Fig. 6.

Relation between tidal deformabilities Λ1 and Λ2 of two compact stars that merged in the GW170817 event (Abbott et al. 2018). For comparison, also shown are the 50% and 90% fidelity regions from the analysis of the GW signal by the LIGO-VIRGO collaboration (Abbott et al. 2018). The gray shading corresponds to the unphysical region Λ2 < Λ1.
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