Preferred solar longitudes with signatures in the solar wind

Magnetically Preferred Solar Longitudes: Reality?

The observed persistence of specific periodicities detected in time series associated with solar surface magnetic activity over several solar cycles has led to numerous papers supporting the existence of preferred longitudes. Recent analysis of the past 120 years of sunspot number data showed that no observed periodicity remained coherent for durations greater than two 11-year solar cycles. Her...

The solar magnetic field and the solar wind: Existence of preferred longitudes

Direct measurements of the solar wind speed and the radial component of the interplanetary magnetic field acquired over more than three solar cycles are used to search for signatures of a persistent dependence of solar wind properties on olar longitude. Two methods of analysis are used. One finds the rotation period that maximizes theamplitude of longitudinal variations of both interplanetary a...

Kinetic signatures and intermittent turbulence in the solar wind plasma.

A connection between kinetic processes and intermittent turbulence is observed in the solar wind plasma using measurements from the Wind spacecraft at 1 A.U. In particular, kinetic effects such as temperature anisotropy and plasma heating are concentrated near coherent structures, such as current sheets, which are nonuniformly distributed in space. Furthermore, these coherent structures are pre...

Solar Wind Composition Associated with the Solar Activity

The Solar Wind

. ~ydrodyn~mic expansion of the solar corona is the basis for "solar corpusc ular radiatIOn . The qUiet day coronal temperatures of 1 to 2X 106 OK yield a solar wind of several h';lDdred km/sec and a density of 5 to 50 particles/cm3 at the orbit of Earth. The solar ~lVllld draws out m to spa~e t he. lines of fore.e of t he gen eral one-gauss solar field, to give an Il1terplanetary fi eld t hat ...