Abstract
The response by a gaseous disc to perturbations is investigated. Spectral analysis of the resulting pattern indicates that information about the nature of the perturber is maintained only if the perturbation is strong.
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Sørensen, SA. The shape of spiral arms. Astrophys Space Sci 118, 395–399 (1986). https://doi.org/10.1007/BF00651155
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DOI: https://doi.org/10.1007/BF00651155