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Acceleration of Energetic Particles through Reconnection of Weakly Stochastic Magnetic Field

  • Alexandre Lazarian
  • Grzegorz Kowal
  • B. Gouveia dal Pino
  • Ethan T. Vishniac
Conference paper
Part of the Astrophysics and Space Science Proceedings book series (ASSSP, volume 33)

Abstract

Astrophysical media are turbulent and therefore reconnection should be treated in the presence of pre-existing turbulence. We consider the model of fast magnetic reconnection in Lazarian and Vishniac (Astrophys J 517:700–718, 1999) which predicts that the rate of reconnection is controlled by the intensity and the injection scale of turbulent motions. We provide new evidence of successful testing of the model and argue that the model presents a generic set up for astrophysical reconnection events. We study particle acceleration that takes place in volumes of driven turbulence as well turbulent volumes in the presence of large scale reconnection. We show that in the latter case the acceleration is of the first order Fermi type thus supporting the model of acceleration proposed in Gouveia dal Pino and Lazarian (Astron Astrophys 44:845–853, 2005)

Keywords

Solar Wind Magnetic Reconnection Reconnection Rate Reconnection Region Fast Reconnection 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Notes

Acknowledgements

The research of AL is supported by the Center for Magnetic Self-Organization in Laboratory and Astrophysical Plasmas. AL also acknowledged Humboldt Award at the Universities of Cologne and Bochum, as well as the hospitality of the International Institute of Physics (Brazil) and the Vilas Associate Award. GK and EMGDP acknowledge the support by the FAPESP grants no. 2006/50654-3 and 2009/50053-8, and the CNPq grant no. 300083/94-7. This research was also supported by the project TG-AST080005N through TeraGrid resources provided by Texas Advanced Computing Center (http://www.tacc.utexas.edu).

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Copyright information

© Springer-Verlag Berlin Heidelberg 2012

Authors and Affiliations

  • Alexandre Lazarian
    • 1
  • Grzegorz Kowal
    • 2
  • B. Gouveia dal Pino
    • 2
  • Ethan T. Vishniac
    • 3
  1. 1.Astronomy DepartmentUniversity of WisconsinMadisonUSA
  2. 2.Instituto de Astronomia, Geofísica e Ciências AtmosféricasUniversidade de São PauloSão PauloBrazil
  3. 3.Department of Physics and AstronomyMcMaster UniversityHamiltonCanada

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