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Coherent De-dispersion Observations at Jodrell Bank

Published online by Cambridge University Press:  12 April 2016

S. M. Ord
Affiliation:
University of Manchester, Jodrell Bank Observatory, Cheshire, U.K., SK11 9DL
I. H. Stairs
Affiliation:
University of Manchester, Jodrell Bank Observatory, Cheshire, U.K., SK11 9DL
F. Camilo
Affiliation:
University of Manchester, Jodrell Bank Observatory, Cheshire, U.K., SK11 9DL

Abstract

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Coherent de-dispersion removes the dispersive effect of the interstellar medium by convolving the digitally sampled telescope output voltages with an inverse filter function, derived from the tenuous plasma dispersion law. The time resolution obtainable by this method is limited only by the bandwidth that can be sampled sufficiently fast as to avoid aliasing. This allows high time resolution, therefore high precision, timing and polarimetry observations of millisecond pulsars. We present here the first results from the Jodrell Bank coherent de-dispersion system.

Type
Part 3. Studies of Radio Emission
Copyright
Copyright © Astronomical Society of the Pacific 2000