Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
On density and pressure variations in the solar wind plasma
KTH, School of Electrical Engineering (EES), Space and Plasma Physics.
2007 (English)Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

A study of ACE solar wind data at lAU, for the period from 1998 to early 2005, was conducted. This was done in order to find sudden solar wind pressure enhancements accounting for plasma transfer through the magnetopause. In order to get information about the extent and orientation of the structures found, a correlation of found events to data from the Wind satellite was done. The enhancements considered are those with a relative increase exceeding unity. These are found by applying a 1-hour box-car average to the data set. A part of the event distribution was found to vary at periodicities of 11 years, 140 days, and 29 days. Most of the pressure enhancements found were due to a corresponding increase in plasma density. The transverse extent of most of the structures found was rather large, i.e., of the order of 100 Earth radii and the mean orientation of the plasma fronts  were found  to lie between the radial direction and that of  the Archimedean spiral. The duration of most of the structures was shorter than 1 hour. An investigation of the direction of the GSE Z-component of the magnetic field of the events, showed that there was no predominant orientation.

Place, publisher, year, edition, pages
2007. , 66 p.
Series
Trita-EE, ISSN 1653-5146 ; TRITA-EE 2007:035
National Category
Fusion, Plasma and Space Physics
Identifiers
URN: urn:nbn:se:kth:diva-91825OAI: oai:DiVA.org:kth-91825DiVA: diva2:511326
Educational program
Degree of Master
Uppsok
Physics, Chemistry, Mathematics
Supervisors
Examiners
Available from: 2012-03-21 Created: 2012-03-20 Last updated: 2012-03-21Bibliographically approved

Open Access in DiVA

fulltext(27166 kB)156 downloads
File information
File name FULLTEXT01.pdfFile size 27166 kBChecksum SHA-512
b8680287dcb00aa6795d878d2e64ae66111591117731dd45d11be609a2a490bd912f6d04e5c805424484e339d29f7c9edfe7040e047795d0f9cc51e34c49b407
Type fulltextMimetype application/pdf

By organisation
Space and Plasma Physics
Fusion, Plasma and Space Physics

Search outside of DiVA

GoogleGoogle Scholar
Total: 156 downloads
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

urn-nbn

Altmetric score

urn-nbn
Total: 92 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf