Model-independent cosmographic constraints from DESI 2024

Context . We explore model-independent constraints on the Universe kinematics up to the snap and jerk hierarchical terms, considering the latest baryon acoustic oscillation (BAO) release provided by the DESI collaboration. Aims . We intend to place novel and more stringent constraints on the cosmographic series, incorporating three combinations of data catalogs: the first made by BAO and observational cosmic chronometers, the second made by BAO and type Ia supernovae, and the last including all the cited data sets. Methods . Considering the latest BAO data provided by the DESI collaboration and tackling the r d parameter to span within the range 144,152 Mpc, with a fixed step of δ r d = 2 Mpc, we employed Monte Carlo Markov chain analyses based on the Metropolis algorithm to fix novel bounds on the cosmographic series, fixing the deceleration, q 0 , the jerk, j 0 , and the snap, s 0 , parameters, up to the 2σ level. A comparison between the results of the Planck satellite with those obtained by the DESI collaboration is also reported. Results . Our findings showcase a significant departure in terms of j 0 even at the 1σ confidence level, albeit compatible with the ACDM paradigm in regard to q 0 and s 0 at the 2σ level. Analogously, the h 0 tension appears alleviated in the second hierarchy when including snap. Conclusions . Our method excludes models that significantly depart from the standard cosmological model. Particularly, direct comparisons with the ACDM and w CDM models and the Chevallier-Polarski-Linder parameterisation are explored, which definitively favour the wCDM scenario over other approaches, contradicting the findings of the original DESI collaboration.