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').
6 results found.
- GRB 161220A: Swift-BAT refined analysis
- GRB 161220A: Swift-XRT refined Analysis
- GRB 161220A: LCO-FTS observations
- GRB 161220A: GROND Upper Limits
- GRB 161220A: Swift/UVOT Upper Limits
- GRB 161220A: Swift detection of a burst