We are often asked for projects that can be done with Radio JOVE for science fairs, senior theses, and the like. In his book Listening to Jupiter, Radio JOVE team member, Richard Flagg has compiled some ideas for such projects and experiments. With his permission, we reprint them here.
Flagg states, "The Radio Jove project offers an opportunity to conduct scientific observations of Jupiter and compare results with other observing teams. Using the Jove equipment, you can also make measurements of the galactic background radiation and observe radio noise bursts from the Sun..."
"...This list of experiments and projects is far from complete. However, it should provide a starting point for observers who want to continue with their radio astronomy exploration of the solar system. There are many interesting experiments left to do."
Basic Projects
- Study Jove educational materials and learn about
the radio emissions, their discovery, and characteristics,
as well as information about the
source regions and the controlling effects of Io.
- Learn about electronic components and how
they function together in a radio. Build and
test the Jove radio kit.
- Fabricate and erect the antenna.
- Learn to use the radio noise storm prediction
tables and plan an observing campaign perhaps a field trip, or observations from your
school grounds.
- Set up the receiver, antenna, recorder, and
computer and operate the completed monitoring
station to acquire scientific data.
- Observe Jupiter on several nights and verify
that emissions are most likely to be received
for certain values of CML and Io position.
Make tape recordings and Radio-SkyPipe displays
of the radio noise storms. Keep an accurate
log of activities.
- E-mail data files from Radio-SkyPipe to NASA
so they can be displayed on the Radio Jove
Web site for comparison with results obtained
by other observers.
- Operate the Jove receiver over a 24-hour period
to determine how listening conditions change from daytime to night. Correlate the noise levels and number of radio stations heard
with the time of day and position of the Sun.
- Monitor noise bursts from the Sun as it drifts
through the Jove antenna beam. Correlate reception of bursts with data posted on
the Web by professional observing programs.
Use a small optical telescope or images from
the Web to determine if there are any sunspots
present that may be associated with the
radio noise bursts. (Never look directly at the
Sun through any telescope unless it has a
high-quality solar filter in front of the objective
lens. Probably the safest method is to
project the image onto a white paper.)
- Use the Internet to participate in observations
of Jupiter by radio observatories at the University
of Florida and in Hawaii.
- Make measurements of the galactic background
emission. Observe how these emissions
vary as the Jove antenna beam sweeps
through different parts of the galaxy. A complete
tracing could be made in 24 hours if it
were not for station interference and noise received
during the daylight hours. This means
that during any 24-hour period you can observe
the galactic background best at night
for about eight hours. During that time, your
antenna will sweep about a third of the way
around the celestial sphere due to the earth's
rotation. Four months later, the earth will have
moved a third of the way around the Sun so
the antenna will be viewing a different part
of the galaxy during nighttime hours. Repeating
this measurement at four-month intervals
will put each part of the galaxy into your antenna
beam during nighttime hours when listening
conditions are good. Determine if there
is a peak in the background emission and
when it occurs, and compare this with when
the center of our galaxy is overhead.
Intermediate Projects
- Coordinate observations with other teams.
Compare the structure of radio noise bursts
received simultaneously at several locations.
Determine if the burst structure is similar or
different. If the burst structure is different,
attempt to understand why. (As a follow-on
project, see experiment 4 under advanced
projects.)
- Record radio noise storms over several
months. Devise a method to measure the duration
and structure of individual L-bursts.
Determine if the character of Jovian bursts
changes as Jupiter gets close to the Sun in the
sky. Is the structure of an L-burst a feature of
the source or does it change as signals pass
through the solar corona? Is L-burst structure
dependent on how much of the solar corona
lies between Earth and Jupiter?
Advanced Projects
- With the addition of a calibrated noise source..., it is possible to make measurements
of the absolute strength of radio noise
bursts. From such quantitative measurements
(and a few assumptions), the amount of power
emitted from Jupiter can be calculated.
- Use a pair of Jove receivers to measure the
difference in arrival time of S-bursts at two
frequencies approximately 300 kHz apart. To
perform this experiment, it is necessary to
measure differences in burst arrival times on
the order of 1/100 of a second. Such a measurement
would indicate that S-bursts drift in
frequency and would allow a determination
of the drift rates. A two-channel oscilloscope
could be estimated from the oscilloscope
traces. The drift rate of S-bursts is most likely
a measure of how fast electron bunches are
traveling along the Jovian magnetic field lines.
- Study the polarization of the received signals
using a special antenna called a polarimeter
and a pair of Jove receivers. A polarimeter
not much larger than the basic Jove antenna
can be wired to produce left and right hand
circular outputs... Determine
the dominant polarization of Jovian noise
bursts. Information about the polarization of
the radio noise bursts is relevant to understanding
the role of Jupiter's magnetic field
in their generation.
- Several observers at sites a few hundred miles
apart could synchronize their clocks and make
precise measurements of the arrival time of
individual noise bursts at their observatories.
Determine if differences in bursts received
simultaneously at several sites is due to ionospheric
effects or beams of radio energy from
Jupiter sweeping rapidly across the earth.