Set 20 Feb 2008.
Due date Wednesday 27 Feb 2008 at 11 am.
Make sure your units are consistent and make sense.
Show your work, you will not get credit for simply writing down an answer.
- What happened during nucleosynthesis? What elements got made, in what abundance?
Why did the other elements not get made?
- Briefly summerise what we think happened during inflation in the very early universe.
When do we think it occured, for how long did it go on, what happened and what are the potential problems with the model?
- What are the properties of Open, Closed and Flat universes respectively?
What is the primary quantitative difference between the different models?
- Go to the Rotation Curveb website at Case Westerm
Launch the Applet and run the three galaxy models; UGC128, NGC2403 and M33.
For each galaxy, try to find a combination of model parameters that fit the rotation velocity curve.
What selection of parameters, for each galaxy, do you find to be the best fit?
Print out each of the fits you made to the galaxy rotation curve and hand them in.
Comment.
- Read the short story The Planck Dive by Greg Egan.
In your own words, summarise the plot and conclusion.
Briefly discuss your personal impression of the story and what it tells you.
Last updated 02/08
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