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').
8 results found.
- GRB 201208A: Swift-XRT afterglow detection
- GRB 201208A: Fermi GBM observation
- GRB 201208A: LCO observations
- GRB 201208A: Fermi-LAT detection
- GRB 201208A: Swift ToO observations
- GRB 201208A: AstroSat CZTI detection
- Fermi GRB 201208A: Global MASTER-Net observations report
- GRB 201208A: Fermi GBM Final Real-time Localization