Astronomy 6: Introductory Cosmology
Prof. David Cohen
Fall 2013 (second half of the semester only)
Wed., Fri. 2:00 to 3:15
Update (Dec. 8): We have class meetings on Monday and Wednesday this week. The former is an official make-up of the Friday class from Thanksgiving week and the latter is an unofficial make-up of the Wednesday class from that week. We'll meet at the usual time and place but on Monday and Wednesday this week.
Look below, in the Assignments section, for information about preparation for class this week, for information about our last homework, and (eventually) for information about our final exam. Look to the right for office hours.
Update (Dec. 9): For our last class, on Wednesday, please read the rest of Ch. 24 (secs. 3 and 4), and read this one page article by Jim Holt that addresses the question of how we should think about the "fine tuning" of the Universe and how seriously we should take the idea of multiple universes. Also please listen to the TED talk by Sean Carroll on the early universe, entropy, and the arrow of time if you haven't done so already.
Update (Dec. 8): There is part of a new homework assignment available, on modeling the universe including the horizon distance and on the accelerating expansion. dark matter. It is due Thursday by noon. Note that what is posted as of Sunday afternoon is updated compared to what I emailed out earlier in the weekend but also that I'll be adding at least one more problem to the assignment soon.
For our next class meeting (Monday, December 9), please review sec. 24.2 and especially Figs. 24.6 and 24.7. Also: read this short article about the accelerating universe and dark energy.
Check the departmental colloquium schedule (we should have some talks listed there by the beginning of the semester). You should come to these talks. They are typically Friday at 12:30 in Rm. 199, and include free pizza. In addition, U. Penn cosmologist Mark Trodden will be giving a talk, sponsored by Sigma Xi, on Tuesday, December 3, at 4:30 pm.
There are telescope public viewings the second Tuesday of each month, at the Peter van de Kamp Observatory on the roof of the Science Center. The next one is on December 10, at 8 PM.
Ned Wright's (UCLA) cosmology tutorial
This page is maintained by David Cohen
cohen -at- astro.swarthmore.edu
Last modified: December 9, 2013