1 / 12

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

merrill
Download Presentation

Adam Amara, Thomas Kitching , Anais Rassat, Alexandre Refregier

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  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

More Related