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...

Full description

Bibliographic Details
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
_version_ 1818547960077615104
author C. Gurgiolo
M. L. Goldstein
A. F. Viñas
A. N. Fazakerley
author_facet C. Gurgiolo
M. L. Goldstein
A. F. Viñas
A. N. Fazakerley
author_sort C. Gurgiolo
collection DOAJ
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.
first_indexed 2024-12-12T08:13:37Z
format Article
id doaj.art-73e8a2708cc64f068c244385bf421f04
institution Directory Open Access Journal
issn 0992-7689
1432-0576
language English
last_indexed 2024-12-12T08:13:37Z
publishDate 2012-01-01
publisher Copernicus Publications
record_format Article
series Annales Geophysicae
spelling doaj.art-73e8a2708cc64f068c244385bf421f042022-12-22T00:31:41ZengCopernicus 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
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
title 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_short 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
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