Title :
Overview of the Canadian hydrogen intensity mapping experiment (CHIME)
Author_Institution :
Dept. of Phys. & Astron., Univ. of British Columbia, Vancouver, BC, Canada
Abstract :
The Baryon Acoustic Oscillations (BAO) which occurred in the early universe have left a distinctive imprint in subsequent large-scale structure, thereby providing a standard, cosmological ruler. Measurements of the apparent diameter of BAO over an appreciable period of cosmic time thus reveal the expansion history of the universe and can provide valuable new data for constraining models of dark energy. Intensity mapping of hydrogen´s 21 cm line over a broad range in frequencies is an exciting new prospect for determining the large scale, three-dimensional structure of the universe in pursuit of this goal.
Keywords :
cosmology; dark energy; BAO; CHIME; Canadian hydrogen intensity mapping experiment; baryon acoustic oscillations; cosmic time period; dark energy model; early universe; large-scale structure; standard cosmological ruler; Dark energy; Energy measurement; Extraterrestrial measurements; Feeds; Hydrogen; Instruments; Mathematical model;
Conference_Titel :
Radio Science Meeting (USNC-URSI NRSM), 2014 United States National Committee of URSI National
Conference_Location :
Boulder, CO
Print_ISBN :
978-1-4799-3119-4
DOI :
10.1109/USNC-URSI-NRSM.2014.6928122
