IAGA in Toulouse - Division IV Symposium

IDIV01 Solar-terrestrial connections: International Living With a Star (Divisions IV and III)

International Living With a Star (ILWS) is the primary vehicle by which the space agencies and equivalent space authorities in nearly 30 countries coordinate activities and projects on Solar-Terrestrial Science. ILWS has a broad scientific coverage encompassing all current research interests, from solar dynamo theory to potential climatic effects of solar variability. In between, classical space plasma problems such as collisionless shocks, magnetic reconnection, substorms, particle acceleration, auroral physics, and magnetosphere-ionosphere-thermosphere coupling make for an exceedingly rich and intrinsically multidisciplinary program. This session will feature presentations by leading scientists from ILWS member countries on how to tackle outstanding problems in Sun-Earth Connection, utilizing modern experimental and theoretical techniques and extant synergy in the international community.

Convener: W. Liu, Canadian Space Agency, 6767 route de l'Aéroport, Saint-Hubert, Québec J3Y 8Y9, Canada; tel +1-613-262-1355; e-mail: William.liu@space.gc.ca
Co-conveners: H. Opgenoorth, ESTEC, the Netherland; M. Guhathakurta NASA HQ, USA; T. Kosugi, ISAS, Japan; L. Zelenyi, IKI, Russia.

GAIV01 The Sun: Its interior, atmosphere and wind

Continuous ground- and space-based observations of the Sun have provided detailed information on the solar interior, extended corona and solar wind. These observations offer a unique capability to investigate the physical processes responsible for the dynamic nature of the Sun. The combination of these observations with realistic modeling is reshaping our understanding of the solar magnetic field and solar activity, and the mechanisms by which the corona is heated and the solar wind is accelerated. The symposium invites contributions
covering observations, theory and modeling of the different aspects of the Sun, including its interior, dynamo, magnetic field, atmosphere, and wind. This broad scope is aimed at stimulating exchange and promoting discussion on physically connected phenomena which are seldom discussed in a single meeting.

Convener: M. P. Miralles, Harvard-Smithsonian Center for Astrophysics, 60 Garden St., MS-50, Cambridge, MA 02138, USA; tel: +1 617-496-7925; fax: +1 617-495-7455;
email: mmiralles@cfa.harvad.edu
Co-conveners: J. Sanchez Almeida, Instituto de Astrofisica de Canarias, Spain; K. Shibata, Kwasan Observatory, Japan

GAIV02 Physics of the interplanetary medium: From micro- to mesoscales

The interplanetary medium is characterized by a multiplicity of scales, ranging from short-scale, high-frequency fluctuations to low-frequency MHD scales to solar rotation and solar cycle scales. These scales interact in a variety of ways such as, for example, cosmic ray modulation, which results from scattering by low-frequency turbulence, and is strongly mediated by the solar cycle. Other examples are the interaction of the solar wind with the local interstellar medium, the acceleration and transport of energetic particles such as solar energetic particles, the evolution and dynamics of turbulence in the interplanetary medium, emission processes, the characteristics of collisionless shock waves, etc. This session solicits contributions that explore the coupling of multiple scales and physical processes in the context of the interplanetary medium.

Convener: G. Zank, Institute of Geophysics and Planetary Physics, University of Califoria, Riverside, CA 92521, USA; tel +1 909 787 4508; fax +1 909 787 4324 or 4509; email: zank@ucrac1.ucr.edu
Co-convevers: T. Terasawa, Graduate School of Science, University of Tokyo, Japan; I. Veselovsky, Institute of Nuclear Physics, Moscow State University, Russia

GAIV03 Foreshock, shock, and magnetosheath physics for collisionless shocks

The session invites contributions of observational and theoretical studies of the basic physical mechanisms of the energy transfer through collisionless shocks, characteristic temporal and spatial scales of the shock front structure, role of the fine spatial structure in the shock thermalization process, generation of waves and their role, as well as the particle acceleration process in the vicinity of the bow shock and interplanetary shocks. Recently, direct in situ measurements of high frequency wave fields in the electron foreshock region allowed to better understand the nature of wave activity observed. Multi-satellite measurements in the magnetosheath combined with new techniques of data analysis provides new impetus to the identification of wave characteristics and their role in ion thermalization process. These and other similar topics, are the primary objectives of this session, namely, to put together recent "in situ" measurements from different space projects with theoretical work and models.

Convener: V. Krasnoselskikh, LPCE/CNRS, Orleans, France; tel +33 (0)2 38 25 52 75; fax +33 (0)2 38 63 12 34; e-mail: vkrasnos@cnrs-orleans.fr
Co-convener: S. D. Bale, Space Sciences Laboratory, University of California, Berkeley, USA

GAIV04 Interaction of fast flowing plasmas with the neutral environments of unmagnetized bodies

This session will summarize recent progress in the space plasma physics of solar system bodies without measurable dynamo magnetic field, including new results from Mars Global Surveyor and Mars Express at Mars and from Cassini around Saturn's moon Titan. The interaction of Mars with the solar wind is mainly of the atmospheric type like Venus with strong modifications of the local ionospheric structure by the crustal fields, and their exosphere makes these planets also share common physical processes with comets. The interaction of Titan with the fast co-rotating plasma inside the magnetosphere of Saturn is another example of such interaction. Numerous open issues include upstream waves, plasma boundaries and their dynamics, atmospheric and ionospheric escapes, etc. Recent results in data analysis and theoretical results, including numerical simulations are encouraged. Papers related to forthcoming space missions (Venus-Express and Rosetta) are also welcome.

Convener: Christian Mazelle, Centre d'Etude Spatiale des Rayonnements, CNRS / University of Toulouse / Observatoire Midi-Pyrénées, 9, Avenue du Colonel Roche, BP 4346, 31029 Toulouse Cedex 4, France; tel. +33 5-6155-7775; fax +33 5-6155-6701; e-mail: christian.mazelle@cesr.fr
Co-conveners: Dave L. Mitchell, Space Sciences Laboratory, University of California, Berkeley, USA; W. Ip, Institute of Astronomy, National Central University, Taiwan.

GAIV05 International Heliophysical Year: A program of gloal research

In 1957 a program of international research was organized as the International Geophysical Year (IGY) to study global phenomena of the Earth and geospace. The IGY involved about 60,000 scientists from 66 nations, working at thousands of stations, from pole to pole to obtain simultaneous, global observations on Earth and in space. There had never been anything like it before. The fiftieth anniversary of the International Geophysical Year will occur in 2007. We propose to organize an international program of scientific collaboration for this time period called the International Heliophysical Year (IHY). Like its predecessors, the IHY will focus on fundamental global questions of Earth science via the following goals: 1) Obtain a coordinated set of observations to study at the largest scale the solar-generated events and their effect life and climate on Earth, 2) Document and report the observations and provide a forum for the development of new scientific results utilizing these observations, 3) Foster international cooperation in the study of Heliophysical phenomena now and in the future, and 4) Communicate the unique scientific results of the IHY to the interested scientific community and to all the peoples of Earth.

The objective of the IHY is to discover the physical mechanisms at work which couple the Earth to events from the Sun and heliosphere. The systematic global study of this connection is to be the central theme of the IHY. This special session will focus on research and campaign efforts which lay the groundwork for the IHY. This session will be used as a forum for discussion of the nature of the IHY, and to solicit suggestions and ideas from the community.

Convener: J. M. Davila, Code 682, NASA Goddard Space Flight Center, Greenbelt, MD 20771, USA; tel +1 301 286-8366; fax +1 301 286-1617; e-mail: joseph.m.davila@nasa.gov
Co-conveners: R. A. Harrison, Rutherford Appleton Laboratory, UK; R. Jain , Physical Research Laboratory, Ahmedabad, India; I. S.Veselovsky, Institute of Nuclear Physics, Moscow State University, Russia.

GAIV06 Reporter Reviews

This session contains reviews of recent advances, both theoretical and observational, on the Sun, solar wind, and heliosphere. Given by active researchers, these reviews will cover a comprehensive range of topics in a manner that is accessible to researchers from other IAGA Divisions, while offering synthesis and context to Division IV scientists. All talks in this session are by invitation only.

Convener: I.H. Cairns, School of Physics, Unviersity of Sydney, NSW 2006, Australia; tel +61 2 9351-3961; fax +61 2 9351-7726; e-mail: cairns@physics.usyd.edu.au

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