Effect of overtaking disturbances on a strong cylindrical hydromagnetic shock wave in a self-gravitating gas |
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| Authors: | R P Yadav M Gupta S Kumar |
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| Institution: | (1) Physics Department, Govt. P.G. College, Uttarkashi, 249193, (India);(2) Physics Department, Agra College, 282002 Agra, (India) |
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| Abstract: | The effect of overtaking disturbances upon the free propagation of strong cylindrical hydromagnetic shock through a self-gravitating gas has been studied by an approximating technique developed by Yadav. Assuming an initial density distribution law as  0= r–w, where is the density at the axis of symmetry and  is a constant, the analytical relation for shock velocity and shock strength modified by overtaking waves has been obtained under two conditions: viz., (i) when the applied axial magnetic field is strong and (ii) when the field is weak. The results obtained here are compared with those for a freely propagating shock. The conclusions arrived at agreed with experimental results.It is shown that the applications of the CCW method and the neglect of overtaking disturbances are equivalent. |
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