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"2408 results found.
- Type Ic SN2003L (SN/GRB?), optical spectrum
- SN2002ap (SN/GRB?) Echelle spectra
- GRB 001109 X-ray afterglow with BeppoSAX
- GRB000418, UBVRI field photometry update
- GRB 000418, UBVRI field photometry
- Late-time HST/STIS Observations of GRB 990510
- Late Afterglows of GRBs 990510, 990123
- IRAS 18119-1342 and the possible new SGR