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"15 results found.
- GRB 130515A: Suzaku WAM observation of the prompt emission
- GRB 130515A: IRSF NIR Observation
- GRB 130515A: Further Gemini Observations
- Konus-Wind observation of GRB 130515A
- GRB 130515A: FORS2 spectroscopy of candidate counterpart
- GRB 130515A: Fermi GBM detection
- GRB 130515A: Swift-XRT refined Analysis
- GRB 130515A: Swift/UVOT Upper Limits
- GRB 130515A: Swift-BAT refined analysis
- GRB 130515A: Gemini/GMOS Observations
- GRB 130515A: GROND Observations
- GRB 130515A: Enhanced Swift-XRT position
- GRB 130515A: VLT acquisition observation
- GRB 130515A: Swift detection of a short burst
- GRB 130514A: Skynet/PROMPT/DSO Detections