wiss. beirat aip, 01.10. 2004 clusterfinder & vo-methods h. enke german astrophysical virtual...
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Wiss. Beirat AIP, 01.10. 2004 ClusterFinder & VO-Methods H. Enke
German Astrophysical Virtual Observatory
ClusterFinder VO Methods for Astronomical
Applications
Wiss. Beirat AIP, 01.10. 2004 ClusterFinder & VO-Methods H. Enke
Overview
GAVO A brief introduction
ClusterFinder Cluster detection using Virtual Observatory methods
Wiss. Beirat AIP, 01.10. 2004 ClusterFinder & VO-Methods H. Enke
International Virtual Observatory Alliance
Wiss. Beirat AIP, 01.10. 2004 ClusterFinder & VO-Methods H. Enke
GAVO’s Pillars
Federation of datasets Matching & Classification
& Visualization (NGSE) Grid computing Theoretical VO and
Theory-Observation Interface
Wiss. Beirat AIP, 01.10. 2004 ClusterFinder & VO-Methods H. Enke
Federation of Datasets
Towards a multi-wavelength view of universe
Matching Classification (GAVO/ClassX) SEDs
Web services Based on standards + protocols
HTTP + XML or SOAP + WSDL
Wiss. Beirat AIP, 01.10. 2004 ClusterFinder & VO-Methods H. Enke
NGSE (Next Generation Search Engine)
Download Manager Retrieves data from multiple distributed databases
Matcher Matches sources based on sky-position (astronomical sources have no unique identifier)
Classifier Uses multi-wavelength data for identification purposes
Visualization Tools
Wiss. Beirat AIP, 01.10. 2004 ClusterFinder & VO-Methods H. Enke
Grid computing
Cosmologic simulations running on joint MPE and AIP workstation grid (with MPI)
Grid computingfor source extraction and
identification programs
Wiss. Beirat AIP, 01.10. 2004 ClusterFinder & VO-Methods H. Enke
GAVO-Grid
GAVO-GRID (Globus)
Wiss. Beirat AIP, 01.10. 2004 ClusterFinder & VO-Methods H. Enke
Theory in the VO
Publication of simulations (e.g. Planck-Experiment)
Theory-observational interface “Virtual telescope”
Wiss. Beirat AIP, 01.10. 2004 ClusterFinder & VO-Methods H. Enke
Grid security realm
Files DB
WebServices Web-GridServices
GAVO Architecture
GAVO WebPortal
ConeSearch,DB-Query
HTTP, SOAP
Matching,Classification
CollaborativeUserSpace/DataSpace
Glue-Applications,
Resource Brokering
Computing Tasks
Secure Protocols
Grid Enabled Sites
Normal security realm
VO-Sites
Astronomical Archive
Robotic Telescopes
Wiss. Beirat AIP, 01.10. 2004 ClusterFinder & VO-Methods H. Enke
ClusterFinder
Simultaneous search
for X-ray clusters of galaxies
X-ray photon maps (RASS)
Optical galaxy maps (SDSS) developped by P. Schuecker et al.
„On a test area of 140 square degrees, 75 X-ray clusters are detected down to an X-ray flux limit of 3 x 10-13 erg s-1 cm-2 in the ROSAT energy band 0.1-2.4 keV. The clusters have redshifts z < 0.5. The survey thus fills the gap between traditional large-area X-ray surveys and serendipitous X-ray cluster searches based on pointed observations, and has the potential to yield about 4,000 X-ray clusters after completion of SDSS.“
Wiss. Beirat AIP, 01.10. 2004 ClusterFinder & VO-Methods H. Enke
ClusterFinder
VO Methods
ConeSearch (HTTP-GET) Grid computing Webservice Archiving of results
Wiss. Beirat AIP, 01.10. 2004 ClusterFinder & VO-Methods H. Enke
ClusterFinder
ConeSearch (HTTP-GET)
Wiss. Beirat AIP, 01.10. 2004 ClusterFinder & VO-Methods H. Enke
Web
serv
ice
GridQueue
GridJob-Runner
Archive access
ClusterFinder
CF.exe-1processor-100 MB memory-10 GB dataspace- resources (maps, psf)
Wiss. Beirat AIP, 01.10. 2004 ClusterFinder & VO-Methods H. Enke
ClusterFinder
Grid computingDividing areasDistributed jobs
Archive access
Processing
Contour plots
Mosaic
Wiss. Beirat AIP, 01.10. 2004 ClusterFinder & VO-Methods H. Enke
ClusterFinder
Webservice
Parameter check and assistance
Asynchronous service
Runtime information
Interface for webservices
Wiss. Beirat AIP, 01.10. 2004 ClusterFinder & VO-Methods H. Enke
ClusterFinder
Archive
Parameter values (metadata)
Results
Scientific references