www.eu-network.org Sources of Gravitational Radiation EU Astrophysics Network Overview Ed Seidel Albert-Einstein- Institute Principal Network Coordinator Progress on 3D BH Collsions (me) 3D Hydro (Luciano) Stellar Instabilities (Nils) LIGO-G020158-00- Z
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Sources of Gravitational Radiation EU Astrophysics Network Overview Ed Seidel Albert-Einstein-Institute Principal Network Coordinator.
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www.eu-network.orgSources of Gravitational Radiation
EU Astrophysics Network Overview
Ed Seidel Albert-Einstein-Institute
Principal Network Coordinator
Progress on 3D BH Collsions (me) 3D Hydro (Luciano) Stellar Instabilities (Nils)
LIGO-G020158-00-Z
Ed SeidelAlbert Einstein Institute
www.eu-network.orgSources of Gravitational Radiation
Enablers
Focus Physics Areas
Outreach /Leverage GridLab
ZIB/GarchingLBL/NCSA/ANL
CactusCommunity
NSF ASC
Computational Tools
Cactus
Grid
Viz
ASC
3D BH Collisions Other (strange stars,Core collapse, etc)
3D NS processes andmergers
World
Objectives of NetworkA Training program to build a community
Theoretical ToolsEinstein Eqs
Pert. theory
Post-NewtonianTheory
People65:10!
Ed SeidelAlbert Einstein Institute
www.eu-network.orgSources of Gravitational Radiation
Our Team7 Focus areas, links created, strengthened by
Network
Valencia
Ports
SOTON
Meudon
Jena
Palma
Trieste
AUTHRome
WashU
Potsdam
Jena
Cactus Dev/Training
CS EffortsWorldwide
PotsdamPorts
SOTON
Valencia
Rome
Trieste
AUTH
BH Data/Evolutions
Potsdam
Nonlinear GR HydroAnd Applications
Valencia
Trieste
Meudon
Potsdam
Characteristic Codes
SOTON
Meudon
Palma
RomeAUTH
JenaSOTON
Ports
Palma
Stellar Pert Theory
Valencia
Jena
AUTH
Palma
Perturbative Time Evolutions
Valencia
JenaJena
Post-Newtonian Schemes
Ports
Palma
Rome
Valencia
Ed SeidelAlbert Einstein Institute
www.eu-network.orgSources of Gravitational Radiation
Grid Application Toolkit for application developers (APIs/Tools)
Develop new grid scenarios for 2 main apps: Numerical relativity Grav wave data
analysis
Ed SeidelAlbert Einstein Institute
www.eu-network.orgSources of Gravitational Radiation
Discovery Channel wantsPre-ISCO 3! This June…
Ed SeidelAlbert Einstein Institute
www.eu-network.orgSources of Gravitational Radiation
Building a Community (through) Code:
Advantages Sharing of Expertise: No single group or community
can do these problems Sharing of Code among projects
Infrastructure BH routines apply directly to NS work, etc… But free to keep routines in group as long as desired
Better Code Open source encourages people to be more careful in coding! Encourages documentation Encourages deeper thinking about how it interfaces to another
code More trusted code, results
When code becomes open, and people can run it for themselves, they will begin to believe the results
Improvements propagate quickly though community Not well accepted yet, but we are starting a good
trend…
Ed SeidelAlbert Einstein Institute
www.eu-network.orgSources of Gravitational Radiation
Cactus User CommunityUsing and Developing Physics
Thorns
Goddard
Wash UAEI
TACTuebingen
Soton
SISSA
Thessaloniki
Meeting in May:
Theoretical Foundations of Einstein’s Equations for Numerical Relativity
(Using Cactus to investigate and compare different implementations)
Climate Modeling(NASA,AMS)
Chemical Engineering (U.Kansas)
Bio-Informatics(Canada)
Geophysics(Stanford)
Astrophysics(Zeus)
Plasma(Princeton)
EU AstrophysicsNetwork
NASA
Early Universe(LBL)
Numerical Relativity/Astrophysics Other Applications
Portsmouth
RIKEN
Monash Pitt
UT
PSU
UNAM
Etc…Arizona
Ed SeidelAlbert Einstein Institute
www.eu-network.orgSources of Gravitational Radiation
Previous 3D BH Resultsnew formulations, no shift, no
excision
Grazing Collision 1999 Big Advance: 3D, unequal mass,
spin, J Physics! But Code crash by 40M
Ed SeidelAlbert Einstein Institute
www.eu-network.orgSources of Gravitational Radiation
Horizon Mass for Pre-ISCO 4
Low resolution (192x192x96), but mass conserved to ~ 10% until ~100M Now exploring parameters to find orbital configurations