Rotationally Asymmetric Magnetic Holes in the Solar Wind

Abstract:

Most magnetic holes that have been observed in the solar wind are not “linear.” That is, the direction of the background magnetic field changes direction across the magnetic depression. We present the results of a search of the Ulysses database for these types of magnetic structures, and a comparison is made with previous searches for magnetic holes. The magnetic structures are analyzed to determine their soliton content (see doi:10.1002/2014JA020770). In addition, we numerically integrate these profiles using the derivative nonlinear Schrödinger (DNLS) equation to investigate their stability and soliton nature.