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"11 results found.
- GRB 140323A: Zadko observatory - Gingin optical observations
- GRB 140323A : Suzaku WAM observation of the prompt emission
- Konus-Wind observation of GRB 140323A
- GRB 140323A: Fermi-LAT detection
- GRB 140323A: Swift-XRT refined Analysis
- GRB 140323A: Fermi GBM observation
- GRB 140323A: BOOTES-3 optical upper limit.
- GRB 140323A: Swift/UVOT Upper Limits
- GRB 140323A: Swift-BAT refined analysis
- GRB 140323A: Enhanced Swift-XRT position
- GRB 140323A: Swift detection of a burst