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written by Armando Pisani
The Galaxy Rotation with Dark Mater model shows that the actual rotation of spiral galaxies cannot be accounted for by visible matter alone. Newtonian dynamics allows us to compute the amount of additional matter, that we call "dark", needed to compute correctly the observed galaxy rotation curve. Here we use a simple model to simulate the galaxy rotation curve and the distribution of visible matter (namely, stars) within the galaxy. It is possible to vary the parameters of the dark matter distribution in order to improve the interpretation of the rotation of the galaxy.
The Galaxy Rotation with Dark Mater model was created using the Easy Java Simulations (EJS) modeling tool. It is distributed as a ready-to-run (compiled) Java archive. Double click the ejs_astro_GalaxyRotation.jar file to run the program if Java is installed.
Please note that this resource requires at least version 1.5 of Java (JRE).
View the source code document attached to this resource
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Galaxy Rotation with Dark Matter Model:
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 Galaxy Rotation with Dark Matter.relation by Wolfgang Christian
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