Merge pull request #242 from vijayvarma392/ssk_rational_fit

add rational fit module

Author: vijayvarma392

README.md

@@ -71,7 +71,6 @@ All of these can be installed through pip or conda.
 * [lalsuite](https://pypi.org/project/lalsuite)
 * [sxs](https://github.com/sxs-collaboration/sxs)
 * [scri](https://github.com/moble/scri)
-* [polyrat](https://pypi.org/project/polyrat/)
 
 # Usage
 See example notebooks:

docs/requirements.txt

@@ -1,7 +1,7 @@
 sphinx-rtd-theme==1.3.0
 numpydoc==1.5.0
 nbsphinx==0.9.1
-sphinx-tabs==3.4.1 
+sphinx-tabs>=3.4.5
 numpy==1.24.3
 scipy==1.10.1
 matplotlib==3.7.1

gw_eccentricity/eccDefinition.py

@@ -360,7 +360,9 @@ def measure_eccentricity(tref_in=None,
                   oscillatory behavior, particularly near the merger,
                   especially for noisy NR data.
 
-            - `rational_fit`: Uses `polyrat.StabilizedSKRationalApproximation`.
+            - `rational_fit`: Uses Rational Approximation Using a
+                Stabilized Sanathanan-Koerner Iteration based on
+                https://arxiv.org/abs/2009.10803.
                 - Can handle both clean and noisy data, e.g., waveform
                     modes from numerical simulations.
                 - Better monotonic behaviour, particularly near the merger.