Adam Amara, Thomas Kitching, Anais Rassat, Alexandre Refregier

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

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Motivation

• Dark Universe, low redshift, cosmological tools
  resources
• Easy, pain-free interface
• Open source
• Community involvement

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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

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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

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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

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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

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Interactive Web Interface

• www.icosmo.org

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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)

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Resources

• www.icosmo.org

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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

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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