Symmetries, magnetic fields, and the shape of molecular cloud cores

Details Symmetries, magnetic fields, and the shape of molecular cloud cores Symmetries, magnetic fields, and the shape of molecular cloud cores

2003-11-11

arxiv.org/abs/astro-ph/0311245v1

"Star Formation in the Interstellar Medium, a workshop in honor of David Hollenbach, Chris McKee, and Frank Shu", eds. F.C. Ad

Astronomy and Astrophysics

Astrophysics

8 pages, no figures

Scientific paper

We develop a formalism wherein the solution of the equations of equilibrium for a self-gravitating, magnetized interstellar cloud may be accomplished analytically, under the only hypotheses that (a) the cloud is scale-free, and (b) is electrically neutral. All variables are represented as series of scalar and vector spherical harmonics, and the equilibrium equations are reduced to a set of coupled algebraic equations for the expansion coefficients of the density and the magnetic vector potential. Previously known axisymmetric solutions are recovered and new non-axisymmetric solutions are found and discussed as models for pre-protostellar molecular cloud cores.

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