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Workshop "Towards Accurate Lightcones for Cosmology"

18–20 Oct 2016
Excellence Cluster Universe, Garching
Europe/Berlin timezone
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Contribution List

21 out of 21 displayed
  1. 0. Welcome
    Stefan Hilbert (LMU)
    18/10/2016, 09:30
    Welcome, practical information, and outline of workshop
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  2. 14. Lightcones - Introduction
    Stefan Hilbert (LMU)
    18/10/2016, 10:00
    topical introduction to workshop
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  3. 6. An Algorithm for the Generation of Continuous Light Cones in Simulations
    Dr Joachim Stadel (University of Zurich)
    18/10/2016, 11:00
    I will discuss the method employed in our recent 2 trillion particle simulation for generating a light cone where the look-back time and comoving distance from the observer is an exact linear function for every particle. While such an approach may seem to be extremely costly at face value, it turns out to be quite efficient for reasonably large cosmological volumes. I will also discuss...
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  4. 1. Ray-Ramses: a code for ray-tracing on the fly with N-body simulations (1601.02012)
    Mr Sownak Bose (Institute for Computational Cosmology)
    18/10/2016, 11:30
    We present a ray tracing code to compute integrated cosmological observables on the fly in AMR N-body simulations. Unlike conventional ray tracing techniques, this code takes full advantage of the time and spatial resolution attained by the N-body simulation by computing the integrals along the line of sight on a cell-by-cell basis through the AMR simulation grid. Moreover, since it runs on...
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  5. 5. An alternative route for high order lensing
    Dr Claudio Llinares (Durham University)
    18/10/2016, 12:00
    While doing predictions for gravitational lensing using first order equations greatly simplifies the calculations, it has been shown that the approximations involved can not reach the accuracy required by the next generation of galaxy surveys. Second order effects must be included in lensing predictions. Since this is new territory, it is important that we do not focus only on one technique,...
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  6. 3. A Lightcone Catalogue from MXXL
    Mr Alexander Smith (Durham University)
    18/10/2016, 14:00
    With upcoming galaxy surveys, such as DESI and Euclid, it is important to have realistic mock catalogues which can be used, for example, to test methods of measuring statistics from the survey and removing systematic effects. For this purpose, we have created a full sky mock catalogue that is complete to r=20 from the Millennium-XXL (MXXL) simulation. We have generated a MXXL halo lightcone...
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  7. 15. MICE simulations
    Dr Francisco Javier Castander (ICE, IEEC-CSIC)
    18/10/2016, 14:30
    We will summarize the MICE simulations and the way we have built a lightcone in the dark matter distribution and for the lensing observables
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  8. 17. Requirements for Euclid galaxy mocks
    Dr Katarina Markovic (ICG Portsmouth)
    18/10/2016, 15:00
  9. 11. Group discussions
    18/10/2016, 16:00
  10. 21. Born and post-Born full-sky lensing ray-tracing in N-Body simulations
    Dr Carmelita Carbone (INAF - Milan)
    19/10/2016, 09:00
    I discuss Born and post-Born full-sky lensing ray-tracing in N-Body simulations.
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  11. 16. Bayesian Inference with physical models of the cosmic Large Scale Structure
    Dr Jens Jasche (TUM)
    19/10/2016, 09:45
    Next generation cosmological surveys will provide an avalanche of cosmological observations. This increase in scientific data needs to be accompanied with the development of novel information processing techniques to interpret such observations. Analyses of three dimensional inhomogeneous large scale structures require to jointly account for complex dynamical processes, associated to the...
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  12. 22. Halo Model Characterisation for Weak Lensing Predictions
    Dr Carlo Giocoli (Department of Physics and Astronomy - Alma Mater Studiorum UniBO)
    19/10/2016, 11:00
  13. 2. Fast generation of approximate halo catalogues on PLC with PINOCCHIO
    Emiliano Munari (INAF Osservatorio Astronomico Trieste)
    19/10/2016, 11:45
    Pinocchio is a tool to generate in an approximate but fast way catalogs of DM halos. The new version comes with on-the-fly production of halo catalog on the past light cone with continuous time sampling.
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  14. 18. Lightcones, mock catalogues and photometric surveys
    Dr Santiago Avila (Institute of Cosmology and Gravitation)
    19/10/2016, 14:00
  15. 20. SUrvey GenerARtor (SUGAR)
    Mr Rodríguez-Torres Sergio (Instituto de Física Teórica/Departamento de Física Teórica UAM/CSIC)
    19/10/2016, 14:30
  16. 19. Fast, approximate NISP simulations
    Dr Katarina Markovic (ICG Portsmouth)
    19/10/2016, 15:00
  17. 23. group discussions
    19/10/2016, 16:00
  18. 24. The Illustris Simulations
    Dr Dylan Nelson (MPA)
    20/10/2016, 10:00
  19. 13. Group discussions / hack session
    20/10/2016, 11:00
  20. 7. Discussion of future plans
    Stefan Hilbert (LMU)
    20/10/2016, 14:00
  21. 9. Workshop Summary
    Stefan Hilbert (LMU)
    20/10/2016, 15:00