Astronomy and Astrophysics – Astronomy
Scientific paper
May 2000
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000spd....3102100b&link_type=abstract
American Astronomical Society, SPD Meeting #31, #021.00; Bulletin of the American Astronomical Society, Vol. 32, p.829
Astronomy and Astrophysics
Astronomy
Scientific paper
We discuss a new rocket payload, the Advanced Technology Solar Spectroscopic Imager (ATSSI), that will obtain true spectroheliograms from ~ 300 Angstroms to 1.5 Angstroms. Using an array of quantum calorimeter detectors at the focus of a Wolter I telescope, it will obtain approximately 1000 spectra spanning the energy range from 150 eV to 3 keV with ~ 3 eV energy resolution and covering a 3.5 arc-minute by 3.5 arc-minute field of view with 6.25 arc-second pixels. Each spectrum will include spectral lines from ions ranging from C V to S XVI, generated over the temperature range from 600,000 K to > 10,000,000 K. The ATSSI will also obtain full-disk images in lines of Fe XVII, Fe XII, Mg X, Fe IX, Ne VIII, O VI, C IV, and H I, all with resolution of ~ 1-2 arc-seconds, and high-resolution grating spectroheliograms in lines of Fe IX/X, O V/VI, and Mg II. These observations can be used to (a) model the flow of energy in the small structures associated with the chromospheric network, and investigate the nature of their interface with transition region and coronal plasmas; and (b) observe the thermal structure of coronal loops in sufficient detail to determine the spatial distribution of their non-thermal heating mechanism(s).
Barbee Troy W.
Boerner F. X. P.
Cabrera Blas
Deiker Steve
Hoover Richard B.
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