////////////////////////////////////////////////////////////////////// TITLE: GCN/LVC NOTICE NOTICE_DATE: Sat 27 Sep 25 15:25:16 UT NOTICE_TYPE: LVC Preliminary TRIGGER_NUM: S250927ck TRIGGER_DATE: 20945 TJD; 270 DOY; 2025/09/27 (yyyy/mm/dd) TRIGGER_TIME: 55488.955384 SOD {15:24:48.955384} UT SEQUENCE_NUM: 1 GROUP_TYPE: 1 = CBC SEARCH_TYPE: 1 = AllSky PIPELINE_TYPE: 4 = gstlal FAR: 3.139e-08 [Hz] (one per 368.7 days) (one per 1.01 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: 0.98 [range is 0.0-1.0] PROB_MassGap: 0.00 [range is 0.0-1.0] PROB_TERRES: 0.02 [range is 0.0-1.0] TRIGGER_ID: 0x10 MISC: 0x1898C07 SKYMAP_FITS_URL: https://gracedb.ligo.org/api/superevents/S250927ck/files/bayestar.multiorder.fits,0 EVENTPAGE_URL: https://gracedb.ligo.org/superevents/S250927ck/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. COMMENTS: VIRGO Observatory contributed to this candidate event. ////////////////////////////////////////////////////////////////////// TITLE: GCN/LVC NOTICE NOTICE_DATE: Sat 27 Sep 25 15:29:52 UT NOTICE_TYPE: LVC Preliminary TRIGGER_NUM: S250927ck TRIGGER_DATE: 20945 TJD; 270 DOY; 2025/09/27 (yyyy/mm/dd) TRIGGER_TIME: 55488.938599 SOD {15:24:48.938599} UT SEQUENCE_NUM: 2 GROUP_TYPE: 1 = CBC SEARCH_TYPE: 1 = AllSky PIPELINE_TYPE: 4 = gstlal FAR: 3.139e-08 [Hz] (one per 368.7 days) (one per 1.01 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: 0.98 [range is 0.0-1.0] PROB_MassGap: 0.00 [range is 0.0-1.0] PROB_TERRES: 0.02 [range is 0.0-1.0] TRIGGER_ID: 0x10 MISC: 0x2898E07 SKYMAP_FITS_URL: https://gracedb.ligo.org/api/superevents/S250927ck/files/bayestar.multiorder.fits,1 EVENTPAGE_URL: https://gracedb.ligo.org/superevents/S250927ck/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. COMMENTS: VIRGO Observatory contributed to this candidate event. ////////////////////////////////////////////////////////////////////// TITLE: GCN/LVC NOTICE NOTICE_DATE: Sat 27 Sep 25 16:11:21 UT NOTICE_TYPE: LVC Initial Skymap TRIGGER_NUM: S250927ck TRIGGER_DATE: 20945 TJD; 270 DOY; 2025/09/27 (yyyy/mm/dd) TRIGGER_TIME: 55488.938599 SOD {15:24:48.938599} UT SEQUENCE_NUM: 3 GROUP_TYPE: 1 = CBC SEARCH_TYPE: 1 = AllSky PIPELINE_TYPE: 4 = gstlal FAR: 3.139e-08 [Hz] (one per 368.7 days) (one per 1.01 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: 0.98 [range is 0.0-1.0] PROB_MassGap: 0.00 [range is 0.0-1.0] PROB_TERRES: 0.02 [range is 0.0-1.0] TRIGGER_ID: 0x10 MISC: 0x3898E07 SKYMAP_FITS_URL: https://gracedb.ligo.org/api/superevents/S250927ck/files/bayestar.multiorder.fits,1 EVENTPAGE_URL: https://gracedb.ligo.org/superevents/S250927ck/view/ COMMENTS: LVC Super Initial Skymap -- a location probability map. COMMENTS: This event is an OpenAlert. COMMENTS: LIGO-Hanford Observatory contributed to this candidate event. COMMENTS: LIGO-Livingston Observatory contributed to this candidate event. COMMENTS: VIRGO Observatory contributed to this candidate event. ////////////////////////////////////////////////////////////////////// TITLE: GCN/LVC NOTICE NOTICE_DATE: Sun 28 Sep 25 21:05:15 UT NOTICE_TYPE: LVC Update Skymap TRIGGER_NUM: S250927ck TRIGGER_DATE: 20945 TJD; 270 DOY; 2025/09/27 (yyyy/mm/dd) TRIGGER_TIME: 55488.938599 SOD {15:24:48.938599} UT SEQUENCE_NUM: 4 GROUP_TYPE: 1 = CBC SEARCH_TYPE: 1 = AllSky PIPELINE_TYPE: 4 = gstlal FAR: 3.139e-08 [Hz] (one per 368.7 days) (one per 1.01 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: 0.98 [range is 0.0-1.0] PROB_MassGap: 0.00 [range is 0.0-1.0] PROB_TERRES: 0.02 [range is 0.0-1.0] TRIGGER_ID: 0x10 MISC: 0x4898E07 SKYMAP_FITS_URL: https://gracedb.ligo.org/api/superevents/S250927ck/files/Bilby.multiorder.fits,0 EVENTPAGE_URL: https://gracedb.ligo.org/superevents/S250927ck/view/ COMMENTS: LVC Super Updated Skymap -- a location probability map. COMMENTS: This event is an OpenAlert. COMMENTS: LIGO-Hanford Observatory contributed to this candidate event. COMMENTS: LIGO-Livingston Observatory contributed to this candidate event. COMMENTS: VIRGO Observatory contributed to this candidate event.