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Fitting Cosmological Data Baryon DEDGP
written by Jacob Moldenhauer, Keenan Stone, and Larry Engelhardt
The 1998 discovery of the cosmic acceleration with supernovae was recently awarded the 2011 Nobel Prize in Physics.  Measurements of the baryon acoustic oscillations (BAO), as standard rulers, support this accelerated expansion of the universe (cosmic acceleration). 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 Fitting Cosmological Data Baryon 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_FittingCosmologicalDataBaryon.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.

Please note that this resource requires at least version 1.6 of Java.
1 source code document is available
Subjects Levels Resource Types
- Cosmic Time and Distance
= Type Ia Supernovae
- Cosmology
= Dark Energy
= Dark Matter
= Expansion of the Universe
= Large-Scale Structure
- Stars
= Supernovae
Modern Physics
- Nuclear Physics
- Upper Undergraduate
- Graduate/Professional
- Instructional Material
= Interactive Simulation
Intended Users Formats Ratings
- Learners
- Professional/Practitioners
- Educators
- application/java
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Access Rights:
Free access
This material is released under a GNU General Public License Version 3 license.
Rights Holder:
Jacob Moldenhauer
Record Cloner:
Metadata instance created September 7, 2012 by Wolfgang Christian
Record Updated:
August 17, 2017 by Wolfgang Christian
Last Update
when Cataloged:
September 7, 2012
Other Collections:

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Record Link
AIP Format
J. Moldenhauer, K. Stone, and L. Engelhardt, Computer Program FITTING COSMOLOGICAL DATA BARYON DEDGP, Version 1.0 (2012), WWW Document, (
J. Moldenhauer, K. Stone, and L. Engelhardt, Computer Program FITTING COSMOLOGICAL DATA BARYON DEDGP, Version 1.0 (2012), <>.
APA Format
Moldenhauer, J., Stone, K., & Engelhardt, L. (2012). Fitting Cosmological Data Baryon DEDGP (Version 1.0) [Computer software]. Retrieved July 23, 2024, from
Chicago Format
Moldenhauer, J, K. Stone, and L. Engelhardt. "Fitting Cosmological Data Baryon DEDGP." Version 1.0. (accessed 23 July 2024).
MLA Format
Moldenhauer, Jacob, Keenan Stone, and Larry Engelhardt. Fitting Cosmological Data Baryon DEDGP. Vers. 1.0. Computer software. 2012. Java 1.6. 23 July 2024 <>.
BibTeX Export Format
@misc{ Author = "Jacob Moldenhauer and Keenan Stone and Larry Engelhardt", Title = {Fitting Cosmological Data Baryon DEDGP}, Month = {September}, Year = {2012} }
Refer Export Format

%A Jacob Moldenhauer %A Keenan Stone %A Larry Engelhardt %T Fitting Cosmological Data Baryon DEDGP %D September 7, 2012 %U %O 1.0 %O application/java

EndNote Export Format

%0 Computer Program %A Moldenhauer, Jacob %A Stone, Keenan %A Engelhardt, Larry %D September 7, 2012 %T Fitting Cosmological Data Baryon DEDGP %7 1.0 %8 September 7, 2012 %U

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Fitting Cosmological Data Baryon DEDGP:

Is Based On Easy Java Simulations Modeling and Authoring Tool

The Easy Java Simulations Modeling and Authoring Tool is needed to explore the computational model used in the Fitting Cosmological Data Baryon Model.

relation by Wolfgang Christian

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