: Astronomie: flux density

physical parameter > flux density

flux density

Flux density is the radiant power (energy per unit time) that falls on a detector per unit surface area of the detector per unit bandwidth of the radiation. It thus measures both the spatial (surface) density and a spectral density of the flux received from an astronomical source. Flux density in radio astronomy is measured in janskys (Jy). (Encyclopedia of Science, by David Darling, https://www.daviddarling.info/encyclopedia/F/flux_density.html)

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