2019-09-01T23:36:50 LIGO Scientific Collaboration and Virgo Collaboration The Notice Type number is assigned/used within GCN, eg type=150 is an LVC_PRELIMINARY notice Indicates whether this event should be distributed to LSC/Virgo members only A number that increments by 1 each time a new revision is issued for this event Identifier in GraceDB VOEvent alert type Indicates that this event is a hardware injection if 1, no if 0 Indicates that this event is an open alert if 1, no if 0 Web page for evolving status of this GW candidate List of instruments used in analysis to identify this event False alarm rate for GW candidates with this strength or greater Data analysis working group Low-latency data analysis pipeline Specific low-latency search Sky Map FITS Probability that the source is a binary neutron star merger (both objects lighter than 3 solar masses) Probability that the source is a neutron star-black hole merger (primary heavier than 5 solar masses, secondary lighter than 3 solar masses) Probability that the source is a binary black hole merger (both objects heavier than 5 solar masses) Probability that the source has at least one object between 3 and 5 solar masses Probability that the source is terrestrial (i.e., a background noise fluctuation or a glitch) Source classification: binary neutron star (BNS), neutron star-black hole (NSBH), binary black hole (BBH), MassGap, or terrestrial (noise) Probability that at least one object in the binary has a mass that is less than 3 solar masses Probability that a nonzero mass was ejected outside the central remnant object Qualitative properties of the source, conditioned on the assumption that the signal is an astrophysical compact binary merger Candidate gravitational wave event identified by low-latency analysis L1: LIGO Livingston 4 km gravitational wave detector V1: Virgo 3 km gravitational wave detector Report of a candidate gravitational wave event 2019-09-02T00:06:03 LIGO Scientific Collaboration and Virgo Collaboration The Notice Type number is assigned/used within GCN, eg type=151 is an LVC_INITIAL notice Indicates whether this event should be distributed to LSC/Virgo members only A number that increments by 1 each time a new revision is issued for this event Identifier in GraceDB VOEvent alert type Indicates that this event is a hardware injection if 1, no if 0 Indicates that this event is an open alert if 1, no if 0 Web page for evolving status of this GW candidate List of instruments used in analysis to identify this event False alarm rate for GW candidates with this strength or greater Data analysis working group Low-latency data analysis pipeline Specific low-latency search Sky Map FITS Probability that the source is a binary neutron star merger (both objects lighter than 3 solar masses) Probability that the source is a neutron star-black hole merger (primary heavier than 5 solar masses, secondary lighter than 3 solar masses) Probability that the source is a binary black hole merger (both objects heavier than 5 solar masses) Probability that the source has at least one object between 3 and 5 solar masses Probability that the source is terrestrial (i.e., a background noise fluctuation or a glitch) Source classification: binary neutron star (BNS), neutron star-black hole (NSBH), binary black hole (BBH), MassGap, or terrestrial (noise) Probability that at least one object in the binary has a mass that is less than 3 solar masses Probability that a nonzero mass was ejected outside the central remnant object Qualitative properties of the source, conditioned on the assumption that the signal is an astrophysical compact binary merger Candidate gravitational wave event identified by low-latency analysis L1: LIGO Livingston 4 km gravitational wave detector V1: Virgo 3 km gravitational wave detector ivo://gwnet/LVC#S190901ap-1-Preliminary Initial localization is now available Report of a candidate gravitational wave event 2019-09-02T11:53:33 LIGO Scientific Collaboration and Virgo Collaboration The Notice Type number is assigned/used within GCN, eg type=152 is an LVC_UPDATE notice Indicates whether this event should be distributed to LSC/Virgo members only A number that increments by 1 each time a new revision is issued for this event Identifier in GraceDB VOEvent alert type Indicates that this event is a hardware injection if 1, no if 0 Indicates that this event is an open alert if 1, no if 0 Web page for evolving status of this GW candidate List of instruments used in analysis to identify this event False alarm rate for GW candidates with this strength or greater Data analysis working group Low-latency data analysis pipeline Specific low-latency search Sky Map FITS Probability that the source is a binary neutron star merger (both objects lighter than 3 solar masses) Probability that the source is a neutron star-black hole merger (primary heavier than 5 solar masses, secondary lighter than 3 solar masses) Probability that the source is a binary black hole merger (both objects heavier than 5 solar masses) Probability that the source has at least one object between 3 and 5 solar masses Probability that the source is terrestrial (i.e., a background noise fluctuation or a glitch) Source classification: binary neutron star (BNS), neutron star-black hole (NSBH), binary black hole (BBH), MassGap, or terrestrial (noise) Probability that at least one object in the binary has a mass that is less than 3 solar masses Probability that a nonzero mass was ejected outside the central remnant object Qualitative properties of the source, conditioned on the assumption that the signal is an astrophysical compact binary merger Candidate gravitational wave event identified by low-latency analysis L1: LIGO Livingston 4 km gravitational wave detector V1: Virgo 3 km gravitational wave detector ivo://gwnet/LVC#S190901ap-2-Initial ivo://gwnet/LVC#S190901ap-1-Preliminary Updated localization is now available Report of a candidate gravitational wave event