Parametric reconstruction of the cosmological jerk from diverse observational data sets

A parametric reconstruction of the jerk parameter, the third order derivative of the scale factor expressed in a dimensionless way, has been discussed. Observational constraints on the model parameters have been obtained by maximum likelihood analysis of the models using supernova distance modulus data, observational Hubble data, baryon acoustic oscillation data, and cosmic microwave background shift parameter data. The present value of the jerk parameter has been kept open to start with, but the plots of various cosmological parameters, like deceleration parameter q(z), jerk parameter j(z), and dark energy equation of state parameter w(DE)(z) indicate that the reconstructed models are very close to Lambda CDM model with a slight inclination toward a nonphantom behavior of the evolution.