GCN Circulars
GCN Circulars are rapid astronomical bulletins submitted by and distributed to community members worldwide. They are used to share discoveries, observations, quantitative near-term predictions, requests for follow-up observations, or future observing plans related to high-energy, multi-messenger, and variable or transient astrophysical events. See the documentation for help with subscribing to or submitting Circulars.
To navigate to a specific circular, enter the associated Circular ID (e.g. 'gcn123', 'Circular 123', or '123').
20 results found.
- GRB 210222B: TAROT Reunion observatory optical light curve
- GRB 210222B: 1.3m DFOT Optical upper limit
- GRB 210222B: REM observations of the optical/NIR afterglow
- GRB 210222B: MITSuME Akeno optical upper limits
- GRB 210222B: Zeiss-1000 of Koshka observatory, optical observations
- GRB 210222B: VIRT optical detection
- GRB 210222B: Swift-BAT refined analysis
- GRB 210222B: Swift-XRT refined Analysis
- GRB 210222B: Swift/UVOT Detection
- GRB 210222B: KAIT Optical Upper Limit
- GRB 210222B: FRAM-ORM afterglow detection
- GRB 210222B: MASTER OT observation
- GRB 210222B: Redshift from FORS2/VLT
- GRB 210222B: NEXT early optical afterglow observations
- GRB 210222B: GOTO confirmation of afterglow detection (correction to GCN29548)
- GRB 210222B: Liverpool Telescope optical detection
- GRB 210222B: GOTO confirmation of afterglow detection
- GRB210222B: LCO Optical Afterglow Detection
- GRB210222B: BOOTES-1 optical afterglow detection
- GRB 210222B: Swift detection of a burst with an optical counterpart