Your name Your title, institution

RI READ ME To modify “Event – Location – Date” footer on all slides, go to Insert > Header & Footer. Change the text of the footer and click “Apply to All”. Event – Location - Date Slide: 2

RI What is NEXPReS? NEXPReS = Novel EXplorations Pushing Robust e-VLBI Services Three years (start 1 July 2010) Funded through the European Community’s Seventh Framework Programme (FP7/ ), Contract n°: RI Budget: 5,745,000 € (EC contribution: 3,500,000 €) Objective: further improve the astronomy technique of electronic Very Long Baseline Interferometry (e-VLBI) with the objective of incorporating it into every experiment conducted by the European VLBI Network (EVN) Means: develop data caching and implement dynamically provisioned network resources to offer the best of both worlds: the data archiving and re- processing afforded by traditional disk-based VLBI and the speed and flexibility of e-VLBI Event – Location - Date Slide: 3

RI Activities #DescriptionLeader WP1Management of the ConsortiumT. Charles Yun, JIVE WP2EVN-NRENRichard Hughes-Jones, DANTE WP3eVSAGFrancisco Colomer, FG WP4CommunicationKristine Yun, JIVE WP5Cloud CorrelationArpad Szomoru, JIVE WP6High Bandwidth on DemandPaul Boven, JIVE WP7Computing in a Shared Mark Kettenis, JIVE Infrastructure WP8Provisioning High-Bandwidth, Ari Mujunen, Aalto High-Capacity Networked Storage on Demand Event – Location - Date Slide: 4

RI NEXPReS Infrastructure Event – Location - Date NEXPReS partner radio telescope NREN partner Correlation facility Storage facility* *also at all telescopes Slide: 5

RI NEXPReS Partners Coordinator: Joint Institute for VLBI in Europe (JIVE), EU (The Netherlands) National Astronomy Institutes The Netherlands Institute for Radio Astronomy (ASTRON), The Netherlands Istituto Nazionale di Astrofisica (INAF), Italy Max Planck Gesellschaft zur Foerderung der Wissenschaften E.V. (MPG), Germany The University of Manchester (UMAN), United Kingdom Chalmers Tekniska Hoegskola AB (OSO), Sweden Ventspils Augstskola (VENT), Latvia Fundación General de la Universidad de Alcalá, together with Instituto Geográfico Nacional (FG-IGN), Spain Aalto University Metsähovi Radio Observatory (AALTO), Finland Commonwealth Scientific and Industrial Research Organisation (CSIRO), Australia NREN Providers and Advanced Computing Facilities NORDUnet A/S (NORDUnet), Denmark SURFnet bv (SURFnet), The Netherlands Poznan Supercomputing and Networking Center (PSNC), Poland Delivery of Advanced Network Technology to Europe Limited (DANTE), EU (United Kingdom) Technische Universität München (TUM), Germany Event – Location - Date Slide: 6

RI What are VLBI and e-VLBI? Very Long Baseline Interferometry (VLBI) Multiple radio telescopes, located hundreds or thousands of miles apart, are used simultaneously to examine the same region of sky at the same time. The simulated telescope, as big as a continent, offers higher resolution than the most powerful optical telescopes in the world. Data is recorded onto hard disks and shipped to the “correlator”, a purpose-built supercomputer, for processing at a later date. The astronomer receives correlated data weeks after the observation. Strength: Data is recorded and can be reprocessed later. Weaknesses: Weeks between observation and data to astronomer, telescope problems detected too late; little flexibility for “target of opportunity” observations (ToO) Electronic VLBI (e-VLBI) Data from telescopes is streamed directly to the correlator. Astronomer receives correlated data hours after the observation. If transient activity is detected (e.g. supernovae, gamma ray bursts), follow-on observations can be scheduled immediately. Strengths: Astronomer receives data in hours; telescope problems detected immediately and corrected; ToO observations possible. Weakness: network problems delay data; data not recorded Event – Location - Date Slide: 7

RI Questions/Comments Contact information [your name] [your title] [your institute] [your ] Additional Information at NEXPReS is an Integrated Infrastructure Initiative (I3), funded under the European Union’s Seventh Framework Programme (FP7/ ) under grant agreement n° RI OR Research leading to these results has received funding from the European Union's Seventh Framework Programme (FP7/2007 ‑ 2013) under grant agreement n° RI NEXPReS. This material reflects only the author's views, and the European Community is not liable for any use that may be made of the information contained therein. Event – Location - Date Slide: 8