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 220302A: Swift/UVOT Upper Limits
- GRB 220302A: Swift-XRT refined Analysis
- GRB 220302A: BOOTES-5/JGT optical upper limit
- GRB 220302A: Enhanced Swift-XRT position
- GRB 220302A: Swift afterglow detection
- Swift GRB 220302A: Global MASTER-Net observations report
- GRB 220302A: Swift detection of a burst