Speaker
Mr
Alessandro Ballone
(USM/MPE, Garching)
Description
The evolution of the dust cloud G2, discovered by Gillessen et al. (2012), has been continuously monitored from 2004 to now. The most recent position-velocity diagrams, obtained from the integral field spectrograph SINFONI at VLT, clearly show that G2 has experienced the pericenter passage. Thus, G2 is now subject to the maximum tidal field of the supermassive black hole and hydrodynamical effects will dominate the further evolution. Despite of this wealth of observations, the nature of the cloud is still unclear and a dichotomy between two most popular models still remains, namely the "diffuse cloud" and the "compact source" scenarios. The present contribution focuses on the investigation - by means of new 3D AMR simulations - of the second scenario, with G2 being the outflow from a low-mass central source. A direct and detailed comparison with the available observations allows us to draw the attention to the effect of the many different involved parameters and to the differences arising in the near future, enabling us to shed light on the nature of G2.
Author
Mr
Alessandro Ballone
(USM/MPE, Garching)