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The Virial Balance of Molecular Clumps and Cores in Colliding Magnetized Flows by Weis, Michael; Walch, Stefanie; Seifried, Daniel; Ganguly, Shashwata is a scholarly article available to read on EtoBox.

What is The Virial Balance of Molecular Clumps and Cores in Colliding Magnetized Flows about?

We simulate the formation of molecular clouds in colliding flows of warm neutral medium with the adaptive mesh refinement code {\sc Flash}. We include a chemical network to treat heating and cooling and to follow the formation of molecular gas. For the forming molecular clumps and cores in four different simulations with varying initial magnetic field strength between 0.01 - 5$\,\mu$G, we carry out a full virial analysis including all time-independent surface and volume terms as well as the time-dependent term. The initial magnetic field strength influences the fragmentation properties of the forming cloud because it prohibits motions perpendicular to the field direction and hence alters, or even suppresses, the formation of filamentary substructures. Molecular clump and core formation occurs anyhow. As a result, with increasing field strength, we find more fragments with a smaller average mass; yet the initial field strength is dynamically not relevant for the fragments which constitute our molecular clumps and cores. %yet the magnetic field overall is dynamically negligible for the fragments which constitute our molecular clumps and cores. The molecular clumps are mostly unbound,

Author

Weis, Michael; Walch, Stefanie; Seifried, Daniel; Ganguly, Shashwata

Published

2022

Language

EN