Changes

Recall that <math>\beta</math> is a function of z, and r is sensitive to the mass-energy density fraction.

Recall that <math>\beta</math> is a function of z, and r is sensitive to the mass-energy density fraction.

Hartnett plotted the difference <math>M-M_B</math> against redshift for the supernovas studied most recently by Riess and Astier<ref name=Riess/><ref name=Astier/>. He then adjusted the parameters <math>a</math> and <math>\Omega_m</math> to achieve the best statistical fit to the observations. He obtained these values:

Hartnett plotted the difference <math>M-M_B</math> against redshift for the supernovas studied most recently by Riess and Astier<ref name=Reiss/><ref name=Astier/>. He then adjusted the parameters <math>a</math> and <math>\Omega_m</math> to achieve the best statistical fit to the observations. He obtained these values:

<math>a = 0.2284</math>

<math>a = 0.2284</math>