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Adam Amara, Thomas Kitching , Anais Rassat, Alexandre Refregier

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

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Adam Amara, Thomas Kitching , Anais Rassat, Alexandre Refregier

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

  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 • Tutorials • Weak lensing • Cosmic Shear • Strong lensing • Galaxy correlations • BAO • ISW • Modified Gravity • 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

  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

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