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"41707 results found.
- GRB 971024: USNO Observations
- GRB 970925: BATSE Localization
- IRAS 18119-1342 and the possible new SGR
- Possible new SGR from US Naval Observatory
- RXTE Observations of SGR 1814-13
- GRB 970828: Palomar Observations
- GRB 970228: Keck/LRIS Optical Observations