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Joint NSF/NASA Task Force
Beverly Berger (bberger_at_nsf.gov), Program Director, NSF , and Michael
Salamon (msalamon_at_hq.nasa.gov), Program Scientist, NASA have formed a
joint Task Force to investigate computational issues in the area of
gravitational wave physics and astrophysics. The members of this task
saul_at_astro.cornell.edu - Saul Teukolsky, Chair
patrick_at_gravity.phys.uwm.edu - Patrick Brady
jcentrel_at_milkyway.gsfc.nasa.gov - Joan Centrella
pablo_at_astro.psu.edu - Pablo Laguna
lazz_at_ligo.caltech.edu - Albert Lazzarini
rasio_at_northwestern.edu - Fred Rasio
kip_at_tapir.caltech.edu - Kip Thorne
barish_b_at_ligo.caltech.edu - Barry Barrish, ex officio
prince_at_srl.caltech.edu - Tom Prince, ex officio
E-mail the whole graoup at GW_comp_at_olegacy.gsfc.nasa.gov
(Above "@" symobols have been replaced with "_at_" as an anti-spam
The charge to this group is as follows:
Charge to the Gravitational Wave Computation Task Group
The Physics Division of the NSF and the Astronomy & Physics
Division of NASA's Office of Space Science are interested in determining
the resources (both human and computational) needed to resolve those
theoretical* issues critical to LIGO and LISA.
LIGO is about to go on line, and LISA, through the LISA International
Science Team (LIST), is currently determining its baseline science
requirements. Both programs require reliable templates of gravitational
waveforms, analysis techniques to extract individual source signals from a
large background, and theoretical estimates of GW event rates.
By early April, we would like to receive a preliminary report that answers
the following questions:
What are the most urgent needs for LIGO and LISA in the area of
theory involving large-scale computing? In what time frame?
How does the current state-of-the-art in these theoretical areas
compare to the needs?
What are the major science products that the LIGO/LISA GW community
What changes in the demographics of the numerical relativity, data
analysis, and source astrophysics groups will be needed to meet LIGO and
LISA needs over the next 5-10 years?
What, if any, additional resources will be required to support this
What additional computational infrastructure will be needed? How
should this infrastructure be configured (Beowulf clusters, single
mainframes, GRID protocols, etc)?
Not all PhD students will remain in academia. What is the general
value of training in this area? How does the production of significant
numbers of PhDs with computational expertise benefit the nation?
Other issues the Task Group believes to be important to this report.
To provide a more detailed report on the above issues.
* "Theoretical" here should be interpreted broadly to include, e.g.,
algorithms for signal extraction.
The task force will be preparing a preliminary report for delivery to
Berger and Salamon by April 1, 2002, and desires to have community input.
Please send email by March 29, 2002 to any of the task force members or
to the entire task force at GW_comp_at_olegacy.gsfc.nasa.gov.
Kip Thorne has provided the following overview of the charge, with some
suggested categories for response:
What are most urgent needs, involving large-scale computing, for LIGO
and LISA? [e.g. BH/BH merger waveforms, simulations
of stellar dynamics around supermassive BHs, Š]
How does current state-of-art compare with needs?
What changes of demographics needed over 5-10 years?
[sizes & structures of research groups, grad
student training; Š]
What additional resources needed? [funding
What additional computational infrastructure needed & how configured?
[Beowulf, mainframe, GRID, Š]
Extent and benefit of grad students, trained in this field, leaving
academia? [Examples and numbers from past
Once this initial report is completed, the task force will continue to
seek community input for a more detailed report at a later date.