The Jan 28 release contained errors in the Galactic Extinctions tab; this bug was fixed on Feb 7 2200 UTC.
Gravitational Wave Followup Events
IMPORTANT: All names that begin with "MS" are mock/test events ("Mock Superevent"; only the 5 latest will be displayed).
Only names that begin with "GW" or "S" are possible real GW events ("Superevent").
For more information, see the Gravitational Wave Candidate Event Database.↗
Note: The NED and Census of the Local Universe (CLU) projects are issuing a joint notice of candidate galaxies for each GW trigger. While a large fraction of the galaxies in CLU catalog come from NED, there are galaxies in CLU that have not yet been ingested into NED, and NED is continually updating its holdings. Thus, some of the CLU top 20 galaxies listed in the GCN notices may not be in the NED list on this website. In addition, the NED service sorts its galaxies differently than CLU. However, the overall composition of the CLU and NED galaxy lists will be similar.
Sky Localization for S250223fw-2-Preliminary Cross-Matched with Galaxies in NED
At the time of the alert, this event was beyond the distance supported by this service (1000 Mpc).graceID↗ | EventDate | Distance (Mpc) | Instruments | Classification | HasNS | HasRemnant | HasMassGap | FAR |
---|---|---|---|---|---|---|---|---|
S250223fw | 2025-02-23 18:18:00 (UTC) | 4458.7 +/- 1613 | H1,L1,V1 | Terrestrial (80%), BBH (19%) | 0.0 | 0.0 | 0.00411 | 203.71 per year |
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