- #1

- 83

- 0

[tex]

z= H_0 l (1+\frac{1}{2} (1+q_0) H_0 l)

[/tex]

Where [itex]l[/itex] is the luminosity distance, [itex]H_0[/itex] is the Hubble parameter at the corrent epoch and [itex]q_0[/itex] is the deceleration parameter.

I would like to know how does [itex]z[/itex] changes with time? (I supose it does changes with time...)