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Vorticity generation behind interstellar shock fronts

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It is shown that the development of vorticity in the wake of interstellar shocks provides a viable mechanism for the establishment of angular momentum in the interstellar medium (ISM). A plausible upper limit to the vorticity is estimated as a function of shock strength, geometry, and speed. Observations of rotating interstellar clouds and of stellar rotation in open clusters compare favourably with model predictions.

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Fleck, R.C. Vorticity generation behind interstellar shock fronts. Astrophys Space Sci 182, 81–84 (1991). https://doi.org/10.1007/BF00646443

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  • Model Prediction
  • Angular Momentum
  • Vorticity
  • Shock Front
  • Interstellar Medium