(Submitted February 10, 1997)
I would like to know if there is any evidence for counter clock wise
rotation of the South Atlantic Anomaly (SAA). Tried a few other sources, some asked what's the
SAA? Never heard of it. Assumed if anyone would know it would be your
This question is a good one for the Imagine the Universe! Ask an Astrophysicist
service. Part of our job is to create observation schedules
for the Rossi X-ray Timing Explorer. To do this, we have to model the
location of the SAA. So I must say that you've come to the right place !
The South Atlantic Anomaly does not rotate. It changes its
size (both in height above the earth and extent in latitude and
longitude) due to a number of factors, with the primary one being
solar activity. But there is no rotation to it.
for the Ask an Astrophysicist team
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