GCN Circulars
GCN Circulars are rapid bulletins submitted by and distributed to the community. 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"10 results found.
- GRB 181126A: MeerKAT radio observation
- GRB 181126A: Swift-BAT refined analysis
- GRB 181126A: No Ks-band afterglow detection with Keck I
- GRB 181126A: Swift/UVOT Upper Limits
- GRB 181126A: Swift-XRT refined Analysis
- GRB 181126A deep Gemini imaging
- GRB 181126A: Fermi GBM observation
- GRB 181126A: Enhanced Swift-XRT position
- GRB 181126A: Prompt enhanced Swift-XRT position
- GRB 181126A: Swift detection of a burst