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.
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').
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