Thanks - I'd found that same definition. But I'm still not 100% sure what the dex^-1 means. I mean, if 1 dex is 10 then maybe 1 dex^-1 is 0.1? But if it's just a constant factor of 0.1 to be applied to each data point then it seems pointless :confused:
I've seen Mpc^-3 dex^-1 used in plots in...
If it helps the number density appears here (at the bottom of the section):
http://www.ias.u-psud.fr/irgalaxies/model.php#IDLSaveSets
"Luminosity Functions of normal galaxies, starburst galaxies, and total galaxies, in units of Mpc-3 dex-1."
Hi,
I've come across a number density expressed in units of Mpc^-3 dex^-1; I understand the Mpc^-3 but not the dex^-1. I know dex is some kind of log scale with n dex = 10^n but I'm not sure what dex^-1 means and was wondering if anyone could help.
Thanks!
So, I have read that the SZ effect is virtually independent of redshift. I follow the argument that the factor of (1+z)^-4 in the surface brightness cancels the (1+z)^4 factor in the photon energy density at the cluster (three factors from space being smaller in each dimension, one from the...