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').
9 results found.
- GRB 140320A: RATIR Optical and NIR Observations
- GRB 140320A: Swift-BAT refined analysis
- GRB 140320A: Swift/UVOT Upper Limits
- GRB 140320A: Confirmation of a fading X-ray afterglow
- GRB 140320A: Fermi GBM detection
- GRB 140320A: Enhanced Swift-XRT position
- GRB 140320A: Swift-XRT detection of an afterglow candidate
- GRB 140320A: Fermi GBM observations suggest a short GRB
- GRB 140320A: Swift detection of a burst