Astronomy and Astrophysics – Astrophysics
Scientific paper
Jan 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011aas...21742505d&link_type=abstract
American Astronomical Society, AAS Meeting #217, #425.05; Bulletin of the American Astronomical Society, Vol. 43, 2011
Astronomy and Astrophysics
Astrophysics
Scientific paper
The Wide Field Infrared Space Telescope, WFIRST, was recommended as the highest priority mission for the next decade by the National Research Council in their 2010 report "New Worlds, New Horizons in Astronomy and Astrophysics.” The mission aims to measure the properties of dark energy via three different techniques: weak lensing, baryon acoustic oscillations and detecting distant supernova explosions. WFIRST will also search for micro-lensing events caused by extrasolar planets, and perform a near infrared sky survey.
Here, we present a fresh look at WFIRST by tracing the science and mission requirements to the three mission concepts that formed the basis of WFIRST and incorporating them into a consistent set. We expect that these requirements will further evolve as NASA evolves the program and use this representative set as an interim solution. From there, we highlight the requirements that are expected to drive the design and evaluate current capabilities based on current and past missions such as the James Webb Space Telescope, the Space Interferometry Mission, and other mission concepts. We ask what makes the project hard to do. What have we learned from other missions that we can bring to WFIRST? Are there any options that would significantly reduce cost or risk while preserving the science return? Finally, we present a preliminary design concept and identify key trades that will lead to a robust, affordable design that meets all science and mission requirements.
We conclude with a preview of future work we expect to perform over the next year.
Casement Lyla Suzanne
Danner Rolf
Lillie Chuck
Lo Amy
Oleas Gina
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