Kavli Affiliate: R. Morris
| First 5 Authors: Cuc K. Dinh, Jesus M. Salas, Mark R. Morris, Smadar Naoz,
| Summary:
A Circumnuclear Disk (CND) of molecular gas occupies the central few parsecs
of the Galactic Center. It is likely subject to turbulent disruptions from
violent events in its surrounding environment, but the effect of such
perturbations has not yet been investigated in detail. Here we perform 3D,
N-body/smoothed particle hydrodynamic (SPH) simulations with an adapted general
turbulence driving method to investigate the CND’s structural evolution, in
particular its reaction to varied scales of injected turbulence. We find that,
because of shear flow in the disk, transient arcs of gas (streams) naturally
arise when turbulence is driven on large scales (up to ~4 pc), as might occur
when a supernova blast wave encounters the CND. Because energetic events arise
naturally and often in the central parsecs of our Galaxy, this result suggests
that the transient structures that characterize the CND do not imply that the
CND itself is a transient structure. We also note that features similar to the
density concentrations, or "clumps", detailed in literature emerge when we
account for the observed orientation of the disk and for the spatial resolution
of observations. As such, clumps could be an artifact of observational
limitations.
| Search Query: ArXiv Query: search_query=au:”R. Morris”&id_list=&start=0&max_results=10