This page displays the outcomes of the Fermi-LAT automatic follow-up analysis pipeline used to search for electromagnetic counterparts of gravitational waves (GW). For a detailed explanation of the analysis techniques, please refer to 2017ApJ...841L..16V. Furthermore, the Fermi-LAT Collaboration has published additional papers on GW events such as GW150914, LVT151012 and GW151226, GW170104, and GW170817
All analysis results should be considered preliminary, unless otherwise noted. If you have any questions, please write to Niccolò Di Lalla.
Click on the following buttons to access the table associated with the corresponding observing cycle:
Stop your mouse cursor over the table headings to view a short explanation of the columns in the table or check the legend here.
* Information taken from GraceDB (LIGO-Virgo-KAGRA Collaboration).
A total of 55 events are available: 36 BBH, 6 BNS, 5 NSBH, 3 Terrestrial, 4 MassGap and 1 Burst
Table Legend
Trigger Name: LIGO-Virgo-KAGRA event name
Date: LIGO-Virgo-KAGRA event date
Time: LIGO-Virgo-KAGRA event time
GraceDB: LIGO-Virgo-KAGRA link to the GraceDB webpage
FAR [Hz]: LIGO-Virgo-KAGRA False Alarm Rate. Used to describe the significance of the event
Highest Probability: LIGO-Virgo-KAGRA most probable source association. Can be BNS (binary neutron star), BBH (binary black hole), NSBH (neutron star black hole), MassGap (with one component between 3 and 5 solar masses), Terrestrial (instrumental or environmental origin) or Burst (unmodeled event)
Has Remnant?: LIGO-Virgo-KAGRA probability that the system ejected a non-zero amount of neutron star matter
FTI TS max: Fermi-LAT maximum value of the Test Statistic for the Fixed Time Interval analysis
ATI TS max: Fermi-LAT maximum value of the Test Statistic for the Adaptive Time Interval analysis
Flux UB [erg/cm2/s]: Fermi-LAT Bayesian flux Upper Bound at 95% of credibility interval for the fixed time interval analysis
Analysis Report: Fermi-LAT link to the analysis report webpage
Stop your mouse cursor over the table headings to view a short explanation of the columns in the table or check the legend here.
* Information taken from GraceDB (LIGO-Virgo-KAGRA Collaboration).
A total of 74 significant events are available: 71 BBH, 0 BNS, 3 NSBH, 0 Terrestrial and 0 Burst
Table Legend
Trigger Name: LIGO-Virgo-KAGRA event name
Date: LIGO-Virgo-KAGRA event date
Time: LIGO-Virgo-KAGRA event time
GraceDB: LIGO-Virgo-KAGRA link to the GraceDB webpage
FAR [Hz]: LIGO-Virgo-KAGRA False Alarm Rate. Used to describe the significance of the event
Highest Probability: LIGO-Virgo-KAGRA most probable source association. Can be BNS (binary neutron star), BBH (binary black hole), NSBH (neutron star black hole), Terrestrial (instrumental or environmental origin) or Burst (unmodeled event)
Has NS?: LIGO-Virgo-KAGRA probability that at least one of the compact objects was a neutron star'
Has Remnant?: LIGO-Virgo-KAGRA probability that the system ejected a non-zero amount of neutron star matter
Has MassGap?: LIGO-Virgo-KAGRA probability that at least one of the compact objects has mass in the range 3-5 solar masses
Inst. Coverage: Fermi-LAT coverage of the 90% LVK localization map at the GW trigger time
FTI TS max: Fermi-LAT maximum value of the Test Statistic for the Fixed Time Interval analysis
ATI TS max: Fermi-LAT maximum value of the Test Statistic for the Adaptive Time Interval analysis
Flux UB [erg/cm2/s]: Fermi-LAT Bayesian flux Upper Bound at 95% of credibility interval for the fixed time interval analysis
Analysis Report: Fermi-LAT link to the analysis report webpage