EarthRef.org Reference Database (ERR)
Development and Maintenance by the EarthRef.org Database Team

Detailed Reference Information
Sarris & Malandraki 2003
Sarris, E.T. and Malandraki, O.E. (2003). Dependence of the decay phase of solar energetic electron events on the large-scale IMF structure: ACE observations. Geophysical Research Letters 30: doi: 10.1029/2003GL017921. issn: 0094-8276.

Using recent measurements of energetic electrons (≥38 keV) by the ACE/EPAM experiment, we examine the dependence of the characteristic decay time of two impulsive solar electron events on the large-scale structure of the Interplanetary Magnetic Field (IMF) within which the electrons are emitted. The technique of mapping the solar wind and extrapolating the frozen-in magnetic field is used to obtain the large-scale IMF structure within and beyond the location of the ACE spacecraft. We find that the electron event that occurred within a converging IMF structure exhibits a remarkably longer decay phase compared to the electron event observed inside a diverging IMF configuration. The observations provide strong evidence for the location of magnetic barriers in space beyond 1 AU and their role in determining the decay phase of solar energetic electron events and the establishment and maintenance of particle reservoirs in the heliosphere.

BACKGROUND DATA FILES

Abstract

Keywords
Interplanetary Physics, Corotating streams, Interplanetary Physics, Energetic particles, heliospheric, Interplanetary Physics, Interplanetary magnetic fields, Interplanetary Physics, Solar wind plasma
Journal
Geophysical Research Letters
http://www.agu.org/journals/gl/
Publisher
American Geophysical Union
2000 Florida Avenue N.W.
Washington, D.C. 20009-1277
USA
1-202-462-6900
1-202-328-0566
service@agu.org
Click to clear formClick to return to previous pageClick to submit