Astronomy and Astrophysics – Astrophysics
Scientific paper
Jun 1995
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995stin...9611017s&link_type=abstract
Final Report, 1 Oct. 1990 - 30 Sep. 1994 Chicago Univ., Chicago, IL. Lab. for Astrophysics and Space Research.
Astronomy and Astrophysics
Astrophysics
Cosmic Rays, Crres (Satellite), Earth Magnetosphere, Energetic Particles, Heliosphere, Interplanetary Space, Radiation Belts, Solar Radiation, Heavy Ions, Heavy Nuclei, Isotopes, Linear Energy Transfer (Let), Particle Motion
Scientific paper
Research was continued on the origins, acceleration mechanisms, and the propagation modes of the hierarchy of energetic charged particles found in a wide range of astrophysical settings, extending from the cosmic rays arriving from the depth of the galaxy to the energetic particles in the heliosphere and in the near earth environment. In particular this grant has been a vital support in the investigation of the particle radiations in the earth's magnetosphere. The ONR-604 instrument was launched in July 1990 aboard the CRRES spacecraft. The CRRES mission has been a joint program of NASA and the U.S. Air Force Space Test Program which has provided launch support and telemetry coverage. The spacecraft was placed into a low-inclination eccentric orbit with a period of approximately 10 hours, and thus measured charged particle fluxes in both interplanetary space and in the earth's trapped radiation. ONR-604 performed extremely well, both in interplanetary space and in the intense radiation belt environment. We were able to make detailed measurements of interplanetary fluxes and composition into L=4, or for more than 50% of the orbital period. Thus the experiment produced two valuable datasets, one set outside of L=4 for interplanetary studies, and one set inside of L=4 for radiation belt studies. The data returned by the University of Chicago ONR-604 instrument has been the base for 10 papers on magnetospheric and galactic energetic-particle research.
Garcia-Munoz Moises
Simpson John A.
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