| Author(s): |
Total Authors: 3
|
| Affiliation: | [1] Univ Cape Town, ACGC, ZA-7701 Cape Town - South Africa
[2] Univ Cape Town, Dept Math & Appl Math, ZA-7701 Cape Town - South Africa
[3] Univ Sao Paulo, Inst Astron Geofis & Ciencias Atmosfer IAG USP, BR-05508900 Sao Paulo, SP - Brazil
[4] Minist Educ Brazil, CAPES Fdn, Brasilia, DF - Brazil
[5] Univ Politecn Valencia, ITACA Inst, Biomed Informat Grp IBIME, Valencia - Spain
Total Affiliations: 5
|
| Document type: | Journal article |
| Source: | REVISTA MEXICANA DE ASTRONOMIA Y ASTROFISICA; v. 52, n. 1, p. 3-10, APR 2016. |
| Web of Science Citations: | 0 |
| Abstract | |
A new method is proposed to infer the Hubble constant H-0 through the observed mean transmitted flux from high-redshift quasars and the baryon acoustic oscillations (BAOs). A semi-analytical model for the cosmological-independent volume density distribution function was adopted; it allowed us to obtain constraints on the cosmological parameters once a moderate knowledge of the Inter Galactic Medium (IGM) parameters is assumed. Our analysis, based on two different samples of Lyman-alpha forest and the BAO measurement, restricts (h, Omega(m)) to the intervals 0.19 <= Omega(m) <= 0.23 and 0.53 <= h <= 0.82 (1 sigma). Although the constraints are weaker compared with other estimates, we point out that, with a bigger sample and a better knowledge of the IGM, this method could provide complementary results to measure the Hubble constant independently of the cosmic distance ladder. (AU) | |
| FAPESP's process: | 04/13668-0 - Cosmology in the era of precision: dark energy, dark matter and background cosmic radiation |
| Grantee: | Jose Ademir Sales de Lima |
| Support Opportunities: | Research Projects - Thematic Grants |