Skip to main content
New! Browse Circulars by Event, Advanced Search, Sample Codes, Schema Release. See news and announcements

LIGO/Virgo/KAGRA S250720j

GCN Circular 41124

Subject
LIGO/Virgo/KAGRA S250720j: Retraction of GW compact binary merger candidate
Date
2025-07-20T03:09:16Z (19 hours ago)
From
Sourav Das at IUCAA <sourav.das@iucaa.in>
Via
Web form
The LIGO Scientific Collaboration, the Virgo Collaboration, and the KAGRA Collaboration report:

The trigger S250720j is no longer considered to be a candidate of interest. The significance arose from a coincidence with a Fermi GRB trigger. Further analysis by Fermi showed that the event was not a GRB [1]. 

[1] R. Hamburg, et al., GCN Circ. 41123 (https://gcn.nasa.gov/circulars/41123)
Questions or comments?
Contact GCN directly.
Have you found a bug in GCN?
Open an issue.
Want to contribute code to GCN?
Get involved on GitHub.

gcn.nasa.gov

A service of the Astrophysics Science Division at NASA Goddard Space Flight Center

Looking for U.S. government information and services? Visit USA.gov