dynamical friction


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dynamical friction

See dynamical relaxation.
Collins Dictionary of Astronomy © Market House Books Ltd, 2006

dynamical friction

[dī¦nam·ə·kəl ′frik·shən]
(physics)
The drag force between electrons and ions drifitng with respect to each other.
Sliding friction, in contrast to static friction.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
And the following linear friction model, which includes viscous and Coulomb friction only, is unable to capture the complex dynamical friction behavior.
They show that relatively simple dynamical friction models are often capable of modeling the most dominant friction effects in structures with local joints [16].
The whirling pair will scatter nearby stars, a process known as dynamical friction that draws them closer together.
Merritt's theoretical work suggests that when galaxies merge, dynamical friction quickly draws the two black holes together until they are about 30 light-years apart, but then migration slows before interactions with gas, a stellar bar, or a third black hole might lead to a collision.
In the process he invoked, known as dynamical friction, frequent close encounters among objects fling the more massive objects toward the center of the crowded environment and less massive objects outward.
Massive objects congregate in the Milky Way's core due to a process called dynamical friction. When a black hole has a close encounter with a star, the less-massive object (which is almost always the star) is flung away.