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TITLE:            GCN/LVC NOTICE
NOTICE_DATE:      Sat 18 May 19 19:25:48 UT
NOTICE_TYPE:      LVC Preliminary
TRIGGER_NUM:      S190518bb
TRIGGER_DATE:     18621 TJD;   138 DOY;   2019/05/18 (yyyy/mm/dd)
TRIGGER_TIME:     69561.922655 SOD {19:19:21.922655} UT
SEQUENCE_NUM:     1
GROUP_TYPE:       1 = CBC
SEARCH_TYPE:      1 = AllSky
PIPELINE_TYPE:    4 = GSTLAL
FAR:              1.004e-08 [Hz]  (one per 1152.6 days)  (one per 3.16 years)
PROB_NS:          1.00 [range is 0.0-1.0]
PROB_REMNANT:     1.00 [range is 0.0-1.0]
PROB_BNS:         0.75 [range is 0.0-1.0]
PROB_NSBH:        0.00 [range is 0.0-1.0]
PROB_BBH:         0.00 [range is 0.0-1.0]
PROB_MassGap:     0.00 [range is 0.0-1.0]
PROB_TERRES:      0.24 [range is 0.0-1.0]
TRIGGER_ID:       0x10
MISC:             0x1898807
SKYMAP_FITS_URL:  https://gracedb.ligo.org/api/superevents/S190518bb/files/bayestar.fits.gz
EVENTPAGE_URL:    https://gracedb.ligo.org/superevents/S190518bb/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.  
 
 
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TITLE:            GCN/LVC_RETRACTION NOTICE
NOTICE_DATE:      Sat 18 May 19 19:57:17 UT
NOTICE_TYPE:      LVC Retraction
TRIGGER_NUM:      S190518bb
TRIGGER_DATE:     18621 TJD;   138 DOY;   2019/05/18 (yyyy/mm/dd)
TRIGGER_TIME:     69561.922655 SOD {19:19:21.922655} UT
SEQUENCE_NUM:     2
TRIGGER_ID:       0x30
MISC:             0x2898B00
COMMENTS:         LVC Retraction of a previous Alert.  
COMMENTS:            
COMMENTS:         NOTE: This is a RETRACTION.  The trigger is no longer considered to be astrophysical in origin.  
COMMENTS:         This event is an OpenAlert.