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 181202A: Swift/UVOT Detection
- GRB 181202A: RATIR Optical and NIR Observations
- GRB 181202A: Global MASTER-Net optical observations
- GRB 181202A: Swift-BAT refined analysis
- GRB 181202A: Swift-XRT refined Analysis
- GRB 181202A: Enhanced Swift-XRT position
- GRB 181202A: Swift detection of a burst with an optical counterpart