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The solar sources of slow solar wind
AIP Conference Proceedings, 1999During its solar wind scanning from pole to pole, Ulysses observed an equatorial band of slow solar wind of ±20°, corresponding to regions above the equatorial coronal helmets. Recently it has been argued that the slow solar wind comes from narrow bright regions called “stalks,” that are the extension of coronal helmets. In this paper we use Hoeksema’s
S. Bravo, X. Blanco-Cano, G. A. Stewart
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Global Network of Slow Solar Wind [PDF]
Journal of Geophysical Research: Space Physics, 2012 The streamer belt region surrounding the heliospheric current sheet (HCS) is generally treated as the primary or sole source of the slow solar wind. Synoptic maps of solar wind speed predicted by the Wang‐Sheeley‐Arge model during selected periods of solar cycle 23, however, show many areas of slow wind displaced from the streamer belt.
Spiro K. Antiochos +2 more
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Advances in Space Research, 2000
Abstract We review our recent research on the formation of the slow solar wind (Einaudi et al. 1998), which we model as a magnetized wake. During its evolution we find the formation of traveling plasmoids, turbulence production, and streamwise filamentation. Turbulence reduces the acceleration and destroys the plasmoids.
G. Einaudi +3 more
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Abstract We review our recent research on the formation of the slow solar wind (Einaudi et al. 1998), which we model as a magnetized wake. During its evolution we find the formation of traveling plasmoids, turbulence production, and streamwise filamentation. Turbulence reduces the acceleration and destroys the plasmoids.
G. Einaudi +3 more
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Formation of the slow solar wind in a coronal streamer
Journal of Geophysical Research: Space Physics, 1999We have investigated a magnetohydrodynamic mechanism that accounts for several fundamental properties of the slow solar wind, in particular its variability, latitudinal extent, and bulk acceleration. In view of the well‐established association between the streamer belt and the slow wind, our model begins with a simplified representation of a streamer ...
EINAUDI, GIORGIO +3 more
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The Long Slow Rise of Solar and Wind
Scientific American, 2013The article discusses renewable energy sources, focusing on the author's argument that transitions to new energy systems are slow. Topics include the historical shifts in energy sources from wood to coal to oil to natural gas, the limited growth potential of "old" renewable sources such as hydroelectric power, and suggestions of government policies ...
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Testing for multifractality of the slow solar wind
Advances in Space Research, 2006Abstract We analyse a time series of the radial component of the Elsasser variable for the low-speed stream of the solar wind plasma representing Alfvenic fluctuations propagating downstream as measured in situ by the Helios spacecraft in the inner heliosphere.
Wiesław M. Macek +2 more
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“Polar” Substorms During Slow Solar Wind
Journal of Geophysical Research: Space PhysicsAbstract “Polar” substorms are identified as substorm‐like disturbances that are exclusively observed at high geomagnetic latitudes (>70° MLAT) and are absent at lower latitudes. Although “polar” substorms typically occur during periods of quiet geomagnetic activity, it is still unclear whether they can develop
Irina Vadimovna Despirak +4 more
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Formation of the slow solar wind in streamers
AIP Conference Proceedings, 1999We have investigated a magnetohydrodynamic mechanism which accounts self-consistently for the variability, latitudinal extent, and bulk acceleration of the slow solar wind. Our model represents a streamer beyond the underlying coronal helmet as a neutral sheet embedded in a plane fluid wake, characterized by two parameters which vary with distance from
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Investigation of the sources of the slow solar wind
AIP Conference Proceedings, 2003Aim of this analysis is to study the variation of the physical conditions of the coronal plasma across the streamer boundary in order to identify the coronal sources of the slow solar wind during the minimum of solar activity. The analysis is based on the observations of equatorial streamers, obtained in the outer corona during the years 1996 and 1997 ...
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Quiescent current sheets in the solar wind and origins of slow wind
Journal of Geophysical Research: Space Physics, 2009Solar wind near the heliospheric current sheet is investigated using Ulysses and ACE data in a superposed epoch analysis for several days on either side of the current sheets. Only data near sunspot minima are used, minimizing the influence of transients. New results are shown for composition and ionization state. Existing results showing a ∼2 day wide
S. T. Suess +3 more
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