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 240504A: VZLUSAT-2 detection
- GRB 240504A: Fermi GBM Observation
- IPN triangulation of GRB 240504A
- GRB 240504A: Swift/BAT-GUANO detection of a burst outside the coded FOV
- Fermi GRB 240504A: Global MASTER-Net observations report
- GRB 240504A: BALROG localization (Fermi Trigger 736492377 / GRB 240504217)
- GRB 240504A: Fermi GBM Final Real-time Localization