Suppose a distant quasar has a redshift of z = 3.0. To obtain the correct value of the distance at which one sees the object, one must use the relativistic formulas. These give an answer of 3500 Mpc. For comparison, what answer does the nonrelativistic calculation give?
A)120 Mpc
B)518 Mpc
C)1230 Mpc
D)12,300 Mpc

Question

Quizplus · Accepted Answer

The nonrelativistic calculation for distance uses the formula d = cz/H0, where c is the speed of light, z is the redshift, and H0 is the Hubble constant. For z = 3.0, this calculation gives approximately 1230 Mpc.

Suppose a Distant Quasar Has a Redshift of Z =