TY - JOUR
T1 - Cosmology with the Roman Space Telescope - Multiprobe strategies
AU - Eifler, Tim
AU - Miyatake, Hironao
AU - Krause, Elisabeth
AU - Heinrich, Chen
AU - Miranda, Vivian
AU - Hirata, Christopher
AU - Xu, Jiachuan
AU - Hemmati, Shoubaneh
AU - Simet, Melanie
AU - Capak, Peter
AU - Choi, Ami
AU - Doré, Olivier
AU - Doux, Cyrille
AU - Fang, Xiao
AU - Hounsell, Rebekah
AU - Huff, Eric
AU - Huang, Hung Jin
AU - Jarvis, Mike
AU - Kruk, Jeffrey
AU - Masters, Dan
AU - Rozo, Eduardo
AU - Scolnic, Dan
AU - Spergel, David N.
AU - Troxel, Michael
AU - Von Der Linden, Anja
AU - Wang, Yun
AU - Weinberg, David H.
AU - Wenzl, Lukas
AU - Wu, Hao Yi
N1 - Funding Information:
This work is supported by NASA ROSES ATP 16-ATP16-0084 and NASA 15-WFIRST15-0008 grants. The Flatiron Institute is supported by the Simons Foundation. Simulations in this paper use High Performance Computing (HPC) resources supported by the University of Arizona TRIF, UITS, and RDI and maintained by the UA Research Technologies department. Part of the research described in this paper was carried out at the Jet Propulsion Laboratory, California Institute of Technology, under a contract with the National Aeronautics and Space Administration. HM has been supported by Grant-in-Aid for Scientific Research from the JSPS Promotion of Science (Nos 18H04350, 18K13561, and 19H05100) and World Premier International Research Center Initiative (WPI), MEXT, Japan. The material is based upon work supported by NASA under award number 80GSFC17M0002.
Publisher Copyright:
© 2021 The Author(s) Published by Oxford University Press on behalf of Royal Astronomical Society.
PY - 2021/10/1
Y1 - 2021/10/1
N2 - We simulate the scientific performance of the Nancy Grace Roman Space Telescope High Latitude Survey (HLS) on dark energy and modified gravity. The 1.6-yr HLS Reference survey is currently envisioned to image 2000 deg2 in multiple bands to a depth of ∼26.5 in Y, J, H and to cover the same area with slit-less spectroscopy beyond z = 3. The combination of deep, multiband photometry and deep spectroscopy will allow scientists to measure the growth and geometry of the Universe through a variety of cosmological probes (e.g. weak lensing, galaxy clusters, galaxy clustering, BAO, Type Ia supernova) and, equally, it will allow an exquisite control of observational and astrophysical systematic effects. In this paper, we explore multiprobe strategies that can be implemented, given the telescope's instrument capabilities. We model cosmological probes individually and jointly and account for correlated systematics and statistical uncertainties due to the higher order moments of the density field. We explore different levels of observational systematics for the HLS survey (photo-z and shear calibration) and ultimately run a joint likelihood analysis in N-dim parameter space. We find that the HLS reference survey alone can achieve a standard dark energy FoM of >300 when including all probes. This assumes no information from external data sets, we assume a flat universe however, and includes realistic assumptions for systematics. Our study of the HLS reference survey should be seen as part of a future community-driven effort to simulate and optimize the science return of the Roman Space Telescope.
AB - We simulate the scientific performance of the Nancy Grace Roman Space Telescope High Latitude Survey (HLS) on dark energy and modified gravity. The 1.6-yr HLS Reference survey is currently envisioned to image 2000 deg2 in multiple bands to a depth of ∼26.5 in Y, J, H and to cover the same area with slit-less spectroscopy beyond z = 3. The combination of deep, multiband photometry and deep spectroscopy will allow scientists to measure the growth and geometry of the Universe through a variety of cosmological probes (e.g. weak lensing, galaxy clusters, galaxy clustering, BAO, Type Ia supernova) and, equally, it will allow an exquisite control of observational and astrophysical systematic effects. In this paper, we explore multiprobe strategies that can be implemented, given the telescope's instrument capabilities. We model cosmological probes individually and jointly and account for correlated systematics and statistical uncertainties due to the higher order moments of the density field. We explore different levels of observational systematics for the HLS survey (photo-z and shear calibration) and ultimately run a joint likelihood analysis in N-dim parameter space. We find that the HLS reference survey alone can achieve a standard dark energy FoM of >300 when including all probes. This assumes no information from external data sets, we assume a flat universe however, and includes realistic assumptions for systematics. Our study of the HLS reference survey should be seen as part of a future community-driven effort to simulate and optimize the science return of the Roman Space Telescope.
KW - cosmological parameters
KW - cosmology: theory
KW - large-scale structure of the Universe
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U2 - 10.1093/mnras/stab1762
DO - 10.1093/mnras/stab1762
M3 - Article
AN - SCOPUS:85116572423
SN - 0035-8711
VL - 507
SP - 1746
EP - 1761
JO - Monthly Notices of the Royal Astronomical Society
JF - Monthly Notices of the Royal Astronomical Society
IS - 2
ER -