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 211129A: Swift-BAT refined analysis
- GRB 211129A: Swift-XRT refined Analysis
- GRB 211129A: Swift/UVOT Upper Limits
- GRB 211129A: Fermi GBM observation
- Swift GRB 211129A: Global MASTER-Net observations report
- GRB 211129A: Nanshan/NEXT optical upper limit
- GRB 211129A: Enhanced Swift-XRT position
- GRB 211129A: MITSuME Akeno optical upper limits
- GRB 211129A: Swift detection of a burst