View source: R/dimmingFactor.R
dimmingFactor | R Documentation |
Function computes flux dimming factor in a flat cosmology.
dimmingFactor(z, omega.m = 0.27, omega.lambda = 0.73, H.0 = 71)
z |
Redshift |
omega.m |
Omega matter parameter |
omega.lambda |
Omega lambda parameter |
H.0 |
Hubble constant in km/s/Mpc |
Flux dimming factor, unnormalied. Mathematically, it is (1+z)/D.L^2
.
This is the factor that scales luminosity densitiy in the observed
frame to flux density in the observed frame.
A. Harris
Hogg (2000), arXiv:astro-ph/9905116: section 7, part of equation (22)
D.L
z <- seq(0.1, 5, 0.1) df <- dimmingFactor(z) plot(z, df/max(df), t='l', xlab='z', ylab='Normalized dimming factor')
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