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Old 06-April-2008, 03:55 PM
trinitree88 trinitree88 is offline
Order of Kilopi
 
Join Date: Sep 2005
Location: Massachusetts
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Wink stochastic cooling

Quote:
Originally Posted by Jim View Post
Refreshments. Many groups continue to exist long after they are no longer necessary or useful because someone keeps bringing really good refershments to the meetings.

I think this may explain the longevity of Congress.
Jim. Boy, if that isn't the truth. Speaking of truth, though, the circulation of particle/antiparticle streams, after being created in pairs, involves stochastic cooling. Since the streams travel in countercirculating circles, their bunching can be estimated. If some have higher energies, a time signal is sent across the ring electronically, while the kinematics dictates that the bunch takes the semicircular path. The time signal arrives at an accelerating/decelerating point with sufficient lead to make a "bunching" correction...cooling the "hot" ones, warming the "cool" ones....like a drill sergeant barking orders to recruits. That's the essence of stochastic cooling. So they end up with pretty well matched energies. Consequently, when the diverter kicks them out of the circulation, to an interaction area.....the possibility that a particle/antiparticle pair will have net velocity of < 11 km/sec is not nil at all, and if a mini-black hole is created there, it could drift like ball lightning.
I'd say the argument from the Milky Way is more obvious. Nothing prevents a black hole from forming this way by the cosmic rays that bombard us every second. Yet we see no "disappearance" of arms of the Milky Way, or star clusters, or individual stars. We do see quasars that have blinked out in surveys, but that can be from transverse velocities carrying them out of gas clouds the way pulsars do. So it seems a lot of paranoia over nothing. pete.
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A third rate theory forbids.
A second rate theory explains after the fact.
A first rate theory predicts.
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