Gravitational instability of interstellar magnetic clouds |
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| Authors: | K K Ghosh J C Bhattacharyya |
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| Institution: | (1) Kavalur Observatory, Indian Institute of Astrophysics, Bangalore, India |
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| Abstract: | The gravitational instability of a nonrotating isothermal gaseous disk permeated by a uniform frozen-in magnetic field is investigated using a fourth-order perturbation technique. From the results it is found that the disk is stable whenn/B
0 < (4/3 3
G)–1/2, wheren andB are the column density of the disk and unperturbed magnetic field, respectively, andG is the gravitational constant. The disk is gravitationally unstable only whenn/B
0 > (4/33
G)–1/2. |
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| Keywords: | |
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