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').
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"13 results found.
- Possible radio detection of GRB160703A with the GMRT
- GRB160703A: Astrosat CZTI detection
- GRB 160703A: 15 GHz upper limits from AMI
- GRB 160703A: Keck-I/LRIS Optical Observations
- GRB 160703A: Swift/UVOT Detection
- GRB 160703A: Swift-XRT afterglow detection
- GRB 160703A: MITSuME Ishigakijima Optical Observation
- GRB 160703A: MITSuME Akeno Optical Observations
- GRB 160703A: Bassano Bresciano Observatory upper limits
- Konus-Wind observation of GRB 160703A
- GRB 160703A: Swift-BAT refined analysis
- GRB 160703A: Zadko observatory - Gingin optical observations
- GRB 160703A: Swift detection of a burst