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@astroant a.chrysostomou@skatelescope.org www.skatelescope.org
Antonio Chrysostomou
Head of Science Operations Planning
The Square Kilometre Array An example of international cooperation - - PowerPoint PPT Presentation
The Square Kilometre Array An example of international cooperation - - PowerPoint PPT Presentation
The Square Kilometre Array An example of international cooperation Antonio Chrysostomou Head of Science Operations Planning www.skatelescope.org a.chrysostomou@skatelescope.org @astroant SKA Key Science Drivers: The history of the
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SKA Science Case
- 135 Chapters
- more than 1200 authors
- 31 countries
- 9-kg of science
Science Driven Design
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To achieve these science goals we must overcome the challenges that emerge
- perational
technical scientific exploitation societal impact governance
These challenges can only be faced by a dedicated and international collaboration
Challenges
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Challenge of distributed
- perations
3 Continents 2 Telescopes 1 Observatory
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Challenge of distributed
- perations
Telescope Operator controls and
- perates the telescope from
600–800 km away at Science Operations Centre Signal processing at the telescope sites Data transferred to SOC for Science Processing
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Cape Town Johannesburg
Karoo Radio Astronomy Reserve
197 dishes = 133 (15-m SKA1 dishes) + 64 (13.5-m MeerKAT dishes) 150-km baselines 3 spiral arms frequency range = 0.35 – 15 GHz
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Shire of Murchison
- 50,000 km2 (~ NY State)
- no towns
- 29 sheep &
cattle stations
- population 110
Murchison Radio-Astronomy Observatory
131,072 antenna = 512 stations × 256 antenna 60-km baselines 3 spiral arms frequency range = 50 – 350 MHz
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The SKA’s global footprint
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Technical challenges with an international solution
Sweden: Band 1 RSA/Canada: Band 2 UK: Band 5 UK/AUS: Prototype NIP NL/AUS: LOW CBF
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Technical challenges with an international solution
Chinese (CETC54)/German (MTM) Dish Design
South Africa: DSH test foundation China : Subreflector Italy: Feed indexer
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Technical challenges with a green solution
SKA-LOW prototype antenna station deployed Solar power station: 2.6 MW-hr Lithium-ion battery
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Technical and scientific challenge
SKA1-LOW SKA1-MID
300 PB/ yr ~ 130 PFlops ~ 2 Pb/s ~ 5 Tb/s ~ 7 Tb/s ~ 9 Tb/s
SKA Regional Centres
~ 130 PFlops 300 PB/ yr
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Technical and scientific challenge
SKA1-LOW SKA1-MID
300 PB/ yr ~ 130 PFlops ~ 2 Pb/s ~ 5 Tb/s ~ 7 Tb/s ~ 9 Tb/s
SKA Regional Centres
~ 130 PFlops 300 PB/ yr
SKA1-LOW SKA1-MID
~ 2 Pb/s ~ 5 ~ 7 Tb/s ~ 9 Tb/s
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Technical and scientific challenge
SKA1-LOW SKA1-MID
300 PB/ yr ~ 130 PFlops ~ 2 Pb/s ~ 5 Tb/s ~ 7 Tb/s ~ 9 Tb/s
SKA Regional Centres
~ 130 PFlops 300 PB/ yr
300 PB/ yr ~ 130 PFlops ~ 5 Tb/s
SKA Regional Centres
~ 130 PFlops 300 PB/ yr Memory bandwidth ~ 200 PB/s
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There are three main factors that lead to a model of a global collaborative alliance of SKA Regional Centres (SRCs) (1) The science data products that emerge from the SKA observatory are not in the final state required for science analysis and publication (2) The data volumes are so large that direct delivery to end users is unfeasible (3) The community of scientists working on SKA science data products will be geographically distributed
A collaborative model for SKA Regional Centres
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SKA Distributed Science Operations
Observatory Data Products flow from the Science Data Processors in Perth and Cape Town to SKA Regional Centres around the globe.
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Establishing the SKA Intergovernmental Organisation
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An initial membership of 10 countries to start construction
- f SKA Phase 1
Developing and growing membership towards SKA Phase 2
The SKA IGO will:
- recognise that socio-economic impact is core to its aims
- recognise that all partners require return in various forms
- partnership with hosting nations – not “landlord-tenant” relationship
- promote positive environment: local and global outreach, scientific
creativity, positive IP regulations
Establishing the SKA Intergovernmental Organisation
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Societal impact
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