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"7 results found.
- GRB 140818A: GROND confirmation of afterglow candidate
- Konus-Wind observation of GRB 140818A
- GRB 140818A - Fermi GBM Detection
- GRB 140818A: Swift-XRT and UVOT potential afterglow detection
- GRB 140818A: Correction to GCN 16702
- GRB 140818A Tiled Swift observations
- GRB 140818A: MAXI/GSC detection