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"8 results found.
- GRB 140320B: Swift-XRT refined Analysis
- GRB 140320B: P60 detection of a very red afterglow
- GRB 140320B: Swift/UVOT Upper Limits
- GRB 140320B: Swift-XRT detection of the afterglow
- GRB 140320B: Xinglong TNT upper limit
- GRB 140320B: ISON-NM optical observations
- GRB 140320B: A long GRB detected by INTEGRAL
- GRB 140320B: FTN optical afterglow candidate