1. Adam Amara, Thomas Kitching, Anais Rassat, Alexandre Refregier

2. Amara & Refregier (2007) weak lensing tomography Taylor, Kitching, Heavens, Bacon (2007) shear ratio with BAO and SNIa priors Heavens, Kitching, Taylor (2007) 3D cosmic shear with BAO and SNIa priors Kitching, Taylor, Heavens (2008) The effect of systematic effects on 3D lensing dark energy constraints Rassat et al. (2008) Deconstructing BAOs Kitching, Amara, Abdalla, Joachimi, Refregier (2008) Submitted next week. Full characterisation of cosmological systematics Refregier, Amara, Kitching, Rassat (2008) iCosmo source code description

3. Motivation Dark Universe, low redshift, cosmological tools & resources Easy, pain-free interface Open source Community involvement CMBfast, CAMB, CMBeasy iCosmo

4. Source Code Open Source : download at www.icosmo.org Interactive and batch modes Online and in-code documentation Caters for all levels: research and teaching Easy Syntax IDL : large number of libraries, easy plotting Convenient development platform for research Easily extendable Coherent structure of routines and functions Many open source IDL libraries

5. Source Code > fid=set_fiducial(cosmo_in={w0:-0.95}) > cosmo=mk_cosmo(fid) In 2 lines calculated Distances (angular, comoving, luminosity, light travel) Hubble parameter Growth Factor (full derivative) Linear Power Spectrum Non-linear power spectrum

6. Source Code > sv=mk_survey(fid,’sv1’) > cl=mk_cl_tomo(fid,cosmo,sv) > cl_cov=mk_cl_tomo_cov(fid,cl,sv) In 3 more lines calculated Lensing power spectrum Covariance Same for BAO and SNIa

7. Source Code > fid=set_fiducial(cosmo_in={w0:-0.95}) > sv=mk_survey(fid,’sv1’) > fisher=mk_fisher_lens(fid,sv) In 3 lines can calculate Tomography Lensing Fisher Matrix Same for BAO and SNIa Combining Fishers is trivial

8. Interactive Web Interface www.icosmo.org

9. Resources Suite of tutorials and documents Fully integrated with the source code and interactive site Wiki pages Continually evolving and expanding With contributions from experts in each field Currently available Gravitational Lensing (Sarah Bridle, Alan Heavens, Andy Taylor, Benjamin Joachimi, Justin Read, Dan Kubas) Galaxy Correlations (Luca Amendola, Martin Kunz, Francisco Castander) CMB & ISW (Nabila Aghanim, Marian Doupis) Modified Gravity (Jochen Weller, Shaun Thomas, Luca Amendola)

10. Resources www.icosmo.org

11. Version 1.0 Open source code Intuitive Web Interface Calculate : Distances, Hubble, Growth Factor Linear & Non-linear Power Spectrum Lensing Power Spectrum BAO Distance Scales SNIa Magnitude-distance relation Lensing Fisher Matrix BAO Fisher Matrix SNIa Fisher Matrix Tutorials Weak lensing Cosmic Shear Strong lensing Galaxy correlations BAO ISW Modified Gravity

12. Conclusions Continually evolving and expanded … How to get started There are video tutorials continually being added, a website guide coming out soon, and lots of help online. Coming Soon: CMB & ISW w(z) bins (new JDEM FoM) Halo model Q: Can I be involved? A : Community contributions are encouraged. help@icosmo.org www.icosmo.org Refregier, Amara, Kitching, Rassat (2008) arXiv:0810.1285