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Detailed Reference Information |
Chen, J. and Fritz, T.A. (2001). Energetic oxygen ions of ionospheric origin observed in the cusp. Geophysical Research Letters 28: doi: 10.1029/2000GL012128. issn: 0094-8276. |
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On 8/27/96 from 8 to 10:36 UT the POLAR satellite crossed the dayside cusp and observed very energetic ionospheric O≤+2 ions which had a magnetic moment spectrum, M(E) that followed a power law. Later at 14:45 to 15:30 UT the satellite passed through the ring current at 15-16 MLT where the O≤+2 ions again had a M(E) power law form but with a spectral amplitude that was two orders of magnitude lower. During this period from 8 to 16 UT there were no magnetic storms as Dst had an average value of ~ -5 nT. The comparison of the fluxes at constant M means that the energetic ions in the cusp cannot have a source in the ring current. Arguments are given that the comparison of these sequential measurements of M(E) are valid and that a new mechanism is needed for producing these energetic ionospheric ions observed in the cusp. ¿ 2001 American Geophysical Union |
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BACKGROUND DATA FILES |
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Abstract |
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Keywords
Magnetospheric Physics, Energetic particles, trapped, Magnetospheric Physics, Magnetopause, cusp, and boundary layers, Magnetospheric Physics, Magnetospheric configuration and dynamics, Magnetospheric Physics, Ring current |
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Publisher
American Geophysical Union 2000 Florida Avenue N.W. Washington, D.C. 20009-1277 USA 1-202-462-6900 1-202-328-0566 service@agu.org |
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