Magnetic dips in the solar wind.
Abstract
Using magnetic data from the HELIOS1 fluxgate magnetometer, with a 0.2 s resolution, we have investigated the structure of several interplanetary discontinuities involving magnetic dips and rotations of the magnetic field vector. A minimum variance analysis illustrates the behaviour of the magnetic field through the transition. Using this analysis, quite different structures have been isolated and, in particular, narrow transitions resembling almost one dimensional reconnected neutral sheets. For the thinner cases (scale lengths of the magnetic rotation of the order or smaller than 10^{3} km), we find that the observed structures can be the nonlinear effect of a resistive tearing mode instability having developed on an originally one dimensional neutral sheet at the solar corona.
 Publication:

Solar Physics
 Pub Date:
 May 1979
 DOI:
 10.1007/BF00150144
 Bibcode:
 1979SoPh...62..203D
 Keywords:

 Discontinuity;
 Interplanetary Magnetic Fields;
 Magnetic Flux;
 Magnetic Probes;
 Solar Wind;
 Current Sheets;
 Eigenvalues;
 Geomagnetism;
 Graphs (Charts);
 Helios 1;
 Plasma Dynamics;
 Plasmas (Physics);
 Tearing;
 Solar Physics;
 Magnetic Field;
 Solar Wind;
 Field Vector;
 Variance Analysis;
 Nonlinear Effect;
 Magnetic Fields:Solar Wind;
 Solar Magnetic Fields:Structure