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"16318 results found.
- GRB971227: Plaskett R-band observations
- GRB 971227: Optical clarifications
- Optical Observations for GRB 971227
- GRB971227: Further CAHA R-band images
- GRB971227: LOTIS observations
- GRB 971227: Optical observations
- GRB971214: Optical Observations and Calibrations
- Sub-millimeter Observations of GRB 971214 at the JCMT
- GRB 971214: Redshift from Keck Optical Observations
- GRB 971214: Redshift from Keck Optical Observations
- GRB 971214: Apache Point Observatory Optical Observations
- GRB 971214: KPNO Optical Observations
- Optical Observations of GRB 971214 at Keck
- GRB 971214: Optical Observations
- GRB 971024: KPNO Optical Observations Summary
- GRB 971024: KPNO Optical Observations
- GRB 970828: Palomar Observations
- GRB 970228: Keck/LRIS Optical Observations