Update circulars could include text comparing new skymap to previous one
Some sort of skymap comparison would be good. Here's an example from G298936:
Parameter estimation has been performed using LALInference (Veitch et al., PRD 91, 042003) and a new sky map, LALInference_r1.fits.gz, can be retrieved from the GraceDB event page:
This is the preferred sky map at this time.
The new localization is consistent with but slightly smaller than the BAYESTAR localization using HLV data (GCN 21661, bayestar-HLV.fits.gz). The 50% area has decreased from 277 to 207 deg2 and the 90% area has decreased from 1219 to 952 deg2. The all-sky, marginalized luminosity distance estimate is 1738 +/- 477 Mpc (a posteriori mean +/- standard deviation), largely consistent with the original estimate.