written by Jacob Moldenhauer, Keenan Stone, and Larry Engelhardt

Direct and indirect measurements of the Hubble Parameter, H(z), support the accelerated expansion of the universe (cosmic acceleration). The Hubble Parameter represents the expansion rate of the universe at a particular redshift or time in the evolution of the universe, with H(z=0) (the Hubble Constant), being the expansion rate today. The simulation allows users to compare and fit theoretical models of cosmology with recent BAO data sets to confirm the accelerated expansion of the universe. This modeling allows the user to vary cosmological parameters within a particular class of dark energy cosmological models to fit a particular cosmological data set. The user can plot several theoretical curves with the data to compare different models. The values of these parameters, for a particular model, determine the physical description and evolution of the universe.

The EJS Fitting Cosmological Data Hz model was created using Easy Java Simulations (EJS) modeling tool. It is distributed as a ready-to-run (compiled) Java archive. Double clicking the ejs_FittingCosmologicalDataHz.jar file will run the program if Java is installed. You can modify this simulation if you have EJS by right-clicking within the plot and selecting Open Ejs Model from the pop-up menu item.

• Download ejs_model_FittingCosmologicalDataHzDEDGP.jar - 2591kb Java Archive File

Published September 7, 2012
Last Modified August 17, 2017

This file has previous versions.

The source code zip archive contains an EJS-XML representation of the Fitting Cosmological Data Hz Model.   Unzip this archive in your EJS workspace to compile and run this model using EJS.

• Download ejs_src_FittingCosmologicalDataHzDEDGP.zip - 160kb Compressed File

Last Modified August 17, 2017

This file has previous versions.