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Imaging X-ray Polarimeter for Solar Flares (IXPS) |
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| Authors: | Michael Hosack J Kevin Black Philip Deines-Jones Brian R Dennis Joanne E Hill Keith Jahoda Albert Y Shih Christian E Urba A Gordon Emslie |
| Institution: | 1. Code 671, NASA??s Goddard Space Flight Center, Greenbelt, MD, 20771, USA 2. ADNET Systems, Inc., 164 Rollins Avenue, Suite 303, Rockville, MD, 20852, USA 3. Rock Creek Scientific, 1200 East-West Hwy, Suite 1411, Silver Spring, MD, 20910, USA 4. Code 662, NASA??s Goddard Space Flight Center, Greenbelt, MD, 20771, USA 5. CRESST/Universities Space Research Association, 10211 Wincopin Circle, Suite 500, Columbia, MD, 21044, USA 6. Department of Physics & Astronomy, Western Kentucky University, Bowling Green, KY, 42101, USA |
| Abstract: | We describe the design of a balloon-borne Imaging X-ray Polarimeter for Solar flares (IXPS). This novel instrument, a Time Projection Chamber (TPC) for photoelectric polarimetry, will be capable of measuring polarization at the few percent level in the 20?C50 keV energy range during an M- or X-class flare, and will provide imaging information at the ??10 arcsec level. The primary objective of such observations is to determine the directivity of nonthermal high-energy electrons producing solar hard X-rays, and hence to learn about the particle acceleration and energy release processes in solar flares. Secondary objectives include the separation of the thermal and nonthermal components of the flare X-ray emissions and the separation of photospheric albedo fluxes from direct emissions. |
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