Abstract Details
| Name: Ashutosh Tripathi Affiliation: Research Assistant Conference ID: ASI2016_804 Title : Gamma Ray Bursts as cosmological probe Authors and Co-Authors : H. K. Jassal Assistant Professor Abstract Type : Poster Abstract Category : General Relativity and Cosmology Abstract : Recent work has shown that Supernovae of type Ic which are associated with Gamma Ray Bursts (GRBs) are potential candidates for standard candles. We constrain cosmological parameters using this data and combine it with the cosmology independent calibrated distance moduli of GRBs at high redshifts. The constraints obtained are significantly better than those obtained earlier, not only for models with constant equation of state but also those where dark energy equation of state is a function of time. We compare the results with those obtained from other observations. The cosmological constant model is consistent with these observations. The constraints obtained from GRBs are correlated with those obtained from type Ia supernovae data and are orthogonal to constraints obtained from baryon acoustic oscillation observations. |