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 081230: GROND confirmation of the afterglow
- GRB 081230, Swift-BAT refined analysis
- GRB081230: Swift-XRT refined analysis
- GRB 081230 Swift/UVOT Observations
- GRB 081230: Enhanced Swift-XRT position
- GRB 081230: Swift/UVOT Detection of an Optical Afterglow
- GRB 081230: ROTSE-III Detection of Optical Counterpart
- GRB 081230: Swift detection of a burst