The Amount of Visible Matter in a Typical Cluster of Galaxies

question 188

Multiple Choice

The amount of visible matter in a typical cluster of galaxies is

• A) just sufficient to hold the inner regions of the cluster together, but the fringe galaxies are drifting away from this center.
• B) not sufficient to hold the cluster together by a factor of 2, such that the cluster is slowly spreading out.
• C) insufficient to hold the cluster together, by about a factor of 10.
• D) far more than enough to hold the cluster together gravitationally and is slowly concentrating the cluster into a very tight supercluster.

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Definitions:

Simulation Trial

An experiment or test in which the outcomes are generated through simulated processes, often used to model and analyze complex systems or phenomena.

Tornado Charts

A type of sensitivity analysis graph that displays the impact of varying inputs on an output variable, often used in decision-making.

Crystal Ball

Software used for predictive modeling, forecasting, simulation, and optimization.

Sensitivity Charts

Visual tools that display how changes in input variables affect the output of a model, commonly used in decision analysis.