HR: 11:20h
AN: SH42A-05 INVITED     [Abstracts]
TI: Future Prospects for ENA Imaging of the Outer Heliosphere
AU: * McComas, D J
EM: dmccomas@swri.edu
AF: Southwest Research Institute, 6220 Culebra Road, San Antonio, TX 78238 United States
AB: Recent advances in Energetic Neutral Atom (ENA) imaging have demonstrated the ability to remotely image a variety of space plasmas. Now ENA imaging is poised to let us globally image the plasmas beyond the termination shock, providing the first synoptic measurements of the interstellar boundaries at the edges of our heliosphere. These observations can be achieved with high sensitivity all-sky images, at a variety of energies, provided by large aperture ENA cameras on a simple spinning spacecraft. Such observations will achieve the objective of discovering the global interaction between the solar wind and the interstellar medium by answering four fundamental science questions: (1) What is the global strength and structure of the termination shock, (2) How are energetic protons accelerated at the termination shock, (3) What are the global properties of the solar wind flow beyond the termination shock and in the heliotail, and (4) How does the interstellar flow interact with the heliosphere beyond the heliopause? This objective is central to the NASA's plans as demonstrated by both the 2003 SEC Roadmap and 2002 NRC's Decadal Survey and is specifically identified in the 2003 NASA-wide Strategic Plan. This talk describes the science and general implementation of a mission to make these groundbreaking observations. Further, if the Interstellar Boundary Explorer (IBEX) Small Explorer (SMEX) mission, presently undergoing Phase A study, is selected by the time of the meeting, this talk will provide a more complete presentation of that mission.
DE: 7837 Neutral particles
DE: 2124 Heliopause and solar wind termination
DE: 2151 Neutral particles
DE: 2194 Instruments and techniques
DE: 2704 Auroral phenomena (2407)
SC: SPA-Solar and Heliospheric Physics [SH]
MN: 2004 AGU Fall Meeting