////////////////////////////////////////////////////////////////////// TITLE: GCN/LVC NOTICE NOTICE_DATE: Tue 23 Sep 25 05:50:51 UT NOTICE_TYPE: LVC Preliminary TRIGGER_NUM: S250923ac TRIGGER_DATE: 20941 TJD; 266 DOY; 2025/09/23 (yyyy/mm/dd) TRIGGER_TIME: 21020.845940 SOD {05:50:20.845940} UT SEQUENCE_NUM: 1 GROUP_TYPE: 1 = CBC SEARCH_TYPE: 1 = AllSky PIPELINE_TYPE: 4 = gstlal FAR: 1.357e-05 [Hz] (one per 0.9 days) (one per 0.00 years) PROB_NS: 0.00 [range is 0.0-1.0] PROB_REMNANT: 0.00 [range is 0.0-1.0] PROB_BNS: 0.00 [range is 0.0-1.0] PROB_NSBH: 0.00 [range is 0.0-1.0] PROB_BBH: 0.09 [range is 0.0-1.0] PROB_MassGap: 0.07 [range is 0.0-1.0] PROB_TERRES: 0.91 [range is 0.0-1.0] TRIGGER_ID: 0x10 MISC: 0x1898403 SKYMAP_FITS_URL: https://gracedb.ligo.org/api/superevents/S250923ac/files/bayestar.multiorder.fits,0 EVENTPAGE_URL: https://gracedb.ligo.org/superevents/S250923ac/view/ COMMENTS: LVC Preliminary Trigger Alert. COMMENTS: This event is an OpenAlert. COMMENTS: LIGO-Hanford Observatory contributed to this candidate event. COMMENTS: LIGO-Livingston Observatory contributed to this candidate event. ////////////////////////////////////////////////////////////////////// TITLE: GCN/LVC NOTICE NOTICE_DATE: Tue 23 Sep 25 05:55:26 UT NOTICE_TYPE: LVC Preliminary TRIGGER_NUM: S250923ac TRIGGER_DATE: 20941 TJD; 266 DOY; 2025/09/23 (yyyy/mm/dd) TRIGGER_TIME: 21020.846679 SOD {05:50:20.846679} UT SEQUENCE_NUM: 2 GROUP_TYPE: 1 = CBC SEARCH_TYPE: 1 = AllSky PIPELINE_TYPE: 4 = gstlal FAR: 9.003e-06 [Hz] (one per 1.3 days) (one per 0.00 years) PROB_NS: 0.00 [range is 0.0-1.0] PROB_REMNANT: 0.00 [range is 0.0-1.0] PROB_BNS: 0.00 [range is 0.0-1.0] PROB_NSBH: 0.00 [range is 0.0-1.0] PROB_BBH: 0.15 [range is 0.0-1.0] PROB_MassGap: 0.07 [range is 0.0-1.0] PROB_TERRES: 0.85 [range is 0.0-1.0] TRIGGER_ID: 0x10 MISC: 0x2898603 SKYMAP_FITS_URL: https://gracedb.ligo.org/api/superevents/S250923ac/files/bayestar.multiorder.fits,1 EVENTPAGE_URL: https://gracedb.ligo.org/superevents/S250923ac/view/ COMMENTS: LVC Preliminary Trigger Alert. COMMENTS: This event is an OpenAlert. COMMENTS: LIGO-Hanford Observatory contributed to this candidate event. COMMENTS: LIGO-Livingston Observatory contributed to this candidate event.