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Cosmology with the Roman Space Telescope – multiprobe strategies

Eifler, Tim and Miyatake, Hironao and Krause, Elisabeth and Heinrich, Chen and Miranda, Vivian and Hirata, Christopher and Xu, Jiachuan and Hemmati, Shoubaneh and Simet, Melanie and Capak, Peter and Choi, Ami and Doré, Olivier and Doux, Cyrille and Fang, Xiao and Hounsell, Rebekah and Huff, Eric and Huang, Hung-Jin and Jarvis, Mike and Kruk, Jeffrey and Masters, Dan and Rozo, Eduardo and Scolnic, Dan and Spergel, David N. and Troxel, Michael and von der Linden, Anja and Wang, Yun and Weinberg, David H. and Wenzl, Lukas and Wu, Hao-Yi (2021) Cosmology with the Roman Space Telescope – multiprobe strategies. Monthly Notices of the Royal Astronomical Society, 507 (2). pp. 1746-1761. ISSN 0035-8711. doi:10.1093/mnras/stab1762.

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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.

Item Type:Article
Related URLs:
URLURL TypeDescription
Eifler, Tim0000-0002-1894-3301
Miyatake, Hironao0000-0001-7964-9766
Krause, Elisabeth0000-0001-8356-2014
Heinrich, Chen0000-0003-0426-1948
Hirata, Christopher0000-0002-2951-4932
Hemmati, Shoubaneh0000-0003-2226-5395
Capak, Peter0000-0003-3578-6843
Doré, Olivier0000-0002-5009-7563
Doux, Cyrille0000-0003-4480-0096
Fang, Xiao0000-0002-5054-9566
Hounsell, Rebekah0000-0002-0476-4206
Huff, Eric0000-0002-9378-3424
Huang, Hung-Jin0000-0003-2448-3919
Jarvis, Mike0000-0002-4179-5175
Kruk, Jeffrey0000-0002-5861-7236
Masters, Dan0000-0001-5382-6138
Rozo, Eduardo0000-0002-1666-6275
Scolnic, Dan0000-0002-4934-5849
Spergel, David N.0000-0002-5151-0006
Troxel, Michael0000-0002-5622-5212
von der Linden, Anja0000-0002-3881-7724
Wang, Yun0000-0002-4749-2984
Weinberg, David H.0000-0001-7775-7261
Wenzl, Lukas0000-0001-5245-2058
Wu, Hao-Yi0000-0002-7904-1707
Additional Information:© 2021 The Author(s). Published by Oxford University Press on behalf of Royal Astronomical Society. This article is published and distributed under the terms of the Oxford University Press, Standard Journals Publication Model ( Accepted 2021 April 21. Received 2021 March 23; in original form 2020 April 26. Published: 01 July 2021. ©2020. All rights reserved. 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. Data Availability: The data underlying this paper will be shared on reasonable request to the corresponding author.
Group:Infrared Processing and Analysis Center (IPAC)
Funding AgencyGrant Number
NASAATP 16-ATP16-0084
Simons FoundationUNSPECIFIED
Japan Society for the Promotion of Science (JSPS)18H04350
Japan Society for the Promotion of Science (JSPS)18K13561
Japan Society for the Promotion of Science (JSPS)19H05100
Ministry of Education, Culture, Sports, Science and Technology (MEXT)UNSPECIFIED
Subject Keywords:cosmological parameters – cosmology: theory – large-scale structure of the Universe
Issue or Number:2
Record Number:CaltechAUTHORS:20211027-162628161
Persistent URL:
Official Citation:Tim Eifler, Hironao Miyatake, Elisabeth Krause, Chen Heinrich, Vivian Miranda, Christopher Hirata, Jiachuan Xu, Shoubaneh Hemmati, Melanie Simet, Peter Capak, Ami Choi, Olivier Doré, Cyrille Doux, Xiao Fang, Rebekah Hounsell, Eric Huff, Hung-Jin Huang, Mike Jarvis, Jeffrey Kruk, Dan Masters, Eduardo Rozo, Dan Scolnic, David N Spergel, Michael Troxel, Anja von der Linden, Yun Wang, David H Weinberg, Lukas Wenzl, Hao-Yi Wu, Cosmology with the Roman Space Telescope – multiprobe strategies, Monthly Notices of the Royal Astronomical Society, Volume 507, Issue 2, October 2021, Pages 1746–1761,
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:111657
Deposited By: Tony Diaz
Deposited On:28 Oct 2021 16:13
Last Modified:28 Oct 2021 16:13

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