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.
- Fermi GBM Sub-Threshold Detection of GRB 211207A
- GRB 211207A: Swift/UVOT Detection
- GRB 211207A: Swift-BAT refined analysis
- GRB 211207A: VLT/X-shooter redshift
- GRB 211207A: Swift-XRT refined Analysis
- GRB 211207A: Enhanced Swift-XRT position
- Swift GRB 211207A: Global MASTER-Net observations report
- GRB 211207A: Swift detection of a burst with an optical counterpart