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"19 results found.
- GRB 141121A: AAO optical observations
- GRB 141109A: further VLA observations
- GRB 141109A: VLA detection
- GRB 141109A: TAROT La Silla observatory optical observations
- GRB 141109A: AAO optical observations
- GRB 141109A: Terskol photometry
- GRB 141109A: Swift/UVOT Detection
- GRB 141109A: NOT r-band observation
- Konus-Wind observation of GRB 141109A
- GRB141109A : Xinglong TNT optical observation
- GRB 141109A: MITSuME Ishigakijima upper limits
- GRB 141109A: Swift-XRT refined Analysis
- GRB 141109A: Swift-BAT refined analysis
- GRB 141109A: Enhanced Swift-XRT position
- GRB 141109A: CQUEAN Detection at 0.85 - 1.05 micron
- GRB 141109A: GROND afterglow observation
- X-shooter redshift of GRB 141109A
- GRB 141109A: REM NIR candidate afterglow
- GRB 141109A: Swift detection of a burst