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EVN2015 Considerations

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  1. EVN2015 Considerations • Science with EVN until SKA and its pathfinders => and into the era of SKA • SKA covers VLBI component up to 3000 km • EVN Core has common visibility with South Africa site but not with Australia site • Combined collecting area of enlarged EVN is on order of 10% SKA • Limited frequency range for SKA up to 10 or 25 GHz? • EVN move to higher frequencies • Upgrading and operation of EVN system will be more difficult with SKA coming on line

  2. EVN2015 Considerations (2) More RTs for continuum & line sensitivity and imaging BW increase for continuum sensitivity Data transport requirements Developments of e-VLBI infrastructure Development Space VLBI Data correlation and data storage needs Availability of user-oriented tool such as VO, pipelines, archives

  3. SKA Key Science Projects 1. The Cradle of Life > 20 GHz = terrestrial planets 2. Strong-Field tests of gravity using pulsars & black holes 0.5 – 15 GHz = Galactic Center 3. The origin and evolution of cosmic magnetism 0.3 – 10 GHz = large RMs 4. Galaxy evolution and cosmology 0.3 – 1.4 GHz = galaxies to z = 4 5. Probing the dark ages 0.1 – 20 GHz

  4. AstroNet A: Do we understand the extremes of the universe? • How did the Universe begin? • What is dark matter and dark energy? • Can we observe strong gravity in action? • How do supernovae and gamma-ray bursts work? • How do black hole accretion, jets and outflows operate? • What do we learn about the Universe from energetic radiation and particles?

  5. AstroNet B: How do galaxies form and evolve? • How did the universe emerge from its dark ages? • How did the structure of the cosmic web evolve? • Where are most of the chemical elements throughout cosmic time? • What is the cycling of stars, gas and dust in galaxies? • How did the Milky Way form?

  6. AstroNet C: What is the origin and evolution of stars and planetary systems? • Is the initial mass function of stars universal? • How do stars and stellar systems form? • What do we learn by probing stellar interiors? • What is the life-cycle of the interstellar medium and stars? • How do planetary systems form and evolve? • What are the demographics of planets in the Galaxy? How do we tell which planets harbour life?

  7. AstroNet D: How do we fit in? • How do we study the Sun to explore fundamental astrophysical processes? • What drives Solar variability on all scales? • What is the impact of Solar Variability on life on Earth? • What is the dynamical history of the Solar system? • What can we learn from Solar system exploration about its formation and evolution? • Where should we look for life in the Solar system?

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