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Detailed Reference Information |
Burlaga, L.F., Ness, N.F., Wang, Y.-M. and Sheeley, N.R. (1998). Heliospheric magnetic field strength out to 66 AU: Voyager 1, 1978–1996. Journal of Geophysical Research 103: doi: 10.1029/98JA01433. issn: 0148-0227. |
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We discuss Voyager 1 (V1) observations of the heliospheric magnetic field strength from 1978 through 1996. During this period the distance of V1 from the Sun increased from ≈3 AU to 66 AU and its heliographic latitude increased from ≈5 ¿S to 33 ¿N. The magnetic field strength profile observed by V1 is consistent with Parker's spiral field model when one considers (1) the solar cycle variation of the observed magnetic field strength at 1 AU, B1(t) (which is a measure of the source field strength) and (2) the latitudinal and solar cycle variations of the solar wind speed, V(t,&thgr;). Both B1(t) and V(t,&thgr;) make significant contributions to the variation of the magnetic field strength variations observed by V1. There is no evidence for a magnetic flux deficit increasing with distance from the Sun. There is a solar cycle variation of the magnetic field strength in the outer heliosphere, which will affect the modulation of cosmic rays. ¿ 1998 American Geophysical Union |
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Abstract |
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Keywords
Interplanetary Physics, Interplanetary magnetic fields |
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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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