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 151228A: Correction to GCN 18770
- GRB 151228A: Swift-XRT refined Analysis
- GRB 151228A: Swift-BAT refined analysis
- GRB 151228A: MITSuME Akeno optical upper limits
- GRB 151228A: T60 observations
- GRB 151228A: Fermi GBM observation
- GRB 151228A: Swift detection of a short burst