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Table 1.

List of radial stretchings implemented in lensmapping.

Id f(|β|) Arguments
1 f0 + f2|β|2/2 f0, f2
2 f0 + β02 f2 |β|2 [2 (β02+|β|2)] f0, f2, β0
3 2f0/cosh(|β|/β0) − f0, with f0, θE
4 a[1−cos(c |β|)] a, c

Notes. The first column id is used to select the source mapping when we instantiate the class sourcemapping (see in text for more details).

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