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"6828 results found.
- Late-time HST/STIS Observations of GRB 990510
- X-ray/GRB 1SAX J0835.9+5118, BATSE Observation
- GRB 990510: BATSE Observations
- GRB 990510 Optical Observations
- GRB 990506: BATSE Observations
- GRB 990506, Optical Observations
- GRB 990506 optical observations
- GRB 990506 optical observations
- GRB 990316 optical observations
- GRB990123, 15-GHz limits
- GRB 990123: BATSE Observations
- GRB 990123 Optical Follow-up
- GRB981220, Optical Observations
- GRB 981220:Optical Observations
- GRB 981226 - Infrared Observations
- GRB 980326/Host Galaxy
- GRB 980923 BATSE Observations
- GRB980703, Host galaxy multicolor photometry
- GRB 980703: BATSE Observations
- GRB 980613: BATSE Observations
- SGR1900+14
- SGR1900+14
- GRB980519 BATSE Observations
- BATSE on-board GRB trigger change
- GRB980425 BATSE observations
- GRB980329
- GRB 971214: KPNO Optical Observations
- GRB 970228: Keck/LRIS Optical Observations