SIMBAD references

2023ApJS..265...58K - Astrophys. J., Suppl. Ser., 265, 58 (2023/April-0)

CMR Exploration. I. Filament Structure with Synthetic Observations.

KONG S., OSSENKOPF-OKADA V., ARCE H.G., KLESSEN R.S. and XU D.

Abstract (from CDS):

In this paper, we carry out a pilot parameter exploration for the collision-induced magnetic reconnection (CMR) mechanism that forms filamentary molecular clouds. Following Kong et al., we utilize Athena++ to model CMR in the context of resistive magnetohydrodynamics (MHD), considering the effect from seven physical conditions, including the ohmic resistivity (η), the magnetic field (B), the cloud density (ρ), the cloud radius R, the isothermal temperature T, the collision velocity vx, and the shear velocity vz. Compared to their fiducial model, we consider a higher and a lower value for each one of the seven parameters. We quantify the exploration results with five metrics, including the density probability distribution function (ρ-PDF), the filament morphology (250 μm dust emission), the B-ρ relation, the dominant fiber width, and the ringiness that describes the significance of the ringlike substructures. The exploration forms straight and curved CMR filaments with rich substructures that are highly variable in space and time. The variation translates to fluctuation in all five metrics, reflecting the chaotic nature of magnetic reconnection in CMR. A temporary B ∝ ρ relation is noticeable during the first 0.6 Myr. Overall, the exploration provides useful initial insights into the CMR mechanism.

Abstract Copyright: © 2023. The Author(s). Published by the American Astronomical Society.

Journal keyword(s): Molecular clouds - Interstellar medium - Magnetic fields - Magnetohydrodynamical simulations - Radiative transfer simulations - Astronomical simulations - Interstellar filaments - Star formation - Star forming regions - Collapsing clouds - Dense interstellar clouds - Plasma astrophysics

Simbad objects: 4

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