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.
Lucene Examples (click to copy):
subject:"Swift"body:"GRB"submitter:"Judith Racusin"12 results found.
- GRB 160127A: RATIR Optical Observations
- GRB 160127A: Khureltogot optical observations
- GRB 160127A: MITSuME Akeno optical upper limits
- GRB 160127A: VLA Detection
- GRB 160127A: LCOGT-Sutherland optical upper limit
- GRB 160127A: Swift/UVOT Detection
- GRB 160127A: Swift-BAT refined analysis
- GRB 160127A: Swift-XRT refined Analysis
- GRB 160127A: RATIR Optical Observations
- GRB 160127A: Enhanced Swift-XRT position
- GRB 160127A: TAROT La Silla observatory optical light curve
- GRB 160127A: Swift detection of a burst with an optical counterpart