Illuminating the dark universe with a very high density galaxy redshift survey over a wide area

Yun Wang, Rachel Bean, Peter Behroozi, Chia Hsun Chuang, Ian Dell'antonio, Mark Dickinson, Olivier Dore, Daniel Eisenstein, Ryan Foley, Karl Glazebrook, Luigi Guzzo, Christopher Hirata, Shirley Ho, Michael Hudson, Bhuvnesh Jain, Priyamvada Natarajan, Jeff Newman, Alvaro Orsi, Nikhil Padmanabhan, John PeacockWill Percival, Jason Rhodes, Eduardo Rozo, Lado Samushia, Dan Scolnic, Hee Jong Seo, David Spergel, Michael Strauss, Risa Wechsler, David Weinberg

Research output: Contribution to journalArticlepeer-review


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.

Original languageEnglish (US)
JournalUnknown Journal
StatePublished - Mar 13 2019

ASJC Scopus subject areas

  • General

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