Constraints on the cosmological parameters with three-parameter correlation of Gamma-ray bursts

Understand

As one of the most energetic and brightest events, gamma-ray bursts (GRBs) can be treated as a promising probe of the high-redshift universe.

• Similar to type Ia supernovae (SNe Ia), GRBs with same physical origin could be treated as standard candles.
• We select GRB samples with the same physical origin, which are divided into two groups.
• One group is consisted of 31 GRBs with a plateau phase feature of a constant luminosity followed by a decay index of about -2 in the X-ray afterglow light curves, and the other has 50 GRBs with a shallow decay phase in the optical light curves.