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"14 results found.
- XMM-Newton observation of the short GRB 111020A
- GRB 111020A: Chandra Observation
- GRB 111020A Spectral lag analysis
- GRB 111020A: Gemini-South additional observations and limit on an optical afterglow
- GRB 111020A: EVLA observations
- GRB 111020A: Swift-XRT refined Analysis
- GRB 111020A: Gemini-South i-band observations
- GRB 111020A: Swift/UVOT Upper Limits
- GRB 111020A: Faulkes Telescope South observations
- GRB 111020A: Swift-BAT refined analysis
- GRB 111020A: Enhanced Swift-XRT position
- GRB 111020A: BOOTES-3 Optical Upper Limit.
- GRB 111020A: Planned XMM-Newton observation
- GRB 111020A: Swift detection of a short burst