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"23618 results found.
- GRB980329 optical observations
- GRB980326 optical observations
- GRB970508 SAO RAS optical observations
- Near-IR follow-up on GRB 971227
- GRB971227: Plaskett R-band observations
- GRB 971227: Optical clarifications
- GRB971227: Further CAHA R-band images
- GRB971227: LOTIS observations
- GRB 971227: CAHA R-band images
- GRB971214: Optical Observations and Calibrations
- GRB 971214: EUVE Observations
- GRB 971214: Redshift from Keck Optical Observations
- GRB 971214: Redshift from Keck Optical Observations
- Optical Observations of GRB 971214 at Keck
- GRB 971214: Optical Observations
- GRB 971024: Refined analysis by USNOFS Observations
- GRB 971024: USNO Observations
- IRAS 18119-1342 and the possible new SGR