galactic noise


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galactic noise

[gə′lak·tik ′nȯiz]
(astronomy)
Radio-frequency noise that originates outside the solar system; it is similar to thermal noise and is strongest in the direction of the Milky Way.
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References in periodicals archive ?
At 160 MHz, the galactic noise available power is on the order of k [T.
Galactic noise is dominant at frequencies below 1 GHz.
Radio astronomers have made maps of the sky to quantify galactic noise power.