Recent Advances in understanding particle acceleration processes in solar flares

V. V. Zharkova, K. Arzner, A. O. Benz, P. Browning, C. Dauphin, A. G. Emslie, L. Fletcher, E. P. Kontar, G. Mann, M. Onofri, V. Petrosian, R. Turkmani, N. Vilmer, L. Vlahos

    Research output: Contribution to journalArticlepeer-review


    We review basic theoretical concepts in particle acceleration, with particular emphasis on processes likely to occur in regions of magnetic reconnection. Several new developments are discussed, including detailed studies of reconnection in three-dimensional magnetic field configurations (e.g., current sheets, collapsing traps, separatrix regions) and stochastic acceleration in a turbulent environment. Fluid, test-particle, and particle-in-cell approaches are used and results compared. While these studies show considerable promise in accounting for the various observational manifestations of solar flares, they are limited by a number of factors, mostly relating to available computational power. Not the least of these issues is the need to explicitly incorporate the electrodynamic feedback of the accelerated particles themselves on the environment in which they are accelerated. A brief prognosis for future advancement is offered. © 2011 Springer Science+Business Media B.V.
    Original languageEnglish
    Pages (from-to)357-420
    Number of pages63
    JournalSpace Science Reviews
    Issue number1-4
    Publication statusPublished - Sept 2011


    • Sun: acceleration
    • Sun: energetic particles
    • Sun: flares
    • Sun: X-rays


    Dive into the research topics of 'Recent Advances in understanding particle acceleration processes in solar flares'. Together they form a unique fingerprint.

    Cite this