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 060210: Jet Break in the XRT light curve
- GRB 060210: Radio Observations
- GRB 060210: ARC NIR Detection of Afterglow and Possible Host Galaxy
- GRB 060210: Further refined analysis of the Swift-BAT burst
- GRB060210: Swift/UVOT Upper Limits
- GRB 060210: Optical Observations
- GRB 060210: Refined analysis of the Swift-BAT burst
- GRB060210: Swift XRT Refined Analysis
- GRB 060210 : Xinglong and Lulin optical limit
- GRB060210: Gemini absorption spectroscopy
- GRB 060210: optical evolution
- GRB 060210: candidate afterglow
- GRB 060210: Swift detection of a burst