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Gremlin is Teukolsky equation solver for a point particle on a bound, timelike orbit. GremlinEq is a version of Gremlin that specializes the source to circular and equatorial orbits of Kerr black holes. The full Gremlin package will be released publicly via the Black Hole Perturbation Toolkit; certain proprietary libraries that were used in its development must be cleaned up and replaced with Open Source resources. GremlinEq has been so cleaned, and is hereby provided as an initial release.


Documentation for Gremlin can be automatically generated from the source code using Doxygen. A version generated with the latest git revision is available on the documentation page.

Authors and contributors

Scott Hughes, Halston Lim, Niels Warburton