| Issue |
EPL
Volume 148, Number 4, November 2024
|
|
|---|---|---|
| Article Number | 49003 | |
| Number of page(s) | 7 | |
| Section | Gravitation, cosmology and astrophysics | |
| DOI | https://doi.org/10.1209/0295-5075/ad8fcb | |
| Published online | 25 November 2024 | |
A comparative test of the ΛCDM and Rh = ct cosmologies based on upcoming redshift drift measurements
Department of Physics, The Applied Math Program, and Department of Astronomy, The University of Arizona - Tucson, AZ 85721, USA
Received: 10 April 2024
Accepted: 7 November 2024
A measurement of the redshift drift constitutes a model-independent probe of fundamental cosmology. Several approaches are being considered to make the necessary observations, using i) the Extremely Large Telescope (ELT), ii) the Cosmic Accelerometer, and iii) the differential redshift drift methodology. Our focus in this letter is to assess how these upcoming measurements may be used to compare the predictions of ΛCDM with those of the alternative Friedmann-Lemaître-Robertson-Walker cosmology known as the 
universe, and several other models, including modified gravity scenarios. The ELT should be able to distinguish between and the other models at better than 
for 
after 20 years of monitoring, while the Cosmic Accelerometer may be able to achieve the same result with sources at 
after only 10 years.
© 2024 The author(s)
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