Joint Survey Processing of Euclid, Rubin and Roman: Final Report
  The Euclid, Rubin/LSST and Roman (WFIRST) projects will undertake flagship
optical/near-infrared surveys in the next decade. By mapping thousands of
square degrees of sky and covering the electromagnetic spectrum between 0.3 and
2 microns with sub-arcsec resolution, these projects will detect several tens
of billions of sources, enable a wide range of astrophysical investigations by
the astronomical community and provide unprecedented constraints on the nature
of dark energy and dark matter. The ultimate cosmological, astrophysical and
time-domain science yield from these missions will require joint survey
processing (JSP) functionality at the pixel level that is outside the scope of
the individual survey projects. The JSP effort scoped here serves two
high-level objectives: 1) provide precise concordance multi-wavelength images
and catalogs over the entire sky area where these surveys overlap, which
accounts for source confusion and mismatched isophotes, and 2) provide a
science platform to analyze concordance images and catalogs to enable a wide
range of astrophysical science goals to be formulated and addressed by the
research community. For the cost of about 200WY, JSP will allow the U.S. (and
international) astronomical community to manipulate the flagship data sets and
undertake innovative science investigations ranging from solar system object
characterization, exoplanet detections, nearby galaxy rotation rates and dark
matter properties, to epoch of reionization studies. It will also allow for the
ultimate constraints on cosmological parameters and the nature of dark energy,
with far smaller uncertainties and a better handle on systematics than by any
one survey alone.
