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.
Advanced Search Examples (click to copy):
subject:"Swift"body:"GRB"submitter:"Judith Racusin"14 results found.
- GRB051008: Suzaku WAM observation of the prompt emission
- GRB 051008 Tautenburg Supernova Search
- GRB 051008: - a high redshift high-luminosity burst?
- GRB 051008 - a low redshift low-luminosity burst?
- GRB051008: Swift XRT refined analysis
- GRB051008 - Swift UVOT upper limits
- Konus-Wind observation of GRB 051008
- GRB051008: Final refined analysis of the Swift-BAT burst
- GRB 051008: R-band upper limit
- GRB051008: Radio Observation
- GRB 051008: Swift XRT position
- GRB 051008, optical observations
- GRB 051008: early Swift XRT analysis
- GRB 051008: Swift UVOT Candidate