De‐2 photoelectron measurements consistent with a large scale parallel electric field over the polar cap | Zendy

Winningham J. D. | Zendy; Gurgiolo C. | Zendy

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De‐2 photoelectron measurements consistent with a large scale parallel electric field over the polar cap

Author(s) -

Winningham J. D.,

Gurgiolo C.

Publication year - 1982

Publication title -

geophysical research letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.007

H-Index - 273

eISSN - 1944-8007

pISSN - 0094-8276

DOI - 10.1029/gl009i009p00977

Subject(s) - polar , electric field , spacecraft , computational physics , physics , scale (ratio) , field (mathematics) , polar coordinate system , geophysics , astronomy , geometry , mathematics , quantum mechanics , pure mathematics

Winningham and Heikkila (1974) presented observations of “anomalous” photoelectron angular distributions over the polar caps. They interpreted these observations to be indicative of a large scale, outwardly directed, parallel electric field over the polar cap. The parallel field was observed to be spatially and/or temporally variable. New results from DE confirm and elaborate on these results. Some of the problems of data from a spinning spacecraft and low temporal/spatial resolution are alleviated. We reach the same conclusion concerning the possible existance of a large‐scale, low‐voltage parallel field and suggest causes for this field.

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