Collapse of Interstellar Molecular Clouds

Authors : E. Rennan PEKÜNLÜ, Esra Tiğrak And Dicle ZENGİN

Pages : 289-298

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Publication Date : 0000-00-00

Article Type : Research Paper

Abstract :In this paper we systematically investigate the length and time scales of an interstellar molecular cloud for collapse under the influence of self--gravity, magnetic field and Coriolis forces. We used Magnetohydrodynamic insert ignore into journalissuearticles values(MHD); equations in linearized form in order to explore the dynamical evolution of perturbations. We found that both the Lorentz force and the Coriolis force support the cloud against self contraction, i.e., they introduce stabilizing effect against gravitational instability. Of the two cloud types with the same physical size, only those threaded by an interstellar magnetic field without rotation or those rotating without magnetic field will survive against gravitational collapse.
Keywords : Magnetohydrodynamics, interstellar clouds, self gravity, Lorentz force, Coriolis force