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Working Group 4

Working Group 4. Astrometric Matching Prototype (D4.2). 50 RASS-BSC sources Correlation with five archives (2MASS, FIRST, GSC, NVSS, USNOB) User-defined functionality Coordination transformation Cone-search Uncertainty handling Chi-squared-based filtering Merge join.

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Working Group 4

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  1. Working Group 4

  2. Astrometric Matching Prototype (D4.2) 50 RASS-BSC sources Correlation with five archives (2MASS, FIRST, GSC, NVSS, USNOB) User-defined functionality Coordination transformation Cone-search Uncertainty handling Chi-squared-based filtering Merge join

  3. GT4 Migration – Status Report Internship: Pushkar Prasad Three components Content publishing Optimization service Core Communication interfaces OGSI to WSRF

  4. Clustered Query Processing(Cooperation with Alex Szalay, JHU) Database server cluster Specific spatial clustering in zones Optimized for Cone searches Crossmatches Interrelation between Zone height clustering Search- and matching radii Image by J. Gray et al.

  5. Stream-based Processing of VOEvents VOEvent Description of observational events Automatic follow-up observations XML-based Standardized by IVOA

  6. VOEvent - Subscriptions Current means Subscription of mailing lists RSS feeds Manual filtering Data Stream Management System More flexibility in subscriptions Automatic filtering

  7. Deliverable D4.3 Query processing on persistent data Existing technologies Integration Established services Data sources

  8. SkyNode Web service interface Astronomical data Catalogs Catalog Metadata Publication at VORegistry Common interface for Client applications OpenSkyQuery ADQL

  9. OGSA-DAI Open Grid Services Architecture (OGSA) Data Access and Integration (DAI) Incorporation of data resources in Grid frameworks Relational Databases XML Databases Data Files AstroGrid (UK), D-Grid GGF DAIS Working Group

  10. Streaming of Persistent Data Correlation of Streaming and Persistent Data Sensor/telescope previous observations/simulations What results do we expect? As in persistent processing? Changes in semantics?

  11. Working Group 4 Thank You for Your Attention! Further Questions?

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