Utilizing the Updated Gamma-Ray Bursts and Type Ia Supernovae to Constrain the Cardassian Expansion Model and Dark Energy

Figure 2

Hubble diagram of 580 SNIa (red triangles) and 139 GRBs (dots) obtained using the interpolation method. The 57 GRBs at are obtained by interpolating from SNe Ia data (black dots); and the 82 GRBs at (blue dots) are obtained with the five correlations calibrated with the sample at using the cubic spline interpolation method. The vertical dotted line represents . The solid curve represents the best-fit cosmology for a flat CDM universe: , .