The Bulletin of The Korean Astronomical Society (천문학회보)
- Volume 45 Issue 1
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- Pages.48.3-48.3
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- 2020
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- 1226-2692(pISSN)
Model-independent test of gravity
Abstract
Using redshift-space distortion, I reconstruct the growth history as a smooth function using model independent methods. Assuming general relativity, I obtain the expansion history independently of the dark energy model, and test it to the supernovae data. The results are consistent with general relativity as gravity and the cosmological constant as dark energy, although interestingly negative dark energy densities are not ruled out by the data at z~0.7 to 1.
Keywords