Direct observations of the formation of the solar wind halo from the strahl

Direct observations of the formation of the solar wind halo from the strahl

Observations of a continual erosion of the strahl and build up of the halo with distance from the sun suggests that, at least in part, the halo may be formed as a result of scattering of the strahl. This hypothesis is supported in this paper by observation of intense scattering of strahl electro...

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Main Authors: C. Gurgiolo, M. L. Goldstein, A. F. Viñas, A. N. Fazakerley
Format: Article
Language:English
Published: Copernicus Publications 2012-01-01
Series:Annales Geophysicae
Online Access:https://www.ann-geophys.net/30/163/2012/angeo-30-163-2012.pdf
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spelling doaj-73e8a2708cc64f068c244385bf421f042020-11-24T22:59:15ZengCopernicus PublicationsAnnales Geophysicae0992-76891432-05762012-01-013016317510.5194/angeo-30-163-2012Direct observations of the formation of the solar wind halo from the strahlC. Gurgiolo0M. L. Goldstein1A. F. Viñas2A. N. Fazakerley3Bitterroot Basic Research, Hamilton, Montana, USAGeospace Science Laboratory, Code 673, NASA Goddard Space Flight Center, Greenbelt, MD, USAGeospace Science Laboratory, Code 673, NASA Goddard Space Flight Center, Greenbelt, MD, USAMullard Space Science Laboratory, University College London, Holmbury St. Mary Dorking, Surrey RH5 6NT, UKObservations of a continual erosion of the strahl and build up of the halo with distance from the sun suggests that, at least in part, the halo may be formed as a result of scattering of the strahl. This hypothesis is supported in this paper by observation of intense scattering of strahl electrons, which gives rise to a proto-halo electron population. This population eventually merges into, or becomes the halo. The fact that observations of intense scattering of the strahl are not common implies that the formation of the halo may not be a continuous process, but one that occurs, in part, in bursts in regions where the conditions responsible for the scattering are optimum.https://www.ann-geophys.net/30/163/2012/angeo-30-163-2012.pdf
collection DOAJ
language English
format Article
sources DOAJ
author C. Gurgiolo
M. L. Goldstein
A. F. Viñas
A. N. Fazakerley
spellingShingle C. Gurgiolo
M. L. Goldstein
A. F. Viñas
A. N. Fazakerley
Direct observations of the formation of the solar wind halo from the strahl
Annales Geophysicae
author_facet C. Gurgiolo
M. L. Goldstein
A. F. Viñas
A. N. Fazakerley
author_sort C. Gurgiolo
title Direct observations of the formation of the solar wind halo from the strahl
title_short Direct observations of the formation of the solar wind halo from the strahl
title_full Direct observations of the formation of the solar wind halo from the strahl
title_fullStr Direct observations of the formation of the solar wind halo from the strahl
title_full_unstemmed Direct observations of the formation of the solar wind halo from the strahl
title_sort direct observations of the formation of the solar wind halo from the strahl
publisher Copernicus Publications
series Annales Geophysicae
issn 0992-7689
1432-0576
publishDate 2012-01-01
description Observations of a continual erosion of the strahl and build up of the halo with distance from the sun suggests that, at least in part, the halo may be formed as a result of scattering of the strahl. This hypothesis is supported in this paper by observation of intense scattering of strahl electrons, which gives rise to a proto-halo electron population. This population eventually merges into, or becomes the halo. The fact that observations of intense scattering of the strahl are not common implies that the formation of the halo may not be a continuous process, but one that occurs, in part, in bursts in regions where the conditions responsible for the scattering are optimum.
url https://www.ann-geophys.net/30/163/2012/angeo-30-163-2012.pdf
work_keys_str_mv AT cgurgiolo directobservationsoftheformationofthesolarwindhalofromthestrahl
AT mlgoldstein directobservationsoftheformationofthesolarwindhalofromthestrahl
AT afvinas directobservationsoftheformationofthesolarwindhalofromthestrahl
AT anfazakerley directobservationsoftheformationofthesolarwindhalofromthestrahl
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