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').
13 results found.
- GRB 160821B: HST detection of the optical and IR counterpart
- GRB 160821B: 15 GHz upper limits from AMI
- GRB 160821B: VLA 5.0 GHz observations
- GRB 160821B: GTC follow-up observation
- GRB 160821B: WHT afterglow confirmation and redshift of candidate host
- GRB 160821B: Swift-BAT refined analysis
- GRB 160821B: Fermi GBM Detection
- GRB 160821B: Swift-XRT refined Analysis
- GRB 160821B: Swift/UVOT Upper Limits
- Short GRB 160821B: MASTER early optical observations
- GRB 160821B: Enhanced Swift-XRT position
- GRB 160821B: NOT optical afterglow candidate
- GRB 160821B: Swift detection of a short burst