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Cosmology with the Roman Space Telescope: synergies with the Rubin Observatory Legacy Survey of Space and Time

Eifler, Tim and Simet, Melanie and Krause, Elisabeth and Hirata, Christopher and Huang, Hung-Jin and Fang, Xiao and Miranda, Vivian and Mandelbaum, Rachel and Doux, Cyrille and Heinrich, Chen and Huff, Eric and Miyatake, Hironao and Hemmati, Shoubaneh and Xu, Jiachuan and Rogozenski, Paul and Capak, Peter and Choi, Ami and Doré, Olivier and Jain, Bhuvnesh and Jarvis, Mike and Kruk, Jeffrey and MacCrann, Niall and Masters, Dan and Rozo, Eduardo 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: synergies with the Rubin Observatory Legacy Survey of Space and Time. Monthly Notices of the Royal Astronomical Society, 507 (1). pp. 1514-1527. ISSN 0035-8711. doi:10.1093/mnras/stab533.

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We explore synergies between the Nancy Grace Roman Space Telescope and the Vera Rubin Observatory’s Legacy Survey of Space and Time (LSST). Specifically, we consider scenarios where the currently envisioned survey strategy for the Roman Space Telescope’s High Latitude Survey (HLS reference), i.e. 2000 deg2 in four narrow photometric bands is altered in favour of a strategy of rapid coverage of the LSST area (to full LSST depth) in one band. We find that in only five months, a survey in the W-band can cover the full LSST survey area providing high-resolution imaging for >95 per cent of the LSST Year 10 gold galaxy sample. We explore a second, more ambitious scenario where the Roman Space Telescope spends 1.5 yr covering the LSST area. For this second scenario, we quantify the constraining power on dark energy equation-of-state parameters from a joint weak lensing and galaxy clustering analysis. Our survey simulations are based on the Roman Space Telescope exposure-time calculator and redshift distributions from the CANDELS catalogue. Our statistical uncertainties account for higher order correlations of the density field, and we include a wide range of systematic effects, such as uncertainties in shape and redshift measurements, and modelling uncertainties of astrophysical systematics, such as galaxy bias, intrinsic galaxy alignment, and baryonic physics. We find a significant increase in constraining power for the joint LSST + HLS wide survey compared to LSST Y10 (FoM+(HLSwide) = 2.4 FoM_(LSST)) and compared to LSST + HLS (FoM_(HLSwide) = 5.5 FoM_(HLSref)).

Item Type:Article
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URLURL TypeDescription Paper
Eifler, Tim0000-0002-1894-3301
Krause, Elisabeth0000-0001-8356-2014
Hirata, Christopher0000-0002-2951-4932
Huang, Hung-Jin0000-0003-2448-3919
Fang, Xiao0000-0002-5054-9566
Mandelbaum, Rachel0000-0003-2271-1527
Doux, Cyrille0000-0003-4480-0096
Heinrich, Chen0000-0003-0426-1948
Huff, Eric0000-0002-9378-3424
Miyatake, Hironao0000-0001-7964-9766
Hemmati, Shoubaneh0000-0003-2226-5395
Rogozenski, Paul0000-0002-1408-6904
Capak, Peter0000-0003-3578-6843
Doré, Olivier0000-0002-5009-7563
Kruk, Jeffrey0000-0002-5861-7236
Masters, Dan0000-0001-5382-6138
Spergel, David N.0000-0002-5151-0006
Troxel, Michael0000-0002-5622-5212
Wu, Hao-Yi0000-0002-7904-1707
Alternate Title:Cosmology with the Wide-Field Infrared Survey Telescope -- Synergies with the Rubin Observatory Legacy Survey of Space and Time
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 2020 December 16. Received 2020 December 14; in original form 2020 April 11. Published: 01 March 2021. This work is supported by NASA ROSES ATP 16-ATP16-0084 and NASA 15-WFIRST15-0008 grants. Support for MS was provided by the Office of Research and Economic Development, University of California, Riverside through the FIELDS NASA–MIRO programme. 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. Data Availability: The data underlying this article will be shared on reasonable request to the corresponding author.
Group:Infrared Processing and Analysis Center (IPAC)
Funding AgencyGrant Number
NASAATP 16-ATP16-0084
University of California, RiversideUNSPECIFIED
Flatiron InstituteUNSPECIFIED
Simons FoundationUNSPECIFIED
Subject Keywords:cosmological parameters – large-scale structure of the Universe
Issue or Number:1
Record Number:CaltechAUTHORS:20211020-172259803
Persistent URL:
Official Citation:Tim Eifler, Melanie Simet, Elisabeth Krause, Christopher Hirata, Hung-Jin Huang, Xiao Fang, Vivian Miranda, Rachel Mandelbaum, Cyrille Doux, Chen Heinrich, Eric Huff, Hironao Miyatake, Shoubaneh Hemmati, Jiachuan Xu, Paul Rogozenski, Peter Capak, Ami Choi, Olivier Doré, Bhuvnesh Jain, Mike Jarvis, Jeffrey Kruk, Niall MacCrann, Dan Masters, Eduardo Rozo, 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: synergies with the Rubin Observatory Legacy Survey of Space and Time, Monthly Notices of the Royal Astronomical Society, Volume 507, Issue 1, October 2021, Pages 1514–1527,
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:111555
Deposited By: Tony Diaz
Deposited On:20 Oct 2021 22:35
Last Modified:21 Oct 2021 16:41

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