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.
- Radio observation of GRB 090117 with ATCA
- GRB 090117: confirmation of the X-ray afterglow
- GRB 090117 - Fermi GBM Observations
- GRB 090117: GROND Upper Limits
- GRB090117 Swift/UVOT upper limits
- GRB090117: Swift-XRT detection of a possible candidate afterglow
- GRB 090117 - SuperAGILE Localization of a long GRB