Dear Colleagues,
We wish to invite you to participate in COSPAR event D1.1, which will be held in in Pasadena, California, USA, on 14-22 July 2018. This event is organized by Scientific Commission D – Space Plasmas in the Solar System, including Planetary Magnetospheres – within the COSPAR Scientific Assembly 2018.
An increasing number of observations show that anisotropic energetic particle distributions are ubiquitous in the heliosphere. Examples include solar energetic particles escaping from solar flare sites and those propagating in front of traveling shocks, galactic cosmic rays at Earth, Jovian electrons, and termination shock particles. Among the compelling problems in astrophysics there are the mechanisms of particle acceleration and transport. However, a number of observations do not fit into the standard diffusive shock acceleration scenario, and transport processes different from normal diffusion, i.e., superdiffusion and subdiffusion, are becoming commonly recognized in space plasmas. Energetic particle acceleration is influenced in a fundamental way by the particle anisotropy and the transport properties. The above processes cannot be described with the standard Parker transport equation: While a treatment of anisotropy requires solving the Skilling equation, anomalous diffusion can be addressed on the basis of fractional differential equations and non-Gaussian stochastic processes. Further, a high energy density of accelerated particles, as is expected for both supernova remnant and coronal mass ejection shocks, can create self-generated turbulence and modify the shock structure, leading to nonlinear shock acceleration models.
The influences of particle anisotropy, anomalous transport processes and nonlinear effects on shock acceleration require a revision of the standard models of transport and diffusive shock acceleration, which can be achieved by theoretical and numerical studies. From these, direct comparisons with space and ground based observations can be pursued. Therefore, this event aims at shedding light on: (i) particle acceleration at shock waves; (ii) origin and effects of particle anisotropy; (iii) causes and consequences of anomalous particle transport.
This event addresses both the heliospheric and the astrophysical communities. Contributions of theoretical, numerical, and data analysis studies on the above topics are encouraged.
Scientific Organizing Committee:
Gaetano Zimbardo (University of Calabria, Rende, Italy)
Frederic Effenberger (ISSI, Bern, Switzerland)
Horst Fichtner (Ruhr-Universität Bochum, Germany)
Kobus le Roux (The University of Alabama in Huntsville, USA)
Silvia Perri (University of Calabria, Rende, Italy)
Du Toit Strauss (North-West University, Potchefstroom, South Africa)
List of confirmed invited speakers:
Elena Amato (INAF/Osservatorio Astrofisico di Arcetri, Italy)
Nicolas Bian (University of Glasgow, Scotland, UK)
Nina Dresing (University of Kiel, Germany)
Joe Giacalone (University of Arizona, USA)
Olga Khabarova (IZMIRAN, Russia)
Timo Laitinen (University of Central Lancashire, UK)
Alex Lazarian (University of Wisconsin, USA)
Rick Leske (California Institute of Technology, USA)
Andreas Shalchi (University of Manitoba, Canada)
Ming Zhang (Florida Institute of Technology, USA)
ABSTRACT SUBMISSION DEADLINE is 9 FEBRUARY 2018
https://www.cospar-assembly.org/
https://www.cospar-assembly.org/admin/session_cospar.php?session=710