[Prex] [Triumf-user] Fwd: JINA-CEE LIGO-Nuclear Livestream - Friday, 1 December 2017

[Horowitz, Charles J.]

Hi KK,
Here is an approximate figure comparing LIGO and PREX results.  This is a little cleaner than the ones in our paper ArXiv:1711.06615.  The x axis of the figure is the quadrupole polarizability of the more massive neutron star while the y-axis is the polarizability of the less massive star.  LIGO data from GW170817 limit the polarizabilities to be below and to the left of the brown dashed 90% line.  The solid lines are different equations of state that predict neutron skins (R_n-R_p) in 208Pb as indicated in fm.  The LIGO data suggest the skin is less than 0.29 fm.  In turn the lower limit from PREX that the skin is > 0.15 fm suggests the appropriate average of the polarizabilities of the two stars must be  \Lambda > about 500.

Cheers,
Chuck

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