SP-345 Evolution of the Solar System

 

FIGURE 16.6.1.- A sketch of the series of hetegonic processes leading to formation of secondary bodies around a spinning magnetized central body (not drawn to scale).

FIGURE 16.6.1.- A sketch of the series of hetegonic processes leading to formation of secondary bodies around a spinning magnetized central body (not drawn to scale). The dipole magnet is located at the center of the central body and is aligned with the spin axis. The gas falling from "infinity" into the environment of the central body becomes ionized by collision with the magnetized plasma when its free-fall velocity exceeds the critical velocity for ionization, and the ionized gas then remains suspended in the magnetic field. The rotation and magnetic field together with the conducting plasma surrounding the central body give rise to a homopolar emf which causes a current flow in the plasma This current I together with the magnetic field B give rise to a force I x B which transfers angular motion from the central body to the surrounding plasma. The current also produces prominence -like regions of gas (by pinch effect) which are denser and cooler than the surrounding regions and in these regions the condensation of grains takes place Through viscous effects, the population of grains evolves into a number of jet streams while the noncondensable gases form a thin disc in the equatorial plane.

 
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