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Detailed Reference Information |
Lanzerotti, L.J., Maclennan, C.G., Gold, R.E., Armstrong, T.P., Roelof, E.C., Krimigis, S.M., Simnett, G.M., Sarris, E.T., Anderson, K.A., Pick, M. and Lin, R.P. (1995). Measurement of anomalous cosmic ray oxygen at heliolatitudes ~25° to ~64°. Geophysical Research Letters 22: doi: 10.1029/94GL03210. issn: 0094-8276. |
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We report measurements of the oxygen component (0.5--22 MeV/nucl) of the interplanetary cosmic ray flux as a function of heliolatitude. The measurements reported here were made with the Wart telescope of the HI-SCALE low energy particle instrument on the Ulysses spacecraft as the spacecraft climbed from ~24¿ to ~64¿ south solar heliolatitude during 1993 and early 1994. As a function of heliolatitude, the O abundance at 2--2.8 MeV/nucl drops sharply at latitudes above the heliospheric current sheet. The oxygen spectrum obtained above the current sheet has a broad peak centered at an energy of ~2.5 MeV/nucl that is the anomalous O component at these latitudes. There is little evidence for a latitude dependence in the anomalous O fluxes as measured above the current sheet. Within the heliospheric current sheet, the O measurements are composed of both solar and anomalous origin particles. ¿ American Geophysical Union 1995 |
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Abstract |
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Keywords
Interplanetary Physics, Cosmic rays, Interplanetary Physics, Heliopause and solar wind termination |
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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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