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"9 results found.
- GRB 200809B: Fermi GBM detection
- Fermi GRB 200809B: Global MASTER-Net observations report
- GRB 200809B: BOOTES-3/YA optical upper limit
- GRB 200809B: Swift-XRT afterglow detection
- GRB 200809B: MAXI/GSC detection
- GRB 200809B: Swift ToO observations
- GRB 200809B: AstroSat CZTI detection
- GRB 200809B: Swift/BAT-GUANO detection and arcminute localization
- GRB 200809B: Fermi GBM Final Real-time Localization