Research in Astronomy and Astrophysics

AbstractRecently a f(T) gravity based on the modification of the teleparallel gravity was proposed to explain the accelerated expansion of the universe without the need of dark en-ergy. We use observational data from Type Ia Supernovae, Baryon Acoustic Oscillations, and Cosmic Microwave Background to constrain this f(T) theory and reconstruct the ef-fective equation of state and the deceleration parameter. We obtain the best-fit values of parameters and find an interesting result that the constrained f(T) theory allows for the accelerated Hubble expansion to be a transient effect. Key words: f(T) gravity: cosmology — reconstruction — observation