Joint Survey Processing of Euclid, Rubin and Roman: Final Report

Chary, R.-R.; Hélou, G.; Brammer, Gabriel; Capak, P.; Faisst, Andreas L.; Flynn, Dave; Groom, Steven L.; Ferguson, Henry C.; Grillmair, Carl J.; Hemmati, Shoubaneh; Koekemoer, Anton M.; Lee, Bomee; Malhotra, Sangeeta; Miyatake, Hironao; Momcheva, Ivelina; Newman, Jeffrey A.; Masiero, J.; Paladini, R.; Prakash, Abhishek; Rusholme, B.; Smith, Arfon M.; Wood-Vasey, Michael; Teplitz, Harry I.

doi:10.48550/arxiv.2008.10663

Cited by 7 publications

(9 citation statements)

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“…The specific region of the sky has not been defined yet, but the Roman observations will include near-infrared bands, and have angular resolution superior to LSST. The science case for joint processing, including refinement of photometric redshift estimates and improved measurement of weak lensing shear, has been thoroughly explored (e.g., [17]), and aligns with several of the priorities mentioned in Section 2.…”

Section: Continuing Operationsmentioning

confidence: 99%

Snowmass2021 Cosmic Frontier White Paper: Rubin Observatory after LSST

Blum¹,

Digel²,

Drlica-Wagner³

et al. 2022

Preprint

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The Vera C. Rubin Observatory will begin the Legacy Survey of Space and Time (LSST) in 2024, spanning an area of 18,000 deg 2 in six bands, with more than 800 observations of each field over ten years. The unprecedented data set will enable great advances in the study of the formation and evolution of structure and exploration of physics of the dark universe. The observations will hold clues about the cause for the accelerated expansion of the universe and possibly the nature of dark matter. During the next decade, LSST will be able to confirm or dispute if tensions seen today in cosmological data are due to new physics. New and unexpected phenomena could confirm or disrupt our current understanding of the universe. Findings from LSST will guide the path forward post-LSST. The Rubin Observatory will still be a uniquely powerful facility even then, capable of revealing further insights into the physics of the dark universe. These could be obtained via innovative observing strategies, e.g., targeting new probes at shorter timescales than with LSST, or via modest instrumental changes, e.g., new filters, or through an entirely new instrument for the focal plane. This White Paper highlights some of the opportunities in each scenario from Rubin observations after LSST.

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Section: Continuing Operationsmentioning

confidence: 99%

Snowmass2021 Cosmic Frontier White Paper: Rubin Observatory after LSST

Blum¹,

Digel²,

Drlica-Wagner³

et al. 2022

Preprint

View full text Add to dashboard Cite

show abstract

“…Using space observations as priors, the photometry can be improved significantly (e.g. Chary et al 2020;Melchior et al 2018). This demands that the data combination must be done at the pixel level.…”

Section: Blended Galaxiesmentioning

confidence: 99%

“…Different Stage-IV surveys have different designs. How to utilise their data to improve the control of systematics and thus to maximise the science outcome is an important task that has triggered significant studies (Jain et al 2015;Rhodes et al 2017;Chary et al 2020;Eifler et al 2021;Guy et al 2022).…”

Section: Introductionmentioning

confidence: 99%

Potential scientific synergies in weak lensing studies between the CSST and Euclid space probes

Liu,

Meng,

et al. 2022

Preprint

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“…We refer to Melchior et al (in prep. ) for a review of astronomical blending and Chary et al (2020) for a recent overview of the scientific benefits and operational considerations of joint survey processing. Specifically, we model multiple galaxies in simulated Euclid and Rubin images with scarlet.…”

Section: Joint Deblendingmentioning

confidence: 99%

“…Several studies have addressed the complementary nature of these surveys (Capak et al, 2019;Rhodes et al, 2017Rhodes et al, , 2019Scolnic et al, 2018;Chary et al, 2019Chary et al, , 2020, including estimated gains from combining observations at the catalog or at the pixel-level, for specific science cases, such as galaxy shape measurement (Schuhmann et al, 2019), weak lensing and galaxy clustering (Eifler et al, 2020), photometric redshift estimates (Graham et al, 2020), observations of tidal stellar streams (Laine et al, 2018), exoplanet searches Street et al, 2018) and solar system object tracking (Snodgrass et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

Joint survey processing: combined resampling and convolution for galaxy modelling and deblending

Joseph,

Melchior,

Moolekamp

2021

Preprint

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We present an extension of the multi-band galaxy fitting method scarlet which allows the joint modeling of astronomical images from different instruments, by performing simultaneous resampling and convolution. We introduce a fast and formally accurate linear projection operation that maps a pixelated model at a given resolution onto an observation frame with a different point spread function and pixel scale. We test our implementation against the well-tested resampling and convolution method in galsim on simulated images mimicking observations with the Euclid space telescope and the Vera C. Rubin Observatory, and find that it reduces interpolation errors by an order of magnitude or morecompared to galsim default settings. Tests with a wide range of levels of blending show more accurate galaxy models from joint modeling of Euclid and Rubin images compared to separate modeling of each survey by up to an order of magnitude. Our results demonstrate, for the first time, the feasibility and utility of performing non-parametric pixel-level data fusion of overlapping imaging surveys. All results can be reproduced with the specific versions of the codes and notebooks used in this study.

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Joint Survey Processing of Euclid, Rubin and Roman: Final Report

Cited by 7 publications

References 0 publications

Snowmass2021 Cosmic Frontier White Paper: Rubin Observatory after LSST

Snowmass2021 Cosmic Frontier White Paper: Rubin Observatory after LSST

Potential scientific synergies in weak lensing studies between the CSST and Euclid space probes

Joint survey processing: combined resampling and convolution for galaxy modelling and deblending

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