TITLE: GCN CIRCULAR NUMBER: 21928 SUBJECT: LIGO/Virgo G298048: Limits from further FRB searches of SSS17a DATE: 17/09/26 02:00:59 GMT FROM: Matthew Bailes at Swinburne U Matthew Bailes (Swinburne University of Technology-OzGrav) on behalf of the SUPERB and OzGrav collaborations. We report on further Fast Radio Burst (FRB) search observations of GW counterpart SSS17a/DLTck (eg. Coulter et al., LVC GCN 21529) with the Parkes 64m Radio Telescope in FRB search mode. Three additional hours of data were retrieved and reduced from 0.38-0.5d after the GW event using the same observing setup as that used in GCN circular 28199. The observations commenced at UTC 2017-08-18 06:49:31 (2h) and UTC 2017-08-18 08:50:36 (1h). No FRBs were detected with a flux limit of 1.4 Jy (w/64 us)^{-1/2} where w is the observed width of the FRB in microseconds.