Jansky Definição | Referências Menu de navegação«IAU Style Manual»expandindo-oe

Unidades de medida astronômicas


unidadeAstronomiadensidade de fluxoKarl Janskyondas de rádioVia Láctearadioastronomia




O jansky (símbolo: Jy) é uma unidade usada em Astronomia para medir densidade de fluxo. O nome da unidade foi escolhido em homenagem a Karl Jansky, que em 1932 detectou pela primeira vez ondas de rádio emitidas pela Via Láctea.[1]



Definição |


Utilizada principalmente na radioastronomia, essa unidade é definida pela seguinte expressão:[2]


1 Jy=10−26Wm2⋅Hzdisplaystyle 1 mathrm Jy =10^-26frac mathrm W mathrm m^2 cdot mathrm Hz



Referências



  1. ↑ Illingworth, Valerie (1994). The facts on file dictionary of astronomy (em inglês) 3rd ed. New York: Facts on File. p. 232. ISBN 0-8160-3184-3 


  2. ↑ «IAU Style Manual» (em inglês). União Astronômica Internacional. Consultado em 16 de junho de 2012 






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