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AMANDA Maps Cosmic Neutrinos

Posted by michael on Thursday July 17, 2003 @09:02AM from the ether dept.

Uosdwis writes "Remember those 'little neutral ones', neutrinos? You know those little guys have no charge, are invisible and just about no mass. Well a University of Wisconsin-Madison professor has created an array, burried in the antarctic, to detect them with help from the National Science Foundation and produced a map of nuetrinos in the cosmos. A different method than the tau neutrinos found a few years ago, and show the 'natural' neutrinos are at a higher energy level."

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Re:Yes and no. by hubie · 2003-07-18 03:19 · Score: 3, Insightful

I don't think I can agree with you, unless my rough calculation is messed up.
The Cosmic Background Radiation at about 900MHz is about 10^(-21) W/(m^2 sr Hz). A 3 W cell phone radiating into a sphere puts out per square meter about 2.5x10^(-10) W/(sr Hz). This means that the strengths of the two signals are equal at about 500,000 meters, or only 500 km. Pluto's diameter is about 2,000 km, so you'd be lost in the noise without even leaving Pluto.