A fundamental step towards the cosmological 21 cm signal
作者：YiPeng Jing
摘要：The expansion history and the nature of dark energy are of fundamental importance for understanding the universe.Among various dark energy probes are included the type Ia supernovae(SNe Ia),baryon acoustic oscillations(BAO),cosmic microwave background(CMB),weak lensing,and galaxy clusters.Compared with the conventional optical BAO measurement that requires millions of galaxy spectra,the newly developed 21 cm intensity mapping(IM)technique enables efficient measurements of large-scale structures inaccessible to any other known techniques.
发文机构：School of Physics and Astronomy
关键词：GALAXYCOSMICMICROWAVE
分类号： P15[天文地球—天文学]
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