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.
- Konus-Wind detection of GRB 220506A
- GRB 220506A: MITSuME Akeno optical upper limits
- GRB 220506A: GIT optical upper limit.
- GRB 220506A: BOOTES-5/JGT optical upper limit
- GRB 220506A: Swift-XRT afterglow detection
- GRB 220506A: Tiled Swift observations
- GRB 220506A/MAXI J1558-266: MAXI/GSC detection