The Scattering Budget of Fast Radio Bursts Against Dispersion Measure
Year: 2026
Type: article
Abstract: This paper computes the pulse-scattering budget of fast radio bursts from the empirical Galactic relation between scattering time and dispersion measure, evaluates it across the observed dispersion range and at the low-frequency edge of current surveys, and identifies the dispersion at which scattering alone would broaden a burst beyond easy detectability. The headline results are as follows. Predicted scattering time at dispersion measure 100: 0.0134 ms; Predicted scattering time at dispersion measure 300: 3.07 ms; Predicted scattering time at dispersion measure 600: 168 ms; Predicted scattering time at dispersion measure 1000: 4.29e+03 ms; Scattering time at 400 MHz for dispersion measure 600: 9.49e+03 ms; Dispersion at which the predicted scattering reaches 10 ms at 1 GHz: 372 pc cm-3. All values are computed from the stated assumptions and published inputs; the study is simulated and computed, not measured.
Author: Aldred, William Alexander
Language: English
Subfield: Astronomy and Astrophysics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W7225824573
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