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"6 results found.
- Further Swift-XRT observations of the GRB 120919A field.
- GRB 120919A: Swift/UVOT Upper Limits
- GRB 120919A: Swift-XRT observations
- Konus-Wind observation of GRB 120919A
- IPN Triangulation of long GRB 120919A
- GRB 120919A: Fermi GBM detection