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"15 results found.
- GRB081029: Swift XRT refined analysis
- GRB 080229: NIR upper limit
- VLA possible radio detection of GRB 080229
- GRB 080229: I-band observations from OSN
- GRB 080229: VLT NIR observations
- GRB080229: Swift XRT refined analysis
- GRB 080229: TNG NIR observations
- GRB 080229: Deep Gemini/GMOS optical observations
- GRB 080229: Enhanced Swift-XRT position
- GRB 080229: REM NIR observations
- GRB080229: Possible optical afterglow
- UVOT analysis for GRB080229
- GRB 080229, Swift-BAT refined analysis
- GRB 080229: Faulkes Telescope South optical limit
- GRB 080229: Swift detection of a bright burst