Kinematic Origin OF Correlations Between Gamma Ray Burst Observables

Recently, several new correlations between gamma ray burst (GRB) observables have been discovered. Like previously well established correlations, they challenge GRB models. Here we show that in the cannonball (CB) model of GRBs, these newly discovered correlations have the same simple kinematic origin as those discovered earlier. They all result from the strong dependence of the observed radiations on the Lorentz and Doppler factors of the jet of highly relativistic plasmoids (CBs) that produces the observed radiations by interaction with the medium through which it propagates.

💡 Research Summary

The paper addresses a set of newly reported empirical correlations among gamma‑ray burst (GRB) observables and demonstrates that they can be understood within the cannonball (CB) model using a single kinematic framework. In the CB picture, each GRB is produced by one or more highly relativistic plasmoids (“cannonballs”) that are ejected with bulk Lorentz factors γ of order 10³–10⁴. The observed radiation is strongly modulated by the Doppler factor δ = 1/