German Astrophysical Virtual Observatory Cluster Finder VO Methods

German Astrophysical Virtual Observatory Cluster. Finder VO Methods for Astronomical Applications Wiss. Beirat AIP, 01. 10. 2004 Cluster. Finder & VO-Methods H. Enke

Overview GAVO A brief introduction Cluster. Finder Cluster detection using Virtual Observatory methods Wiss. Beirat AIP, 01. 10. 2004 Cluster. Finder & VO-Methods H. Enke

International Virtual Observatory Alliance Wiss. Beirat AIP, 01. 10. 2004 Cluster. Finder & 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 Cluster. Finder & VO-Methods H. Enke

Federation of Datasets Towards a multi-wavelength view of universe Matching n n Classification (GAVO/Class. X) SEDs Web services n Based on standards + protocols w HTTP + XML or SOAP + WSDL Wiss. Beirat AIP, 01. 10. 2004 Cluster. Finder & VO-Methods H. Enke

NGSE (Next Generation Search Engine) Download Manager n Retrieves data from multiple distributed databases Matcher n Matches sources based on sky-position (astronomical sources have no unique identifier) Classifier n Uses multi-wavelength data for identification purposes Visualization Tools Wiss. Beirat AIP, 01. 10. 2004 Cluster. Finder & VO-Methods H. Enke

Grid computing Cosmologic simulations running on joint MPE and AIP workstation grid (with MPI) Grid computing for source extraction and identification programs Wiss. Beirat AIP, 01. 10. 2004 Cluster. Finder & VO-Methods H. Enke

GAVO-GRID (Globus) GAVO-Grid Wiss. Beirat AIP, 01. 10. 2004 Cluster. Finder & VO-Methods H. Enke

Theory in the VO Publication of simulations n (e. g. Planck-Experiment) Theory-observational interface n “Virtual telescope” Wiss. Beirat AIP, 01. 10. 2004 Cluster. Finder & VO-Methods H. Enke

GAVO Architecture VO-Sites Robotic Telescopes Grid Enabled Sites GAVO Web. Portal Secure Protocols HTTP, SOAP Web. Services Cone. Search, DB-Query Web-Grid. Services Matching, Classification Astronomical Files DB Archive Normal security realm Wiss. Beirat AIP, 01. 10. 2004 Collaborative User. Space/ Data. Space Glue. Applications, Resource Brokering Computing Tasks Grid security realm Cluster. Finder & VO-Methods H. Enke

Cluster. Finder 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 ke. V. 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 Cluster. Finder & VO-Methods H. Enke

Cluster. Finder VO Methods Cone. Search (HTTP-GET) Grid computing Webservice Archiving of results Wiss. Beirat AIP, 01. 10. 2004 Cluster. Finder & VO-Methods H. Enke

Cluster. Finder Cone. Search (HTTP-GET) Wiss. Beirat AIP, 01. 10. 2004 Cluster. Finder & VO-Methods H. Enke

Cluster. Finder Grid. Queue Grid. Job-Runner CF. exe -1 processor -100 MB memory -10 GB dataspace - resources (maps, psf) Wiss. Beirat AIP, 01. 10. 2004 Cluster. Finder & VO-Methods Webservice Archive access H. Enke

Cluster. Finder Grid computing Dividing areas Distributed jobs Archive access Processing Contour plots Mosaic Wiss. Beirat AIP, 01. 10. 2004 Cluster. Finder & VO-Methods H. Enke

Cluster. Finder Webservice Parameter check and assistance Asynchronous service Runtime information Interface for webservices Wiss. Beirat AIP, 01. 10. 2004 Cluster. Finder & VO-Methods H. Enke

Cluster. Finder Archive Parameter values (metadata) Results Scientific references Wiss. Beirat AIP, 01. 10. 2004 Cluster. Finder & VO-Methods H. Enke