Illuminating the dark universe with a very high density galaxy redshift survey over a wide area
arXiv:1903.06034
Abstract
The nature of dark energy remains a profound mystery 20 years after the discovery of cosmic acceleration. A very high number density galaxy redshift survey over a wide area (HD GRS Wide) spanning the redshift range of 0.5<z<4 using the same tracer, carried out using massively parallel wide field multi-object slit spectroscopy from space, will provide definitive dark energy measurements with minimal observational systematics by design. The HD GRS Wide will illuminate the nature of dark energy, and lead to revolutionary advances in particle physics and cosmology. It will also trace the cosmic web of dark matter and provide key insight into large-scale structure in the Universe. The required observational facility can be established as part of the probe portfolio by NASA within the next decade.
arXiv comment8 pages (including title page and references), 3 figures. Science white paper submitted to Astro2020. arXiv admin note: text overlap with arXiv:1802.01539
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