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').
7 results found.
- GRB 200424A: Swift-XRT afterglow detection
- GRB 200424A: Swift/UVOT Upper Limits
- GRB 200424A: AstroSat CZTI detection
- GRB 200424A: Swift-XRT observations
- GRB 200424A: LCO Optical Upper Limit
- GRB 200424A: Swift ToO observations
- GRB 200424A: a long GRB detected by INTEGRAL