GCN Circulars
GCN Circulars are rapid bulletins submitted by and distributed to the community. See the documentation for help with subscribing to or submitting Circulars.
Search for Circulars by submitter, subject, or body text (e.g. 'Fermi GRB').
To navigate to a specific circular, enter the associated Circular ID (e.g. 'gcn123', 'Circular 123', or '123').
To navigate to a specific circular, enter the associated Circular ID (e.g. 'gcn123', 'Circular 123', or '123').
Advanced Search
To narrow the search results, use advanced search syntax. This allows for specifying which circular field to search (submitter, subject, and/or body). For additional information, refer to the advanced search documentation.
Advanced Search Examples (click to copy):
subject:"Swift"body:"GRB"submitter:"Judith Racusin"5 results found.
- GRB 241108A: Further COLIBRÍ Upper Limits on the Optical Counterpart
- GRB 241108A: Swift-XRT observations
- GRB 241108A: Swift ToO observations
- GRB 241108A: COLIBRÍ Upper Limits on the Optical Counterpart
- GRB 241108A : a likely weak long GRB detected by SVOM/ECLAIRs