SH51D:
Non-Maxwellian Distribution Functions in Space Plasmas Posters

Submit an Abstract to this Session Please know the abstract submission deadline has passed. There are no exceptions to this deadline and no new abstracts can be submitted.
You can still search the program to see your colleague�s abstract submissions as well as the sessions submitted for the 2016 Fall Meeting. The final program will be released in early October.


Session ID#: 13298

Session Description:
Plasma can deviate from thermodynamic equilibrium if the relaxation via particle collisions occurs on timescales longer than the other characteristic timescales of the plasma evolution.  In the solar wind, this condition is frequently fulfilled. Consequently, the observed distributions often deviate from the entropically favored Maxwellian shape that characterizes thermodynamic equilibrium. Examples of non-Maxwellian features in the distributions of ions and electrons include beams, temperature anisotropies, and non-zero heat flux. If the deviations from equilibrium are strong enough, the plasma drives kinetic micro-instabilities. These instabilities generate waves and reduce the non-thermal features. Importantly, deviations from the Maxwellian equilibrium can modify the dispersion and polarization properties of plasma waves significantly, affecting particle acceleration, turbulence, and plasma heating. This session invites presentations from the theoretical, numerical, and observational perspective to elucidate the effects of non-Maxwellian distribution functions in space plasmas.
Primary Convener:  Daniel Verscharen, University College London, Mullard Space Science Laboratory, London, United Kingdom
Conveners:  Stuart D Bale, University of California Berkeley, Space Sciences Laboratory, Berkeley, CA, United States, Chadi S Salem, SSL, University of California Berkeley, Berkeley, United States and Michael Louis Stevens, Smithsonian Astrophysical Observatory, Cambridge, MA, United States
Chairs:  Daniel Verscharen, University College London, Mullard Space Science Laboratory, London, United Kingdom, Stuart D Bale, University of California Berkeley, Space Sciences Laboratory, Berkeley, CA, United States and Chadi S Salem, SSL, University of California Berkeley, Berkeley, United States
OSPA Liaison:  Daniel Verscharen, University College London, Mullard Space Science Laboratory, London, United Kingdom

Cross-Listed:
  • SM - SPA-Magnetospheric Physics
Index Terms:

7827 Kinetic and MHD theory [SPACE PLASMA PHYSICS]
7829 Kinetic waves and instabilities [SPACE PLASMA PHYSICS]
7863 Turbulence [SPACE PLASMA PHYSICS]
7867 Wave/particle interactions [SPACE PLASMA PHYSICS]

Abstracts Submitted to this Session:

Kinetic Features Observed in the Solar Wind Electron Distributions (Invited) (122053)
Viviane Pierrard, Belgisch Instituut voor Ruimte-Aeronomie, Space Physics, Brussel, Belgium; IASB-BIRA, Brussels, Belgium, Marian Lazar, Ruhr University Bochum, Bochum, Germany and Stefaan Poedts, KU Leuven, Centre for mathematical Plasma-Astrophysics, Department of Mathematics, Leuven, Belgium
Electron Microphysical Processes in the Solar Wind at 1AU: Wind Observations (189421)
Chadi S Salem1, Marc Pulupa2 and Stuart D Bale2, (1)SSL, University of California Berkeley, Berkeley, United States, (2)University of California Berkeley, Space Sciences Laboratory, Berkeley, CA, United States
Solar Wind Core Electrons: Kappa or Maxwellian? (155819)
Andrew P Walsh1, Pedro Osuna2, Sergio Toledo Redondo1, Yannis Zouganelis3, Arnaud Masson4, Anik De Groof5, Daniel Mueller3, Denise Perrone6, Owen Wyn Roberts7, Matthew G Taylor8 and Lucile Turc7, (1)European Space Agency, Villanueva De La Can, Spain, (2)European Space Agency, ESAC, Madrid, Spain, (3)European Space Agency, ESAC, Villanueva De La Can, Spain, (4)European Space Agency, ESAC, SCI-SAA, Madrid, Spain, (5)European Space Agency, ESAC, Villanueva de la Canada, Spain, (6)European Space Agency, ESAC, Villanueva De La Cañada, Spain, (7)European Space Research and Technology Centre, Noordwijk, Netherlands, (8)European Space Research and Technology Centre, Noordwijk Zh, Netherlands
Self-Similarity of the Electron Strahl: Wind Data (132188)
Konstantinos Horaites, University of Wisconsin Madison, Madison, United States and Stanislav Boldyrev, University of Wisconsin Madison, Madison, WI, United States
Identifying and Characterizing Kinetic Instabilities using Solar Wind Observations of Non-Maxwellian Plasmas (Invited) (128459)
Prof. Kristopher Gregory Klein, University of Michigan Ann Arbor, Ann Arbor, MI, United States
Alfvenicity of Ion Drifts at 1AU (170244)
Benjamin L. Alterman, University of Michigan Ann Arbor, Ann Arbor, MI, United States, Michael Louis Stevens, Smithsonian Astrophysical Observatory, Cambridge, MA, United States, Justin Christophe Kasper, University of Michigan Ann Arbor, Climate and Space Sciences and Engineering, Ann Arbor, MI, United States and Andriy Koval, NASA Goddard Space Flight Center, Greenbelt, United States
Theoretical models of non-Maxwellian equilibria for one-dimensional collisionless plasmas (122617)
Oliver Allanson, University of St Andrews, School of Mathematics & Statistics, St Andrews, United Kingdom, Thomas Neukirch, University of St Andrews, St Andrews, KY16, United Kingdom, Fiona Wilson, University of St Andrews, St Andrews, United Kingdom and Sascha Troscheit, University of Waterloo, Department of Pure Mathematics, Waterloo, ON, Canada
Parametric decay of current-driven Langmuir oscillations and wave packet formation in plateau plasmas: Relevance to type III bursts (122535)
Konrad Sauer, Max-Planck-Institute for Solar System Research, Göttingen, Germany (up to 2005), Göttingen, Germany, David Malaspina, University of Colorado, Astrophysical and Planetary Sciences Department, Boulder, United States and Marc Pulupa, University of California Berkeley, Space Sciences Laboratory, Berkeley, CA, United States

See more of: SPA-Solar and Heliospheric Physics