|
| | | | |
| | | |
| Stat |
Members: 3645
Articles: 2'504'928
Articles rated: 2609
25 April 2024 |
|
| | | | |
|
Article overview
| |
|
|
Cosmological parameter estimation for dynamical dark energy models with future fast radio burst observations | | Ze-Wei Zhao
; Zheng-Xiang Li
; Jing-Zhao Qi
; He Gao
; Jing-Fei Zhang
; Xin Zhang
; | | Date: |
2 Jun 2020 | | Abstract: | Fast radio bursts (FRBs) are a mysterious astrophysical phenomenon of bright
pulses emitted at radio frequencies, and it is expected for them to be
frequently detected in the future. The dispersion measures of FRBs are related
to cosmological parameters, and thus FRBs have a potential to be developed into
a new cosmological probe if their data can be largely accumulated in the
future. In this work, we study the capability of future FRB data for improving
cosmological parameter estimation in two dynamical dark energy models. We find
that the simulated FRB data can break the parameter degeneracies inherent in
the current cosmic microwave background (CMB) data. Therefore, the combination
of the CMB and FRB data can significantly improve the constraints on the Hubble
constant and dark energy parameters, compared to those using CMB or FRB alone.
If ten thousand events of FRBs with known redshifts are detected in the future,
they would behave better than the baryon acoustic oscillation (BAO) data in
breaking the parameter degeneracies inherent in the CMB data. We also find that
the combination of FRB and gravitational wave (GW) standard siren data provides
an independent low-redshift probe to verify the results from CMB and BAO data.
For the data combination of CMB, GW, and FRB, it is found that the main
contribution to the constraints comes from the CMB and GW data, but the
inclusion of FRB data still can evidently improve the constraint on the baryon
density. | | Source: | arXiv, 2006.1450 | | Services: | Forum | Review | PDF | Favorites | |
|
|
No review found.
Did you like this article?
Note: answers to reviews or questions about the article must be posted in the forum section.
Authors are not allowed to review their own article. They can use the forum section.
browser Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)
|
| |
|
|
|
|
News, job offers and information for researchers and scientists:
| |
REGISTER