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').
10 results found.
- GRB 090118: no afterglow candidate
- GRB 090118: Swift XRT Observations - Confirmation of an Afterglow
- GRB 090118: Subaru NIR Observation
- GRB 090118: KPNO 4m 2nd Epoch Observations
- GRB 090118 (BATSS): GRT Optical Observation
- GRB 090118: KPNO 4m Detection of Candidate Afterglow
- GRB 090118: Swift-XRT observations
- GRB090118 Swift/UVOT upper limits
- GRB 090118: GROND Upper Limits
- GRB 090118: Possible burst detection from Swift-BAT slew data