PRIMA: PRIMAger, a far-infrared hyperspectral and polarimetric instrument
Résumé
The PRobe far-Infrared Mission for Astrophysics (PRIMA) is an infrared observatory for the next decade, currently in Phase A, with a 1.8 m telescope actively cooled to 4.5 K. On board, an infrared camera, PRIMAger, equipped with ultra-sensitive kinetic inductance detector (KID) arrays, will provide observers with coverage of midinfrared to far-infrared wavelengths from 24 to 264 µm. PRIMAger will offer two imaging modes: the Hyperspectral mode will cover the 24-84 µm wavelength range with a spectral resolution R≥8, while the Polarimetric mode will provide polarimetric imaging in 4 broad bands, from 80 to 264 µm. These observational capabilities have been tailored to answer fundamental astrophysical questions such as black hole and star-formation co-evolution in galaxies, the evolution of small dust grains over a wide range of redshifts, and the effects of interstellar magnetic fields in various environments, as well as to open a vast discovery space with versatile photometric and polarimetric capabilities.
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