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"17 results found.
- Possible radio detection of GRB 160910A with the GMRT
- GRB 160910A: 15 GHz detection from AMI
- GRB 160910A: TSHAO optical observations
- GRB 160910A: Maidanak optical observations
- GRB 160910A: Swift/UVOT Detection
- GRB 160910A: Mondy optical observations
- GRB 160910A: Global MASTER Net OT detection before LAT alert
- Konus-Wind observation of GRB 160910A
- GRB 160910A: Correction to GCN 19904
- GRB 160910A: XRT results and corrections to GCN 19905 & 19906
- GRB 160910A: CALET Gamma-Ray Burst Monitor detection
- GRB 160910A: NOT afterglow confirmation
- GRB 160910A: Afterglow detection from OSN
- GRB 160910A: Tiled Swift observations
- GRB 160910A: Swift-XRT afterglow detection
- GRB 160910A: Fermi-LAT detection
- GRB 160910A: Fermi GBM observation