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

Figure 4

The contour confidence levels of in the Cardassian expansion model from the data for 82 GRBs () (dark cyan dash-dotted lines), 580 SNe Ia (blue dashed lines), and 82 GRBs + 580 SNe Ia (red solid lines), respectively. The contours correspond to 1, 2, and confidence regions.