  Recent near-IR (NIR) and X-ray observations of Sagittarius A*'s spectrum have
yielded several strong constraints on the transient energization mechanism,
justifying a re-examination of the stochastic acceleration model proposed
previously for these events. We here demonstrate that the new results are fully
consistent with the acceleration of electrons via the transit-time damping
process. But more importantly, these new NIR and X-ray flares now can constrain
the source size, the gas density, the magnetic field, and the wave energy
density in the turbulent plasma. Future simultaneous multi-wavelength
observations with good spectral information will, in addition, allow us to
study their temporal evolution, which will eventually lead to an accurate
determination of the behavior of the plasma just minutes prior to its
absorption by the black hole.
