Laboratory Studies of Fundamental Physics Processes in Space Astrophysical Plasmas

Details Laboratory Studies of Fundamental Physics Processes in Space Astrophysical Plasmas Laboratory Studies of Fundamental Physics Processes in Space Astrophysical Plasmas

Oct 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003aps..dppci1002y&link_type=abstract

American Physical Society, 45th Annual Meeting of the Division of Plasma Physics, October 27-31, 2003, Albuquerque, New Mexico,

Physics

Plasma Physics

Scientific paper

Despite the enormous difference in physical scales, there are striking similarities in the behavior of laboratory and space plasmas. In the recent decade, a fruitful cross fertilization has been initiated between laboratory plasma physicists and space-astrophysicists in multidisciplinary meetings. The advances in laboratory plasma physics, along with the recent surge of space astrophysical data from satellites, have made collaborative research very useful for obtaining new understanding of key space and astrophysical phenomena. The recent rapid advance of numerical simulations has played an important role to bridge laboratory data with space-astrophysical observations. Many common plasma physics mechanisms have been identified in our research fields that study plasma waves, particle acceleration, magnetic reconnection, dynamos, transport and, more generally, plasma's self-organization phenomena. For example, the magnetic reconnection phenomenon is considered to be a key process in the evolution of solar flares, in the dynamics of the earth's magnetosphere and in the formation process of stars. It is also one of the most important self-organization processes in fusion research plasmas. It is crucial for both fields to understand the basic physics of magnetic reconnection. The present talk presents examples of common plasma physics issues which are extensively investigated among laboratory and space astrophysics research. Special focus is put on magnetic self-organization phenomena [1] which include magnetic reconnection [2] and dynamos [3]. During the past decade, many "physics-issue-dedicated" laboratory experiments have been constructed to address the specified physics mechanisms of space-astrophysical phenomena. They can generate fundamental physics processes in a controlled manner and provide well-correlated data of plasma parameters simultaneously at multiple locations. This talk reviews the most recent progress of these dedicated laboratory experiments as well as comparison of the data with space astrophysical observations and numerical simulation results. The talk also covers the goals and principles of the recent new initiatives to attack the common frontier of both laboratory and space astrophysics research. [1] J.B. Taylor, Rev. Modern phys.,vol.58, 741 (1986) [2] M. Yamada, Earth Planets Space, vol.53, 539 (2001) [3] H. Ji and S. Prager, Magnetohydrodynamics, vol.38,191 (2002)

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