iCosmo: an Interactive Cosmology Package

Abstract

Aims: The interactive software package iCosmo, designed to perform cosmological calculations is described. Methods: iCosmo is a software package to perform interactive cosmological calculations for the low redshift universe. Computing distance measures, the matter power spectrum, and the growth factor is supported for any values of the cosmological parameters. It also computes derived observed quantities for several cosmological probes such as cosmic shear, baryon acoustic oscillations and type Ia supernovae. The associated errors for these observables can be derived for customised surveys, or for pre-set values corresponding to current or planned instruments. The code also allows for the calculation of cosmological forecasts with Fisher matrices which can be manipulated to combine different surveys and cosmological probes. The code is written in the IDL language and thus benefits from the convenient interactive features and scientific library available in this language. iCosmo can also be used as an engine to perform cosmological calculations in batch mode, and forms a convenient adaptive platform for the development of further cosmological modules. With its extensive documentation, it may also serve as a useful resource for teaching and for newcomers in the field of cosmology. Results: The iCosmo package is described with various examples and command sequences. The code is freely available with documentation at http://www.icosmo.org, along with an interactive web interface and is part of the Initiative for Cosmology, a common archive for cosmological resources.

6 pages including 2 tables and 4 figures. Accepted and published in Astronomy and Astrophysics. Public code and further resources available at http://www.icosmo.org

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Cited by in corpus (46)

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• Evidence for the accelerated expansion of the Universe from weak lensing tomography with COSMOS
• CFHTLenS: Combined probe cosmological model comparison using 2D weak gravitational lensing
• CosmoSIS: modular cosmological parameter estimation
• Origins of weak lensing systematics, and requirements on future instrumentation (or knowledge of instrumentation)
• Constraining primordial non-Gaussianity with future galaxy surveys
• The impact of intrinsic alignment on current and future cosmic shear surveys
• Accounting for baryonic effects in cosmic shear tomography: Determining a minimal set of nuisance parameters using PCA
• Cross-Correlation of spectroscopic and photometric galaxy surveys: cosmology from lensing and redshift distortions
• Measuring the Integrated Sachs-Wolfe Effect
• SN and BAO constraints on (new) polynomial dark energy parametrizations: current results and forecasts
• 3D Photometric Cosmic Shear
• Combining Probes of Large-Scale Structure with CosmoLike
• The Effect of Weak Lensing on Distance Estimates from Supernovae
• Planck CMB Anomalies: Astrophysical and Cosmological Secondary Effects and the Curse of Masking
• 3DEX: a code for fast spherical Fourier-Bessel decomposition of 3D surveys
• SUNGLASS: A new weak lensing simulation pipeline
• 3D Spherical Analysis of Baryon Acoustic Oscillations
• BAO cosmography
• Removal of two large scale Cosmic Microwave Background anomalies after subtraction of the Integrated Sachs Wolfe effect
• 3D galaxy clustering with future wide-field surveys: Advantages of a spherical Fourier-Bessel analysis
• A critical analysis of high-redshift, massive galaxy clusters: I
• Weak lensing tomography with orthogonal polynomials
• Tension between SN and BAO: current status and future forecasts
• Fisher Matrix Decomposition for Dark Energy Prediction
• The Complementarity of Redshift-space Distortions and the Integrated Sachs-Wolfe Effect: A 3D Spherical Analysis
• Generalised Fisher Matrices
• On Preferred Axes in WMAP Cosmic Microwave Background Data after Subtraction of the Integrated Sachs-Wolfe Effect
• Effect of model-dependent covariance matrix for studying Baryon Acoustic Oscillations
• Path Integral Marginalization for Cosmology: Scale Dependent Galaxy Bias & Intrinsic Alignments
• Redshift-space correlation functions in large galaxy cluster surveys
• Detecting Baryon Acoustic Oscillations
• A group-galaxy cross-correlation function analysis in zCOSMOS
• Figures of Merit for Testing Standard Models: Application to Dark Energy Experiments in Cosmology
• Designing Future Dark Energy Space Missions: II. Photometric Redshift of Space Weak Lensing Optimized Survey
• A weak lensing view on primordial non-Gaussianities
• Modeling of weak lensing statistics. II. Configuration-space statistics
• Cosmic shear calibration with forward modeling
• Symbolic Implementation of Extensions of the $\text{PyCosmo}$ Boltzmann Solver
• Probe combination in large galaxy surveys : Application of Fisher information and Shannon entropy to weak lensing
• Modern Cosmology: Interactive Computer Simulations that use Recent Observational Surveys
• How Future Space-Based Weak Lensing Surveys Might Obtain Photometric Redshifts Independently
• Partition function approach to non-Gaussian likelihoods: Formalism and expansions for weakly non-Gaussian cosmological inference
• Constraining Recent Oscillations in Quintessence Models with Euclid
• Exploring the constraints on cosmological models with CosmoEJS