Dark Energy or local acceleration?

TL;DR

This paper explores how an accelerated observer in a decelerating universe perceives redshift similarly to the LambdaCDM model, suggesting local acceleration could mimic dark energy effects.

Contribution

It introduces a model where an observer's acceleration explains observed redshift without invoking dark energy, proposing a new perspective on cosmic acceleration.

Findings

An accelerated observer measures the same redshift as LambdaCDM.

Estimated acceleration is approximately 1.4x10^-9 m/s^2.

Helical motion can resolve peculiar velocity issues.

Abstract

We find that an observer with a suitable acceleration relative to the frame comoving whit the cosmic fluid, in the context of the FRW decelerating universe, measures the same cosmological redshift as the LambdaCDM model. The estimated value of this acceleration is beta = 1.4x10^-9m/s^2. The problem of a too high peculiar velocity can be solved assuming, for the observer, a sort of helical motion.