Please use this identifier to cite or link to this item:
|Title:||EFFECT of COHERENT STRUCTURES on ENERGETIC PARTICLE INTENSITY in the SOLAR WIND at 1 AU|
|Authors:||Jeffrey A. Tessein|
William H. Matthaeus
University of Delaware
University of Arizona
|Keywords:||Earth and Planetary Sciences|
|Citation:||Astrophysical Journal. Vol.812, No.1 (2015)|
|Abstract:||© 2015. The American Astronomical Society. All rights reserved.. We present results from an analysis of Advanced Composition Explorer (ACE) observations of energetic particles in the 0.047-4.78 MeV range associated with shocks and discontinuities in the solar wind. Previous work found a strong correlation between coherent structures and energetic particles measured by ACE/EPAM. Coherent structures are identified using the Partial Variance of Increments (PVI) method, which is essentially a normalized vector increment. The correlation was based on a superposed epoch analysis using over 12 years of data. Here, we examine many individual high-PVI events to better understand this association emphasizing intervals selected from data with shock neighborhoods removed. We find that in many cases the local maximum in PVI is in a region of rising or falling energetic particle intensity, which suggests that magnetic discontinuities may act as barriers inhibiting the motion of energetic particles across them.|
|Appears in Collections:||Scopus 2011-2015|
Files in This Item:
There are no files associated with this item.
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.