Astrophysics fall trimester  2007

Universe/publisher link:  register as a student to use the resources

Astronomy Picture of the Day        the latest astrophysics discoveries
what's up in the
sky this week

 Monday, November 12 Tuesday,   November 13 Wednesday, November 14 Thursday, November 15 Friday, November final exam 6 pm check ataglance for room you can bring and use anything in your own handwriting (notes, homework, labs) bring elementary-particle_and forces handout and green book; you may be able to use those also tutorial from 3:30 - 4:30 ; bring questions check my record of your presentations, taped to my office door web stuff lab interstellar matter lab will be graded by 11:30 am; please pick up (from black box outside the hallway) answers to lab questions and grading rubric are posted on my bulletin board news/discoveries of the week

Monday,
October 29
Tuesday,
October 30
Wednesday,
October 31
Thursday,
Nov 1
Friday,
November 2
class
no classes for students

jit due by noon
(always done before class)

read the convection reading that you didnt do last week:

18(5) on convection,
and perhaps a clue why radiation stops and convection starts in the outer layers

18(4): where are the solar neutrinos?

pp. 407- 408: the search for the neutrinos, a personal viewpoint
18(6,7,8)
20(1-2,7-8)
things you should know the answer to before coming to class
put a pan of water on the stove:
why does the pan not convect whereas the water does??

how can we calculate the time it takes a convection cell to travel from the bottom of the convective layer in the sun to the top surface of the sun?

why does convection occur in the water above the pan, and not in the pan?

why does convection occur in the outer parts of the sun and not the inner parts?

what are the three different ways in which we are trying to detect solar neutrinos?

why did it require the SNO machine to answer the question about the solar neutrinos?

homework
(written assignments
to be turned in)

please bring at least 2 of the following calculations to class:
(they should take 5 minutes each, maybe 10)

verify the 1014 neutrinos per square meter (at earth) as claimed on page 386

how many Cl atoms are in the 100,000 gallon tank?
(p. 386, 2nd column, last full paragraph)

what's the reaction that converts Cl37 to Ar37?
balance all 3 quantum numbers
(p. 386, 2nd column, last full paragraph)

web stuff

the first neutrino image of the sun

Super-Kamiokande and its photomultipliers surrounding the water (before it was destroyed in a chain reaction)

Sudbury Neutrino Observatory
detection  physics

## the Mystery of the Missing Neutrinos  -- this experiment won half of the 2002 Nobel Prize in Physics

Weighing in on the Neutrino Mass -- the experiment that won  the other half of the 2002 Nobel Prize in Physics

the active sun in the ultraviolet

close-up of magnetic coronal loops

the magnetic corona

a typical coronal hole

hear the sun quake

see what helioseismology tells us

see the sun quake

the most amazing coronal mass ejection
(plus see 2 comets
swallowed)

Seething Sunspot

sunspot loops in the UV

CMEs on the active sun

lab

news & discoveries

comet Holmes,
brightest comet visible from US in 12 years

pages for October 2007
pages for September 2007
pages for August 2007