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Update Gaussian random shear field generation #641

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rmandelb opened this issue Feb 9, 2015 · 0 comments
Open

Update Gaussian random shear field generation #641

rmandelb opened this issue Feb 9, 2015 · 0 comments
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cleanup Non-functional changes to make the code better desc Of possible interest to LSST DESC members looking for a project feature request Request for a new feature in GalSim lensing Related to lensing inputs, such as the PowerSpecrum and NFWHalo classes starter projects Possibly a good choice for someone looking to get started on GalSim development

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@rmandelb
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rmandelb commented Feb 9, 2015

@gbernstein pointed out that this paper:
http://arxiv.org/abs/1406.6072
has an algorithm for making Gaussian random fields that isn't subject to some of the issues that show up with our current periodic box-dependent algorithm, such as failure to reproduce shear correlations on scales comparable to ~1/2 the size of the simulated area. We should consider implementing this in GalSim.

Thanks for pointing this out, Gary!
@rmjarvis rmjarvis added cleanup Non-functional changes to make the code better feature request Request for a new feature in GalSim labels Jul 28, 2015
@rmjarvis rmjarvis added the starter projects Possibly a good choice for someone looking to get started on GalSim development label Apr 11, 2016
@rmjarvis rmjarvis added the lensing Related to lensing inputs, such as the PowerSpecrum and NFWHalo classes label Nov 21, 2016
@rmjarvis rmjarvis added the desc Of possible interest to LSST DESC members looking for a project label May 3, 2019
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cleanup Non-functional changes to make the code better desc Of possible interest to LSST DESC members looking for a project feature request Request for a new feature in GalSim lensing Related to lensing inputs, such as the PowerSpecrum and NFWHalo classes starter projects Possibly a good choice for someone looking to get started on GalSim development
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