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.
To navigate to a specific circular, enter the associated Circular ID (e.g. 'gcn123', 'Circular 123', or '123').
Advanced Search
To narrow the search results, use advanced search syntax. This allows for specifying which circular field to search (submitter, subject, and/or body). For additional information, refer to the advanced search documentation.
Lucene Examples (click to copy):
subject:"Swift"
body:"GRB"
submitter:"Judith Racusin"
8 results found.
- GRB 070808: Swift/UVOT upper limits
- GRB 070808 : Faulkes Telescope South Observations
- GRB 070808: Swift XRT refined analysis
- GRB 070808, Swift-BAT refined analysis
- GRB 070808: OPTIMA-Burst optical upper limit
- GRB 070808: Xinglong TNT optical Upper Limit
- GRB 070808: ROTSE-III Optical Limits
- GRB 070808: Swift detection of a burst