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"15 results found.
- GRB 190114A: NOEMA detection of the mm afterglow
- GRB 190114A:DOAO/LOAO optical observation
- GRB 190114A: DOAO/LOAO optical observation
- GRB 190114A: Swift/UVOT Observations
- GRB 190114A: Mondy optical afterglow detectio
- GRB 190114A: NOT optical observations
- GRB 190114A: OSN Detection
- GRB 190114A: Swift-BAT refined analysis
- GRB 190114A: Swift-XRT refined Analysis
- GRB 190114A: GROND detection of the afterglow
- GRB 190114A: Enhanced Swift-XRT position
- GRB 190114A: VLT/X-shooter redshift
- GRB 190114A: Prompt enhanced Swift-XRT position
- GRB 190114A: Possible UVOT Detection
- GRB 190114A: Swift detection of a burst