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Adam Amara, Thomas Kitching, Anais Rassat, Alexandre Refregier

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fid=set_fiducial(cosmo_in={w0:-0.95}) cosmo=mk_cosmo(fid) In 2 lines calculated ... (fid,'sv1') cl=mk_cl_tomo(fid,cosmo,sv) cl_cov=mk_cl_tomo_cov(fid,cl, ... – PowerPoint PPT presentation

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Title: Adam Amara, Thomas Kitching, Anais Rassat, Alexandre Refregier


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

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
  • gt fidset_fiducial(cosmo_inw0-0.95)
  • gt cosmomk_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
  • gt svmk_survey(fid,sv1)
  • gt clmk_cl_tomo(fid,cosmo,sv)
  • gt cl_covmk_cl_tomo_cov(fid,cl,sv)
  • In 3 more lines calculated
  • Lensing power spectrum
  • Covariance
  • Same for BAO and SNIa

7
Source Code
  • gt fidset_fiducial(cosmo_inw0-0.95)
  • gt svmk_survey(fid,sv1)
  • gt fishermk_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_at_icosmo.org

www.icosmo.org Refregier, Amara, Kitching, Rassat
(2008) arXiv0810.1285
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