Results 61 to 70 of about 1,446 (180)
Acceleration of the Fast Solar Wind by Solitary Waves in Coronal Holes
, 2000 The purpose of this investigation is to develop a new model for the acceleration of the fast solar wind by nonlinear, time-dependent multidimensional MHD simulations of waves in solar coronal holes.
Ofman, Leon
core
Centennial evolution of monthly solar wind speeds: Fastest monthly solar wind speeds from long‐duration coronal holes [PDF]
, 2017 High‐speed solar wind streams (HSSs) are very efficient drivers of geomagnetic activity at high latitudes. In this paper we use a recently developed ΔH parameter of geomagnetic activity, calculated from the nightside hourly magnetic field measurements of
Lukianova, Renata +8 more
core +1 more source
Propagating MHD Waves in Coronal Holes
, 2010 Coronal holes are the coolest and darkest regions of the upper solar atmosphere, as observed both on the solar disk and above the solar limb. Coronal holes are associated with rapidly expanding open magnetic fields and the acceleration of the high-speed ...
L. Teriaca +12 more
core +1 more source
Unipolarity of the Solar Magnetic Field in Equatorial Coronal Holes
The Astrophysical JournalAbstract A study of the unbalanced magnetic polarity distribution of 70 coronal holes was performed. Data from the Helioseismic and Magnetic Imager were used to examine the photospheric line-of-sight magnetic field ( B LOS ) beneath these coronal holes ...
Khagendra Katuwal, R. T. James McAteer
openaire +2 more sources
, 2009 The fast solar wind originates from polar coronal holes. Recent observations from SoHO suggest that the solar wind is flowing from funnel-shaped magnetic fields anchored in the lanes of the magnetic network at the solar surface.
Banerjee, D., D. Banerjee
core +1 more source
Solar Wind Acceleration in Coronal Holes
, 2002 This paper reviews the current state of our understanding of high-speed solar wind acceleration in coronal holes. Observations by SOHO, coupled with interplanetary particle measurements going back several decades, have put strong constraints on possible explanations for how the protons, electrons, and minor ions receive their extreme kinetic properties.
openaire +2 more sources
The investigation of quasi-separatrix layers in solar magnetic fields
, 2011 The structure of the magnetic field is often an important factor in many energetic processes in the solar corona. To determine the topology of the magnetic field features such as null points, separatrix surfaces, and separators must be found.
Restante, Anna Lisa
core
Coronal mass ejections and their associations with solar flares and coronal holes
, 1992 64-69The results of an analysis of the associations of coronal mass ejections (CMEs) with solar flares and coronal holes are presented. Out of 79 CMEs whose locations and span are known, 10 CMEs circles contain solar flares.
Verma, V K
core
Wave propagation, phase mixing and dissipation in Hall MHD
, 2012 In this thesis the effect of the Hall term in the generalised Ohm’s law on Alfvén (shear) and fast wave propagation and dissipation in the ion cyclotron frequency range is investigated.
Threlfall, James W.
core