Mathematics – Logic
Scientific paper
Dec 2000
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000isass..14..219m&link_type=abstract
The Institute of Space and Astronautical Science Report SP No. 14, p. 219-224.
Mathematics
Logic
Interferometry, Infrared, Submillimeter, Michelson Interferometer, Galaxy Formation, Star Formation
Scientific paper
Space-based far IR/submillimeter (FIR/SMM) interferometry is needed to answer fundamental cosmological questions concerning the development of structure in the Universe and could also be used to probe nearby objects such as protostars, young planetary systems, and debris disks in unprecedented detail. We describe concepts for the Space Infrared Interferometric Telescope (SPIRIT) and the Submillimeter Probe of the Evolution of Cosmic Structure (SPECS). Both are imaging and spectral Michelson interferometers operating in the wavelength range ~40-500 micron. The individual light-collecting mirrors are comparable in size and temperature to the HII/L2 primary mirror. SPIRIT, which could be launched in a decade, is built on a deployable boom and has a maximum baseline of ~30-50 m, providing arcsecond resolution in the far-IR. SPECS uses formation flying to attain baseline lengths up to ~1 km, and thus angular resolution comparable to that of the Hubble Space Telescope (HST), the Next Generation Space Telescope (NGST), and the Atacama Large Millimeter Array (ALMA). SPIRIT and SPECS would provide access to many important cooling and diagnostic spectral lines and to the bulk of the thermal emission from dust, and make observations complementary to those obtained with ALMA and NGST.
Leisawitz David
Mather John C.
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