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Substorm Ion Injection Over Broad Local Time Sector

Substorm Ion Injection Over Broad Local Time Sector. Energetic Neutral Atom Images IMAGE/HENA, 6/10/00. • Broad injection front, not a narrow sector. Common understanding had been a narrow Local Time Injection. • All energies drift at a rate consistent with injection at about L = 7R E ;

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Substorm Ion Injection Over Broad Local Time Sector

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  1. Substorm Ion InjectionOver Broad Local Time Sector Energetic Neutral Atom Images IMAGE/HENA, 6/10/00 • • Broad injection front, not a narrow sector. Common understanding had been a narrow Local Time Injection. • • All energies drift at a rate consistent with injection at about L = 7RE; • • 6 hr drift period @ 22 keV • • 3 hr drift period @ 45 keV <---- ~0.75 hours, 45 keV -----> 360° Drift Period as a function of Energy, L Figure adapted from Shultz & Lanzerotti, 1974 <---- ~1.5 hours, 22 keV ----->

  2. Substorm Ion InjectionOver Broad Local Time Sector 1030UT At 22 keV, compare the appearance of data (right) with simulation of M.-C. Fok (simulated ion flux, anisotropy, and image, from left). 1150UT

  3. Substorm Ion InjectionOver Broad Local Time Sector 1050UT At 45 keV, compare the appearance of data (right) with simulation of M.-C. Fok (simulated ion flux, anisotropy, and image, from left). 1140UT

  4. Substorm Ion InjectionOver Broad Local Time Sector Movie of data (left), simulated ENA (middle), and simulated ion flux (right) Simulation courtesy of M.-C. Fok.

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