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"18 results found.
- GRB 140108A: Mondy optical observations, refined analysis
- GRB 140108A: Konkoly optical observations
- GRB 140108A: Suzaku WAM observation of the prompt emission
- GRB 140108A BAT refined analysis update *CORRECTION*
- GRB 140108A BAT refined analysis update
- GRB 140108A: Mondy optical upper limit
- GRB 140108A: Swift-BAT refined analysis
- GRB 140108A: Fermi GBM detection
- GRB 140108A: Swift/UVOT Detection
- GRB 140108A: theoretical prediction of redshift and of supernova occurrence
- GRB 140108A: Swift-XRT refined Analysis
- GRB 140108A: Enhanced Swift-XRT position
- GRB 140108A: Mondy optical observations
- GRB 140108A: D50+BART optical candidate detection
- GRB 140108A: 1.23m CAHA observations
- GRB 140108A: MASTER-Net OT detection
- GRB 140108A: Prompt enhanced Swift-XRT position
- GRB 140108A: Swift detection of a burst