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"19613 results found.
- Swift-BAT detection of the bright long burst GRB041219
- GRB 041218: Optical Observation
- GRB041217: optical limit 30 min after GRB
- GRB041217: Optical Observations
- GRB041217: NIR and optical observations with REM
- GRB041217: P60 Optical Observations
- GRB041217: Infrared Observations
- GRB041217: The First GRB Located On-Board Swift
- GRB040916: Optical observations
- GRB040422: optical and NIR observations at the VLT
- GRB040223, improved XMM position
- SN 2003jd (SN/GRB?) - possible association with GRB 030929
- GRB 030329, the review of the sky area in plate archive (1950-1998)