The High Energy Solar Spectroscopic Imager - HESSI

Details The High Energy Solar Spectroscopic Imager - HESSI The High Energy Solar Spectroscopic Imager - HESSI

May 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996aas...188.7016d&link_type=abstract

American Astronomical Society, 188th AAS Meeting, #70.16; Bulletin of the American Astronomical Society, Vol. 28, p.941

Physics

1

Scientific paper

HESSI will investigate the physics of particle acceleration and energy release in solar flares through an unprecedented combination of high resolution imaging and spectroscopy of X-rays and gamma rays from 2 keV to 20 MeV during the next solar maximum. It uses Fourier-transform imaging with 12 bi-grid modulation collimators and cooled germanium and silicon detectors mounted on a Sun-pointed spin-stabilized spacecraft in a low-altitude equatorial orbit. HESSI will carry out the first imaging spectroscopy in hard X-rays with 2 arcseconds angular resolution, time resolution to tens of ms, and ~ 1 keV energy resolution; the first gamma-ray line spectroscopy from a spacecraft with ~ 1 keV energy resolution; and the first gamma-ray line and continuum imaging with 20 arcseconds angular resolution.

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