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"11 results found.
- Refined IPN Triangulation of GRB 130502B
- GRB 130502B: Suzaku WAM observation of the prompt emission
- GRB 130502B: Swift-XRT refined Analysis
- GRB 130502B: possible TNG counterpart
- IPN Triangulation of GRB 130502B
- GRB 130502B: Swift/UVOT Upper Limits
- Konus-Wind observation of GRB 130502B
- GRB 130502B: P60 Observations
- GRB 130502B Swift-XRT observations
- GRB 130502B: Fermi LAT Detection
- GRB 130502B: Fermi GBM detection of a burst