Vertical flows and structures excited by magnetic activity in the Galactic center region

Abstract

The vertical flow structure in the galactic center region remains poorly understood. We analyzed the MHD simulation data by Suzuki et al. (2015) for better understanding. As a result, we found the fast downflows with a speed of ~100 km/s near the foot-points of magnetic loops. These downflows are flowing along a magnetic field line and accelerated by the gravity. The direction of the fast flows is changed by the magnetic loop geometry, as it moves. As a result, not only vertical motions but also azimuthal and radial motions are excited. This feature could be relevant to the observed high velocity dispersion in the position-velocity diagram.

arXiv comment3 pages, 2 figures, modified proceeding based on a poster session at IAU 322 (The Multi-Messenger Astrophysics of the Galactic Centre), correct just one part of coauthor's affiliation

References in corpus (4)

• Formation of Galactic Center Magnetic Loops
• A Detailed Observational Study of Molecular Loops 1 and 2 in the Galactic Center
• Stochastic Noncircular Motion and Outflows Driven by Magnetic Activity in the Galactic Bulge Region
• Temperature and Density in the Foot Points of the Molecular Loops in the Galactic Center; Analysis of Multi-J Transitions of 12CO(J=1-0, 3-2, 4-3, 7-6), 13CO(J=1-0) and C18O(J=1-0)