Speaker
Description
SgrA shows flaring events in the near-infrared and X-ray bands
several times a day, with multiple flares tracing an orbit around the
black hole. We model the relativistic motion of hot spots and provide a
direct correlation between the flux eruption events, characteristic of the
MAD accretion state, and the observed flaring activity in the Galactic
Center (GRAVITY). However, MAD models demonstrate a highly variable
accretion flow, in contrast with the low horizon-scale variability of
SgrA (EHT). We investigate accretion disk models with unique magnetic
field configurations and implement natural mechanisms for magnetic field
dissipation. We generate synthetic observables for direct comparison with
the multi-wavelength characteristics of SgrA and study the observed
accretion flow variability. This work imposes constraints on the intrinsic
source characteristics and provides a promising framework for
understanding the broad spectrum of multi-wavelength observations of
SgrA.