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"19 results found.
- GRB 120624B: VLA Observations
- GRB 120624B: mm detection at PdBI
- GRB 120624B Suzaku WAM observation of the prompt emission
- GRB120624B: Chandra observations and afterglow detection
- GRB 120624B Further Swift-XRT analysis
- GRB 120624B: Swift/UVOT Upper Limits
- GRB 120624B: Further analysis of the HAWKI observations
- GRB 120624B: Swift-XRT observations
- GRB 120624B: GROND upper limits
- GRB 120624B: NIR counterpart candidate from HAWKI
- GRB 120624B: Discussion of Fermi and Swift measurements and future Swift observations
- GRB 120624B: NOT optical upper limit
- GRB 120624B: optical observations
- GRB 120624B, Swift-BAT refined analysis
- GRB 120624B: Fermi GBM fluence and peak photon flux correction
- Konus-Wind observation of GRB 120624B
- GRB 120624B: Swift detection of a burst
- GRB 120624B: Fermi-LAT Detection
- GRB 120624B: Fermi GBM detection