# Closing the cosmological loop with the redshift drift

@article{Martins2021ClosingTC, title={Closing the cosmological loop with the redshift drift}, author={Carlos J. A. P. Martins and Catarina S. Alves and J. N. Esteves and A. Lapel and B. G. Pereira}, journal={The Sixteenth Marcel Grossmann Meeting}, year={2021} }

The redshift drift (also known as the Sandage Test) is a model-independent probe of fundamental cosmology, enabling us to watch the universe expand in real time, and thereby to confirm (or not) the recent acceleration of the universe without any model-dependent assumptions. On the other hand, by choosing a fiducial model one can also use it to constrain the model parameters, thereby providing a consistency test for results obtained with other probes. The drift can be measured by the Extremely…

## References

SHOWING 1-10 OF 20 REFERENCES

### Cosmological impact of redshift drift measurements

- PhysicsMonthly Notices of the Royal Astronomical Society: Letters
- 2021

The redshift drift is a model-independent probe of fundamental cosmology, but choosing a fiducial model one can also use it to constrain the model parameters. We compare the constraining power of…

### Forecasts of redshift drift constraints on cosmological parameters

- PhysicsMonthly Notices of the Royal Astronomical Society
- 2019

Cosmological observations usually map our present-day past light cone. However, it is also possible to compare different past light cones. This is the concept behind the redshift drift, a…

### Real-time cosmography with redshift derivatives

- Physics
- 2016

The drift in the redshift of objects passively following the cosmological expansion has long been recognized as a key model-independent probe of cosmology. Here, we study the cosmological relevance…

### Cosmic dynamics in the era of Extremely Large Telescopes

- Physics
- 2008

The redshifts of all cosmologically distant sources are expected to experience a small, systematic drift as a function of time due to the evolution of the Universe's expansion rate. A measurement of…

### The ACCELERATION programme: I. Cosmology with the redshift drift

- Physics
- 2019

Detecting the change of a cosmological object’s redshift due to the time evolution of the Universal expansion rate is an ambitious experiment that will be attempted with future telescope facilities.…

### Method for direct measurement of cosmic acceleration by 21-cm absorption systems.

- PhysicsPhysical review letters
- 2014

The direct observability using recession velocity drifts (Sandage-Loeb effect) of 21-cm hydrogen absorption systems in upcoming radio surveys is examined, finding that for a CHIME-like survey with a decade time span, it can detect the acceleration of a ΛCDM universe with 5σ confidence.

### TOWARD A DIRECT MEASUREMENT OF THE COSMIC ACCELERATION

- Physics
- 2012

We present precise H i 21 cm absorption line redshifts observed in multiple epochs to directly constrain the secular redshift drift or the cosmic acceleration, Δv/Δt○. A comparison of literature…

### ACCELERATING UNIVERSES WITH SCALING DARK MATTER

- Physics
- 2000

Friedmann–Robertson–Walker universes with a presently large fraction of the energy density stored in an X-component with wX<-1/3, are considered. We find all the critical points of the system for…

### The Cosmic Linear Anisotropy Solving System (CLASS) III: Comparision with CAMB for LambdaCDM

- Computer Science
- 2011

By confronting the two independent Boltzmann codes CLASS and CAMB, we establish that for concordance cosmology and for a given recombination history, lensed CMB and matter power spectra can be…