Heavy Ions as a Probe of Solar Wind MHD Turbulence in SEP Events

Details Heavy Ions as a Probe of Solar Wind MHD Turbulence in SEP Events Heavy Ions as a Probe of Solar Wind MHD Turbulence in SEP Events

May 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009agusmsh23a..05l&link_type=abstract

American Geophysical Union, Spring Meeting 2009, abstract #SH23A-05

Physics

7807 Charged Particle Motion And Acceleration, 7833 Mathematical And Numerical Techniques (0500, 3200), 7857 Stochastic Phenomena (3235, 3265, 4475), 7859 Transport Processes

Scientific paper

Heavy ions, having a broad range of charge to mass ratios, offer a powerful tool to understand the process of transport in Solar Energetic Particle (SEP) events. Earlier works [Cohen et al. 1999, 2005, Mason et al. 2006] have suggested that certain ordering exists for the spectral forms and time intensity profiles and such orderings are closely related to the power spectrum of the interplanetary solar wind MHD turbulence. In this work, we extend our earlier work and examine the relationship between the power law index (q) of the interplanetary power spectrum and the (A/Q) dependence of the observed time intensity profile. In particular, we separate the time intensity profile into an initial peak phase and a later decay phase and study how the shape of each phase may depend on q and (Q/A). Knowledge of such a dependence will make it possible to align the time intensity profiles of different heavy ions having different energies. Seeking such an alignment from observations then provides an effective way to probe the solar wind MHD turbulence. The model used here is based on a Monte-Carlo approach that solves the focused transport equation via a stochastic differential equation method. The particle-turbulence interaction is described using an extended Quasi Linear Theory. Some advantages of using a Monte-Carlo technique are that it makes possible to easily investigate the effect of an radial-dependent diffusion coefficient and can treat a moving shock relatively easily. Results and implications from our modeling are shown and discussed.

Affiliated with

Also associated with

No associations

Rating

Heavy Ions as a Probe of Solar Wind MHD Turbulence in SEP Events does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Heavy Ions as a Probe of Solar Wind MHD Turbulence in SEP Events, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Heavy Ions as a Probe of Solar Wind MHD Turbulence in SEP Events will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1108703