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"8518 results found.
- GRB981226 Optical Observations
- GRB 981226 optical observations
- GRB980425 Optical Follow-up
- SGR1900+14, BeppoSAX-GRBM observations
- GRB 980703 H-band Observations
- GRB980703: radio source/optical transient
- Reduced error box of SGR 1627-41
- GRB 980613 optical/IR obs.
- GRB980613 Near Infra-Red Observations
- GRB980519 Optical Observations
- GRB980515, BeppoSAX IAUC to be submitted
- GRB 980425 Radio Light Curve
- GRB 980425 Brightness Temperature
- GRB980425: Radio Observations
- GRB980326 X-ray Observations
- GRB971214: Keck R & I-band Observations
- GRB971214: Optical Observations and Calibrations
- GRB 971214: KPNO Optical Observations