HR: 0800h
AN: SH31A-1180    [Abstracts]
TI: Imaging Three-Dimensional Heliosphere in EUV with Ultra-High Spectral Resolution
AU: * Gruntman, M
EM: mikeg@usc.edu
AF: Astronautics and Space Technology Division, Viterbi School of Engineering, Univ of Southern California, Los Angeles, CA 90089-1191 United States
AU: Pizzo, V
EM: vic.pizzo@noaa.gov
AF: Space Environment Center, NOAA, 325 Broadway, Boulder, CO 80305-3328 United States
AU: Edelstein, J
EM: jerrye@SSL.berkeley.edu
AF: Space Sciences Laboratory, University of California, Berkeley, CA 94720 United States
AU: Lampton, M
EM: mlampton@ssl.berkeley.edu
AF: Space Sciences Laboratory, University of California, Berkeley, CA 94720 United States
AB: A high-throughput, high-resolution spectrometer for diffuse radiation at 30.4 nm allows a way to map the heliopause and to image the three-dimensional flow pattern of the solar wind, including in the regions over the sun's poles. The radiation reaching an observer would include glow of the interstellar plasma beyond the heliopause and emissions produces by charge exchange of solar wind alpha-particles on interplanetary atomic hydrogen. We show that high spectral resolution would separate these two sources of radiation and distinguish between the high (ecliptic) and slow (polar) solar wind flows. This enabling instrumentation should be able to measure 1 milli-Rayleigh irradiance in 1000 seconds with a 0.005-nm spectral resolution with an angular pixel of a few degrees. The desired performance characteristics can be achieved by combining multiple entrance slits with an optimized spectrometer design.
DE: 7549 Ultraviolet emissions
DE: 7594 Instruments and techniques
DE: 2124 Heliopause and solar wind termination
DE: 2164 Solar wind plasma
DE: 2194 Instruments and techniques
SC: SPA-Solar and Heliospheric Physics [SH]
MN: 2004 AGU Fall Meeting