Your browser either does not support Javascript, or you have Javascript turned off.
TomDwelly.com
Astro-software engineer for hire
Luminosity to Flux

Simple Luminosity ⇒ Flux conversion page

Warning: Not tested to death, use at own risk!
Note: No allowance is made for K-corrections or redshift-bandwidth effects
Maybe you actually wanted the Flux ⇒ Luminosity converter?

Convert Luminosity ⇒ Flux

Luminosity = input is log(L)?
At distance = using DL =Mpc
OUTPUT Flux = log10F =

Convert Luminosity Density ⇒ Flux Density and Flux

Luminosity density = input is log(L)?
At wavelength = } Fill in one of these
OR at frequency =
OR at Energy =
Assuming a distance = using DL =Mpc
OUTPUT Fν or Fλ = log10 =
Output bandwidth =
OUTPUT ΔλFλ or ΔνFν = log10 =

Note, for redshift-to-distance calculations, this converter uses the analytical Luminosity Distance
approximation of T. Wickramasinghe & T.N. Ukwatta (2010), astroph-1003.0483
Which is valid for flat space cosmologies (i.e. ⇒ ΩΛ+ΩM = 1) only.
Will be using the following (adjustable) cosmological parameters:
H0 = km s-1 Mpc-1, ΩΛ=, ΩM = ⇒ ΩΛ+ΩM=

This page uses a modified version of Jan Moesen's Javascript implemenation of the sprintf() function.