Astronomy 48 - Weather in Interplanetary Space
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Poster Ideas For Final Poster

 For details on the poster project, please see the following documents.

Space weather

Use the spaceweather.com web site to monitor the space weather between now and
the end of the course. Count the number and types of flares, CMES and
geomagnetic storms. What patterns do you see?

Earth's Magnetic Field

Try and build your own magnetometer. http://www.payton.cps.k12.il.us/magnet/design/design_shop.htm
Does the design work? If you record its observations on a daily basis, do you
see the signature of any solar events?

 

Planetary Magnetic Fields

Use the internet to learn about the extra solar planets that have been discovered to date. Based on what you know about the factors that determine the strength of planetary magnetic fields in our own solar system, pick ~5 extra solar planets and predict whether each of these bodies have dynamo magnetic fields. If so, make a rough prediction of how strong the dynamo is, relative to an object in our own solar system.

Optional: Think about the strength of the stellar wind for each system, and state whether you think atmospheric erosion is an important process for each object.

Classify at least 20 solar system objects by their plasma interaction according to the type of plasma they interact with, and the nature of the obstacle to the plasma. Be as quantitative as possible. If you could send 3 spacecraft missions anywhere in the solar system to study the magnetic fields and plasma interactions of solar system objects, where would you send them and why? What criteria (science-based and practical) would you use to form your decision?

Compare magnetic field strengths at Earth, Mars, Mercury, Moon at the surface, at 100 km, at 400 km altitudes. Calculate standoff distance of solar wind for each body. Will have to give dipole moment, planetary radius/dipole depth, solar wind rho vee squared, and some equations. Will do so if this seems like an appropriate project. Could also add Jupiter, etc.

Mysterious Auroras

Try to construct the auroral oval in the northern hemisphere and confirm its
location with photographs taken from different places of the world.

The auroral oval is located between 60 and 70 degrees geomagnetic latitude. You
would have to find the location of the magnetic pole and then determine where 60
and 70 degrees geomagnetic latitude would be located. You could use a globe for
a very quick test, or there are web sites where you can calculate this. Then
browse the internet and try to find pictures of the aurora, where the location
is given. Put these locations on your map and find out, if they are within the
auroral oval, or not. Some may not be within your oval, why?

 

Size and Scale of the Universe

Do lab experiments using the ideas of parallax and the inverse square law of light to demonstrate the techniques astronomers use to measure distances in the Universe. Read the following Acrobat Reader (pdf) files for directions on two experiments.

pdfParallax Experiment - (2.2MB, .pdf)

pdfInverse Square Law of Light Experiment - (560kB, .pdf)

 

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