- #1
wikiwert
- 2
- 0
The following two graphics are supposed to be the same, but they are not (there is something I am not getting right). After the calculation of m ( z ) (magnitude as a function of redshift) I get the plot of the first link:
-Plot at the bottom (NOT the last one) of
http://www.rqgravity.net/Supernova m (z) = constant + 5*log ( 1 + z - (1 + z)^(1/2) )
-Page 7 of http://arxiv.org/abs/astro-ph/9812473
Here the plot is linear; does not diverge in z = 0.
Maybe the answer is that in the second case, the definition of the magnitude includes a filter transmission function (as hinted in Bergstrom, Goobar, Cosmology and particle astrophysics)? I have to hand in this yesterday : P.
-Plot at the bottom (NOT the last one) of
http://www.rqgravity.net/Supernova m (z) = constant + 5*log ( 1 + z - (1 + z)^(1/2) )
-Page 7 of http://arxiv.org/abs/astro-ph/9812473
Here the plot is linear; does not diverge in z = 0.
Maybe the answer is that in the second case, the definition of the magnitude includes a filter transmission function (as hinted in Bergstrom, Goobar, Cosmology and particle astrophysics)? I have to hand in this yesterday : P.
Last edited by a moderator:
