A cosmic speed-trap: a gravity-independent test of cosmic acceleration using baryon acoustic oscillations
/ Authors
/ Abstract
We propose a new and highly model-independent test of cosmic acceleration by comparing observations of the baryon acoustic oscillation (BAO) scale at low and intermediate redshifts: we derive a new inequality relating BAO observables at two distinct redshifts, which must be satisfied for any reasonable homogeneous non-accelerating
Journal: Monthly Notices of the Royal Astronomical Society