WG1: Solar (Simon Plunkett, Bill Abbett)
The Evolution of Sub-Surface Magnetic Fields
In this session we will discuss current theories, computational models, and helioseismologic observations of sub-surface magnetic fields and flows, and will steer our discussion toward how these models contribute to our understanding of the solar origin of space weather.
WG2: Interplanetary (Ian Richardson, Ilia Roussev)
Are CMEs Driving the Solar Wind at Maximum or Along for the Ride?
- What are the origins of variations in solar wind properties during
the solar cycle, e.g., magnetic field strength, composition (He), modulation of cosmic
rays, etc; to what extent do CMEs play a role? - How does the heliosphere respond to
episodes of unusually enhanced solar activity, such as October – November of 2003? - Do (I)CME properties vary during the solar cycle?
WG2-3
Modeling and Observations of Interplanetary shocks, (I)CMEs and SEPs (with Mihir Desai)
- How well do current modeling studies agree with observations?
- What is the 3-D structure of ICMEs and the related shock waves?
- How do shock parameters, shapes, and lateral extents change during propagation through the heliosphere?
- How do the configurations of shocks and magnetic fields near the Sun influence particle acceleration (e.g., by shocks, stochastic acceleration at flare sites) and transport?
WG1-2
Origin and Evolution of the Solar Wind (Bill Abbett, Ilia Roussev)
- How well do we understand the physical connection from the photosphere through the corona to the heliosphere?
- What is the topology of the open magnetic field of the Sun, and how does it evolve?
- What are the sources for heating and acceleration of the solar wind?
WG3: Energetic Particles (Mihir Desai, Joe Giacolone)
Sources of Suprathermal Ions in the Solar Corona and the Interplanetary Medium
This session will combine and compare critical new measurements obtained by solar wind, suprathermal, and energetic particle composition instruments on board ACE, Wind, and SoHO, and discuss the importance of roles played by various physical mechanisms such as acceleration at shocks and compression regions, statistical acceleration in the interplanetary medium, and reconnection during solar flares, in producing key observational features of the suprathermal ion population.
Mechanisms of Particle Acceleration near the Sun
This session focuses on general acceleration mechanisms near the Sun and in the inner heliosphere. The goal of this session is to bring together theorists, modelers, and experimentalists to discuss the observations and current acceleration theories.
Effects of the Sun on the Outer Heliosphere
The main goal of this session is to investigate and characterize the global effects of the Sun as seen in the outer heliosphere. The invited talks and working-group discussion will center on the spatial and temporal evolution of transient and recurrent structures as observed at Ulysses, Voyager, and Pioneer spacecraft, and on current modeling of these events.