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"28215 results found.
- GRB980329 Keck K-band observations
- GRB980329 sub-millimeter observations
- GRB980329 near-IR observations
- GRB980329 optical observations
- GRB980329 optical observations
- GRB980329 VLA observations
- GRB980329 optical observations
- Near-IR follow-up on GRB 971227
- Optical Observations of the GRB 971227 field
- GRB971227: Plaskett R-band observations
- GRB 971227: Optical clarifications
- GRB971227: Further CAHA R-band images
- GRB 971227: CAHA R-band images
- GRB 971214: Redshift from Keck Optical Observations
- GRB 971214: KPNO Optical Observations