical Interpretation of Milky Way Galaxy Dynamics from Precision
  Astrometrics
  The dynamical and virial mass of the Milky Way galaxy is estimated using
latest high precision stellar halo and dwarf galaxy satellite kinematics. The
new data suggest the Galaxy is a highly compact, classically thermalized
object. Kinematics exhibit significant velocity-spatial substructure,
distinctive dynamic partitions, and strong Keplerian signatures that run
counter to popular notions of featureless and massively extended dark matter
halos. The effective local escape velocity profile of the Galaxy is quantified
in terms of distribution and kinematics to reveal the physics responsible for
the Mass Discrepancy-Acceleration (MDAR) and Radial Acceleration (RAR)
relations.
