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 140521A: AAO optical upper limit
- GRB 140521A : Xinglong TNT upper limit
- GRB 140521A: Fermi GBM Detection
- GRB 140521A: AAO optical observations
- GRB 140521A: Swift-BAT refined analysis
- GRB 140521A: AROMA-N Optical Observation
- GRB 140521A: MITSuME Okayama upper limits
- GRB 140521A: MASTER optical observations
- GRB 140521A: Swift detection of a burst