Speaker
Alessandro Ballone
(MPE / LMU)
Description
Some authors have suggested and studied the possibility of the gas and
dust cloud G2 observed in the Galactic Center (Gillessen et al., 2012;
2013) being the outflow from a low luminosity star embedded in it
(Gillessen et al., 2012; Burkert et al., 2012; Murray-Clay \& Loeb, 2012;
Miralda-Escud\'e, 2012; Meyer \& Meyer-Hofmeister, 2012, Scoville, 2013).
With the help of 2D hydrodynamical simulations in cylindrical coordinates
with the Eulerian code PLUTO (Mignone et al., 2007, 2012), we have modeled
the plunging of spherically symmetric winds on a free-fall (e=1) orbit
towards SgrA*, studying the impact on their structure and evolution of the
hot atmosphere around it and of the strong tidal field of the SMBH at the
Center of the Milky Way. A variation of the wind parameters has allowed us
to find a best model, with Mdot_w=8.8e-8 Msol/yr and v_w=50 km/s.
Author
Alessandro Ballone
(MPE / LMU)