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19 - Interstellar Scintillation and Scattering

from Part IV - Environments and the Interstellar Medium

Published online by Cambridge University Press:  21 July 2022

Andrew Lyne ,
Francis Graham-Smith  and
Benjamin Stappers
Andrew Lyne
Affiliation:
University of Manchester
Francis Graham-Smith
Affiliation:
University of Manchester
Benjamin Stappers
Affiliation:
University of Manchester
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Summary

The ionised interstellar medium is ideally accessible to radio pulsar research, both on large scales through frequency dispersion and on small scales through scattering and random refraction of radio waves. The theory is presented both geometrically and as wave diffraction. Observations reveal structure on a wide range of scales, including the effects of discrete structures. Interstellar scattering also lengthens radio pulses.

Keywords

Thin-screen modelDiffraction theory of scintillationThick (extended) scattering screenFresnel distanceStrong and weak scintillationDynamic scintillation spectraScintillation pattern velocityPulse lengtheningObservations of pulse lengthening
Type
Chapter
Information
Pulsar Astronomy , pp. 322 - 348
Publisher: Cambridge University Press
Print publication year: 2022

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