Jansky

The jansky (symbol Jy, plural janskys) is a non-SI unit of spectral flux density, or spectral irradiance, used especially in radio astronomy. It is equivalent to 10−26 watts per square metre per hertz. The flux density or monochromatic flux, S, of a source is the integral of the spectral radiance, B, over the source solid angle: The unit is named after pioneering US radio astronomer Karl Guthe Jansky and is defined as (SI) (cgs).

Jansky

The jansky (symbol Jy, plural janskys) is a non-SI unit of spectral flux density, or spectral irradiance, used especially in radio astronomy. It is equivalent to 10−26 watts per square metre per hertz. The flux density or monochromatic flux, S, of a source is the integral of the spectral radiance, B, over the source solid angle: The unit is named after pioneering US radio astronomer Karl Guthe Jansky and is defined as (SI) (cgs).