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 090807: Skynet/DSO Observations
- GRB 090807: Liverpool Telescope observations
- GRB 090807: MITSuME optical upper limit
- GRB 090807: Swift/UVOT Upper Limits
- GRB 090807: Swift-XRT refined analysis
- GRB 090807, Swift-BAT refined analysis
- GRB 090807: Enhanced Swift-XRT position
- GRB 090807, RIMOTS optical upper limits
- GRB 090807: Swift detection of a burst