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Study of Baryon Acoustic Oscillations with SDSS DR13 Data and Measurements of Ω<sub>k</sub> and Ω<sub>DE</sub>(a)
Universidad San Francisco de Quito, Quito, Ecuador
- 1 Universidad San Francisco de Quito, Quito, Ecuador
International Journal of Astronomy and Astrophysics·Volume 07 (2017)·Pages 11–27·Published 25 January 2017·DOI10.4236/ijaa.2017.71002
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Abstract
We measure the baryon acoustic oscillation (BAO) observables , , and as a function of red shift z in the range 0.1 to 0.7 with Sloan Digital Sky Survey (SDSS) data release DR13. These observables are independent and satisfy a consistency relation that provides discrimination against miss-fits due to background fluctuations. From these measurements and the correlation angle of fluctuations of the Cosmic Microwave Background (CMB), we obtain , and for dark energy density allowed to vary as . We present measurements of at six values of the expansion parameter a . Fits with several scenarios and data sets are presented. The data is consistent with space curvature parameter and constant.
KeywordsCosmologyDark EnergyBaryon Acoustic Oscillations
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