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 140709A, the review of the sky area in plate archives
- GRB 140709A: Possible AMI 15 GHz detection
- GRB 140709A: Continued RATIR Optical and NIR Observations
- GRB 140709A: 10.4m GTC optical decay
- GRB 140709A : Virtual Telescope optical observations
- GRB 140709A: Fermi GBM detection
- GRB 140709A: BOOTES-2 and OSN optical observations
- GRB 140709A, Swift-BAT refined analysis
- GRB 140709A: Swift-XRT refined Analysis
- GRB 140709A: Swift/UVOT Upper Limits
- GRB 140709A - UVOT-enhanced XRT position
- GRB 140709A: RATIR Optical and NIR Observations
- GRB 140709A: Swift detection of a burst