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"13 results found.
- GRB 160313A: 15 GHz upper limits from AMI
- GRB 160313A: Mondy optical upper limit
- GRB 160313A: Swift/UVOT Upper Limits
- GRB 160313A, Swift-BAT refined analysis
- GRB 160313A: Chante-Perdrix Observatory optical observations
- GRB 160313A: MASTER-Net optical observations
- GRB 160313A: LT observations
- GRB 160313A: Swift-XRT refined Analysis
- GRB 160313A: TAROT Calern observatory optical observations
- GRB 160313A: Enhanced Swift-XRT position
- GRB 160313A: RATIR Optical and NIR Observations
- GRB 160313A: SAO RAS observations
- GRB 160313A: Swift detection of a burst