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Detailed Reference Information |
Feldman, W.C., Skoug, R.M., Gosling, J.T., McComas, D.J., Tokar, R.L., Burlaga, L.F., Ness, N.F. and Smith, C.W. (1999). Observations of suprathermal electron conies in an interplanetary coronal mass ejection. Geophysical Research Letters 26: doi: 10.1029/1999GL900460. issn: 0094-8276. |
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Solar wind suprathermal electron velocity distributions measured by the SWEPAM experiment aboard ACE were studied to determine the internal magnetic structure of the coronal mass ejection (CME) that passed 1 AU on 4--5 February, 1998. Pitch-angle distributions range from symmetric counter-streaming to complex distributions that include conics. Identification of suprathermal electron conics in interplanetary CMEs (ICMEs) is reported here for the first time. The origin of these conics is highly uncertain. We suggest, however, that the conics may originate in transient electron heating associated with magnetic reconnection within the magnetic legs of the CMEs. Such reconnection generates large, complex magnetic loops that have enhanced anti-solar electric fields at their solar edge to maintain charge neutrality. This field must be sufficiently strong to bind electrons with high pitch angles to the bottom of the loops as they propagate away from the Sun. ¿ 1999 American Geophysical Union |
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Abstract |
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Keywords
Interplanetary Physics, Ejecta, driver gases, and magnetic clouds, Interplanetary Physics, Solar wind plasma |
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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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