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Solar and space physics datasets within a Virtual Observatory: the AstroGrid experience Silvia Dalla...

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Solar and space physics Solar and space physics datasets within a Virtual datasets within a Virtual Observatory: the Observatory: the AstroGrid experience AstroGrid experience Silvia Dalla * and Nicholas A Walton * School of Physics & Astronomy, University of Manchester, UK Institute of Astronomy, University of Cambridge, UK A PPARC funded project
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Page 1: Solar and space physics datasets within a Virtual Observatory: the AstroGrid experience Silvia Dalla * and Nicholas A Walton  * School of Physics & Astronomy,

Solar and space physics datasets Solar and space physics datasets within a Virtual Observatory: the within a Virtual Observatory: the

AstroGrid experienceAstroGrid experience

Silvia Dalla* and Nicholas A Walton

*School of Physics & Astronomy, University of Manchester, UK

Institute of Astronomy, University of Cambridge, UK

A PPARC funded project

Page 2: Solar and space physics datasets within a Virtual Observatory: the AstroGrid experience Silvia Dalla * and Nicholas A Walton  * School of Physics & Astronomy,

What is AstroGrid?

A PPARC funded project to develop a Virtual Observatory for the UK

One of the main partners in Euro-VO

Founding member of IVOA (=International Virtual Observatory Alliance, www.ivoa.net). Definition of standards. Interoperability.

Both night time astronomy and solar/STP components

Page 3: Solar and space physics datasets within a Virtual Observatory: the AstroGrid experience Silvia Dalla * and Nicholas A Walton  * School of Physics & Astronomy,

AstroGrid components

Portal

Registry – Lists available resources (datasets, applications…). Harvests registries of other VOs.

MySpace – Virtual distributed storage of user files

Common Execution Architecture (CEA) - Models how an application is run in the VO. An application is any process that consumes or produces data.

Job Execution Service (JES)

Page 4: Solar and space physics datasets within a Virtual Observatory: the AstroGrid experience Silvia Dalla * and Nicholas A Walton  * School of Physics & Astronomy,

Workflow

Allows a user to query datasets, call tools and applications, from a single programming environment.

Data remotely located at data centers. Applications running on distributed servers.

Queries to multiple datasets can be brought together in a single workflow. Allows processing of a large number of ‘events’.

Workflows submitted for remote execution. Results collected in a user’s MySpace.

Page 5: Solar and space physics datasets within a Virtual Observatory: the AstroGrid experience Silvia Dalla * and Nicholas A Walton  * School of Physics & Astronomy,

Solar developments

Datasets accessible are SURF TRACE archive at MSSL, SOHO/CDS and SOHO/EIT files at the Virtual Solar Observatory.

Solar application Solar Movie Maker developed.

Solar Event Catalogue part of EGSO accessible from workflow.

Page 6: Solar and space physics datasets within a Virtual Observatory: the AstroGrid experience Silvia Dalla * and Nicholas A Walton  * School of Physics & Astronomy,

Solar science case

Obtain VOTable of solar energetic events via query to EGSO/SEC.

For each event in list, query TRACE or EIT datasets.

Call the movie maker application & generate mpeg movie.

Page 7: Solar and space physics datasets within a Virtual Observatory: the AstroGrid experience Silvia Dalla * and Nicholas A Walton  * School of Physics & Astronomy,

Demo

Demo : Portal

Page 8: Solar and space physics datasets within a Virtual Observatory: the AstroGrid experience Silvia Dalla * and Nicholas A Walton  * School of Physics & Astronomy,

Further info & contact

www.astrogrid.org

[email protected]

Page 9: Solar and space physics datasets within a Virtual Observatory: the AstroGrid experience Silvia Dalla * and Nicholas A Walton  * School of Physics & Astronomy,

AstroGrid portal

Page 10: Solar and space physics datasets within a Virtual Observatory: the AstroGrid experience Silvia Dalla * and Nicholas A Walton  * School of Physics & Astronomy,

Locating resources

The databases, applications, and other resources available are listed in the AG Registry

Page 11: Solar and space physics datasets within a Virtual Observatory: the AstroGrid experience Silvia Dalla * and Nicholas A Walton  * School of Physics & Astronomy,

Building queries

Queries to databases are formulated in ADQL (extension of SQL).

Query builder is provided in the portal

Page 12: Solar and space physics datasets within a Virtual Observatory: the AstroGrid experience Silvia Dalla * and Nicholas A Walton  * School of Physics & Astronomy,

Building a workflow

Queries to databases, calls to applications, operations on data, are combined into workflows.

Workflow submitted for remote execution.

Page 13: Solar and space physics datasets within a Virtual Observatory: the AstroGrid experience Silvia Dalla * and Nicholas A Walton  * School of Physics & Astronomy,

Job Monitor

Monitor job execution

Provide transcript of workflow execution

Page 14: Solar and space physics datasets within a Virtual Observatory: the AstroGrid experience Silvia Dalla * and Nicholas A Walton  * School of Physics & Astronomy,

AG Science Services

In addition to release allowing users to develop own workflow.

Launched via a simple interface, requiring just a few input parameters.

Currently: Solar Movie Maker and Redshift Maker.

Solar Movie Maker: either specify a time range and solar instrument, or an ‘event’ via query to EGSO Solar Event Catalogue.

Monitor job execution and download to local machine from AG portal.

Page 15: Solar and space physics datasets within a Virtual Observatory: the AstroGrid experience Silvia Dalla * and Nicholas A Walton  * School of Physics & Astronomy,

AG Science Services

Page 16: Solar and space physics datasets within a Virtual Observatory: the AstroGrid experience Silvia Dalla * and Nicholas A Walton  * School of Physics & Astronomy,

Future plans

Complete installation of AstroGrid datacentre software at RAL (UKSSDC + solar archive).

Include other main STP datasets. Time series applications. Models.

New STP science cases.

STP science service?

Hands-on AstroGrid Wokshop


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