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 070518, deep LBT photometry
- GRB 070518: MARGE Observations
- GRB 070518: optical observation
- GRB 070518: TNG observations
- VLA observation of GRB 070518
- GRB 070518: Swift-XRT refined analysis
- GRB 070518, Swift-BAT refined analysis
- GRB 070518: OT confirmed form Xinglong TNT observation
- GRB 070518: Swift detection of a burst with optical afterglow