What do we know about cosmography

Abstract In the present paper, we investigate the cosmographic problem using the bias–variance trade-off. We find that both the z-redshift and the $$y=z/(1+z)$$ y = z / ( 1 + z ) -redshift can present a small bias estimation. It means that the cosmography can describe the supernova data more accurat...

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Bibliographic Details
Main Authors: Ming-Jian Zhang, Hong Li, Jun-Qing Xia
Format: Article
Language:English
Published: SpringerOpen 2017-06-01
Series:European Physical Journal C: Particles and Fields
Online Access:http://link.springer.com/article/10.1140/epjc/s10052-017-5005-4