bilby.gw.conversion.binary_love_lambda_symmetric_to_lambda_1_lambda_2_automatic_marginalisation
- bilby.gw.conversion.binary_love_lambda_symmetric_to_lambda_1_lambda_2_automatic_marginalisation(lambda_symmetric, mass_ratio)[source]
Convert from symmetric tidal terms to lambda_1 and lambda_2 using BinaryLove relations
See Yagi & Yunes, https://arxiv.org/abs/1512.02639 and Chatziioannou, Haster, Zimmerman, https://arxiv.org/abs/1804.03221
This function will use the implementation from the CHZ paper, which marginalises over the uncertainties in the BinaryLove fits. This is also implemented in LALInference through the function LALInferenceBinaryLove.
This function should be used when the BinaryLove marginalisation wasn’t explicitly active in the sampling stage. It will draw a random number in U[0,1] here instead.
- Parameters:
- lambda_symmetric: float
Symmetric tidal parameter.
- mass_ratio: float
Mass ratio (mass_2/mass_1, with mass_2 < mass_1) of the binary
- Returns
- ======
- lambda_1: float
Tidal parameter of more massive neutron star.
- lambda_2: float
Tidal parameter of less massive neutron star.