Gravitational Wave Localization and Pointings: S230903ai [GraceDB]



GRB Coverage



XRT Sources


Pointing Status

Group CBC
Detectors H1,L1
Time of Signal 2023-09-03 15:53:50.881674 UTC
Time Sent 2023-09-03 15:54:11 UTC
False Alarm Rate once per 1.35 days
50% Area 731.864 deg2
90% Area 2650.489 deg2
Distance 471.163 +/- 157.124 Mpc
Classification (CBC Only)
BNS 0.00133
NSBH 0.00135
Mass Gap 0.55101
BBH 0.0
Terrestrial 0.99732
Has NS 1.0
Has Remnant 0.00745

Coverage Calculator

Calculate the coverage of the GW localization over time, with choices to limit the coverage calculation to particular sets of instruments, wavelengths, or depth. All fields are optional, but cuts on depths must have an associated unit. If an empty form is submitted, the total reported coverage regardless of depth or band is computed. Once a HEALPIX pixel has been first covered, it is marked as done, to avoid double counting probability when the same field is covered multiple times. After clicking, be patient, it may take up to 2 minutes to fully compute the coverage profile.
Instrument Depth Depth Unit Approximate For footprints with multiple ccd's this will approximate the calculator's input by using a simplified instrument footprint without chip-gaps. It is substantially faster, but does introduce a level of uncertainty in the resulting area and probability.
Band Spectral Range Filter pointings based on their wavelength, energy, or frequency range Type: Range: - Unit