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"13 results found.
- GRB 080506: NAYUTA Optical Observation
- GRB 080506:Optical observations from HCT
- GRB 080506: VLA radio upper limit
- GRB 080506: TLS 2nd Epoch - possible light curve break
- GRB 080506: Swift XRT refined analysis
- GRB080506: Swift/UVOT observations
- GRB 080506, Swift-BAT refined analysis
- GRB 080506: Observations from NOT
- GRB 080506: optical observation from Ondrejov
- GRB 080506: TLS afterglow detection in VRIZ
- GRB 080506: Enhanced Swift-XRT position
- GRB 080506: Optical observation with KANATA/TRISPEC
- GRB 080506: Swift detection of a burst with optical afterglow