First Announcement
Long Wavelength Astrophysics
Joint Discussion 12 at the IAU General Assembly
Monday, 2006 August 21

BACKGROUND:
The greatest discoveries in astronomy have accompanied technological
innovations that have opened new windows of the electromagnetic
spectrum. One of the last poorly explored regions lies between 100 MHz
and the ionospheric cutoff at 10 MHz. In the past, variations in the
ionosphere have limited ground-based instruments to small (< 5 km)
apertures and hence relatively coarse angular resolution and
sensitivity. Ever-increasing computing power combined with new
calibration and imaging techniques make it possible to overcome this
restriction. A number of new instruments are either under
construction or in the prototyping phase. As a preparation for these
new instruments and as a result of new technologies, many exciting
scientific results have been obtained at long wavelengths (< 1 GHz) in
the past several years and continue to be generated, even with the
very limited capabilities presently available. This Joint Discussion
is intended to highlight new results and to plan for advanced
instruments to open this poorly studies wavelength range.

SCIENTIFIC TOPICS
Session 1: Cosmology and Large-Scale Structure
Epoch of Reionization, High-redshift radio galaxies,
structure formation

Session 2: Acceleration Processes
supernova remnants, radio galaxies, clusters of galaxies,
ultra-high energy particles

Session 3: Solar and Planetary Science
The Sun, solar system planets, extrasolar planets

Session 4: Emerging Long-Wavelength Instruments

INVITED SPEAKERS:

T. Bastian
G. Brunetti
C. Carilli
B. Ciardi
C. de Brueck
T. Ensslin
H. Falcke
D. Gary
C. Lonsdale
B. MacDowell
V. Melnik
J. Peterson
C. Sarazin
G. Taylor

FORMAT:
This Joint Discussion will consist of a series of invited talks,
contributed talks, and posters. We invite contributed talks and
posters on any topic related to long-wavelength astrophysics or
instrumentation.

DEADLINES:
Early Registration: May 15, 2006
Abstract Submission: June 26, 2006
XXVIth GA IAU: August 14 - 25, 2006

VENUE:
The Joint Discussion will take place as part of the IAU General
Assembly in Prague, Czech Republic. Please see the General Assembly
Web site, http://www.astronomy2006.com/ , for full details
about registration and accommodation, and for the on-line forms for
registration and abstract submission.

SOC:
Franklin Briggs
Gloria Dubner
Luigina Feretti
Jacqueline N. Hewitt
Namir E. Kassim (co-Chair)
Joseph Lazio (co-Chair)
A.V. Megn
Alexander A. Konovalenko
Alain Lecacheux
A. Pramesh Rao
Huub J.A. Rottgering
Kurt Weiler

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