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').
10 results found.
- GRB 210618A: 1.5m OSN optical upper limit
- GRB 210618A: Swift-XRT afterglow detection
- GRB 210618A: Swift/UVOT Upper Limits
- GRB 210618A: BOOTES-2/TELMA optical upper limit
- GRB 210618A: Swift-BAT refined analysis
- GRB 210618A: Fermi GBM observation
- GRB 210618A: Swift-XRT observations
- GRB 210618A: DDOTI upper limit for the optical afterglow
- GRB 210618A: Swift detection of a burst
- GRB 210618A: Fermi GBM Final Real-time Localization