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"23 results found.
- GRB 161219B: afterglow and SN2016jca optical observations
- PESSTO follow-up of GRB 161219B/SN2016jca
- GMRT radio detection of GRB 161219B
- GRB 161219B: Spectroscopic detection of the associated SN with OSIRIS/GTC
- GRB 161219B: UKIRT near-IR afterglow detection
- GRB 161219B: POLAR Observation
- GRB161219.78 MASTER-Net OT detection
- GRB 161219B: Rapid ALMA Observations & Detection
- Correction to GCN 20323 "Konus-Wind observation of GRB 161219B"
- Konus-Wind observation of GRB 161219B
- GRB 161219B: SALT observations
- GRB 161219B: VLT/X-shooter redshift
- GRB 161219B: MITSuME Akeno Optical Observation
- GRB 161219B: VLA Detection
- GRB 161219B: ISON/Terskol optical observations
- GRB 161219B: Swift-BAT refined analysis
- GRB 161219B: Swift/UVOT Detection
- GRB 161219B: Watcher optical observations
- GRB 161219B: LCO Sutherland observations
- GRB 161219B: GROND afterglow observations
- GRB 161219B: Swift-XRT refined Analysis
- GRB 161219B: Enhanced Swift-XRT position
- GRB 161219B: Swift detection of a burst with an optical afterglow