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 210318B: Swift/UVOT Upper Limits
- GRB 210318B: MITSuME Okayama optical upper limits
- GRB 210318B: Fermi GBM detection
- GRB 210318B: Swift-BAT refined analysis
- Konus-Wind detection of GRB 210318B
- GRB210318B: Swift detection of a burst