Initial results from the Helios-1 Search-coil Magnetometer experiment
Article Sidebar
Vols. 1-18 (1924-1944), ISSN 0044-2801
Main Article Content
Abstract
The Helios search-coil magnetometer experiments provide a unique potential for studies of electromagnetic plasma wave modes in the solar wind between 0.3–1 A.U. because of excellent background noise levels, high time-resolution and high accuracy. Daily average spectral densities (γ √Hz) in the frequency range from 4.7–220 Hz show a pronounced increase as the sun is approached with complex superposed variations. Their values have a range of more than an order of magnitude. The shock of January 6, 1975 provides an interesting example for the use of high time-resolution spectral data. The fine structure and the long term variations in wave fields after the perpendicular shock are discussed. Also two interesting examples of "magnetic holes" are presented.
ARK: https://n2t.net/ark:/88439/y002056
Permalink: https://geophysicsjournal.com/article/116
Article Details
References
Galeev, A.A. (1976) Collisionless shocks. In: Williams, D.J. (Ed.) Relationships, Proc. Symp. on Solar Planet., Boulder
Gary, S.P., Gerwin, R.A., Forslund, D.W. (1976) Electromagnetic current instabilities. Phys. Fluids, 19:579-586
Hollweg, J.V. (1975) Waves and instabilities in the solar wind. Rev. Geophys. Space Phys. 13:263-289
Lemaire, J.F., Burlaga, L.F. (1976) Diamagnetic boundary layers in the solar wind: kinetic theory. Submitted to Astrophys. Space Sci.
Neubauer, F.M., Musmann, G., Dehmel, G. (1977) Fast magnetic fluctuations in the solar wind: Helios I. Accepted by J. Geophys. Res.
Russell, C.T., Childers, D.D., Coleman, P.J. (1971) Ogo 5 observations of upstream waves in the interplanetary medium: discrete wave pachets. J. Geophys. Res. 76:845-861
Schindler, K. (1969) Laboratory experiments related to the solar wind and the magnetosphere. Rev. Geophys. :51-75
Smith, E.J. (1973) Identification of interplanetary tangential and rotational discontinuities. J. Geophys. Res., 78:2054-2063
Sonnerup, B.U.O., Cahill, Jr., L.J. (1967) Magnetopause structure and attitude from Explorer 12 observations, J. Geophys. Res. 72:171-183
Turner, J.M., Burlaga, L.F., Ness, N.F., Lemaire, J.F. (1976) Magnetic holes in the solar wind, EOS. Trans. Am. Geophys. Union 57:320