Pulsars and neutron stars/Pulsar rotation measures
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Measuring pulsar rotation measures[edit | edit source]
Pulsar rotation measures (RMs) are measured by fitting the position angle of the linear polarization over a range of observing frequencies as:
where where is the observing frequency.
Measured pulsar RMs vary, in part, because of the Earth's ionosphere. This ionospheric correction can be estimated using the International Reference Ionosphere (IRI) model.