A. O. Benz's research while affiliated with Max Planck Institute for Astronomy and other places
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Publications (12)
Commission 10 aims at the study of various forms of solar activity, including networks, plages, pores, spots, fibrils, surges, jets, filaments/prominences, coronal loops, flares, coronal mass ejections (CMEs), solar cycle, microflares, nanoflares, coronal heating etc., which are all manifestation of the interplay of magnetic fields and solar plasma...
Division II of the IAU provides a forum for astronomers studying a wide range of phenomena related to the structure, radiation and activity of the Sun, and its interaction with the Earth and the rest of the solar system. Division II encompasses three Commissions, 10, 12 and 49, and four working groups. During the last triennia the activities of the...
Division II consists of Commissions 10 (Solar Activity), 12 (Solar Radiation and Structure), and 49 (Interplanetary Plasma and Heliosphere). More detailed information on IAU activities in each of these three areas can be found in the individual reports of the respective Commissions.
The Division II OC briefly considered changes to the structure of...
The Sun’s activity has been evolving in the ascending phase of Solar Cycle 23 since 1996. Similarly, the research on solar activity is also in the ascending phase of a new active period. Numerous new results have been obtained from a large amount of space and ground observations covering a wide spectral range. In particular, observations with YOHKO...
The three contributions to this book are intended as brief but thorough introductions to important aspects of plasma astrophysics for astronomers and graduate students.
This volume presents the lecture notes of the 24th Advanced Course of
the Swiss Society for Astrophysics and Astronomy in March 1994 at Les
Diablerets. In three lectures on magnetohydrodynamics, on kinetic plasma
physics and on particle acceleration leading experts describe the
physical basis of their subjects and extend the discussion to several
a...
This volume presents the lecture notes of the 24th Advanced Course of the Swiss Society for Astrophysics and Astronomy in March 1994 at Les Diablerets. In three lectures on magnetohydrodynamics, on kinetic plasma physics and on particle acceleration leading experts describe the physical basis of their subjects and extend the discussion to several a...
Citations
... Particle acceleration processes provide an alternative way to accelerate particles in the absence of a global electric field. The existing literature (Blandford 1994;Kirk et al. 1994;Melrose 1996) suggests three main approaches to accelerate charged particles in an astrophysical plasma environment: shock acceleration (DSA), coherent electric field acceleration, and stochastic acceleration (STA). ...
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... Many discussions of magnetohydrodynamic (MHD) modelling of solar flares and/or CMEs have appeared (see [143] and references therein) and usually address large-scale destabilisation of the coronal magnetic field. Particle acceleration in solar flares has also been discussed extensively [74,164,116,166,87,168,95,122,35] with the main emphasis being on the actual mechanisms for acceleration (e.g. shocks, turbulence, DC electric fields) rather than the global magnetic context in which the acceleration takes place. ...
... The charge transferred generally increases with the discharge spacing and the dielectric constant of the dielectric and has no direct connection with the gas pressure. Regardless of the frequency and voltage characteristics of the open circuit, the micro-State of the art 8 discharge properties are independent of the external drive circuit and are related to gas properties and geometry of the electrodes. This latest statement may fail for nanosecond or sub nanosecond voltage rise time, where the applied electric field may reach values higher than the breakdown voltage. ...
