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"17 results found.
- GRB 060512: Keck Redshift
- GRB 060512: reanalysis of optical spectra
- GRB 060512: TNG optical spectroscopy
- GRB 060512: TAROT optical observation
- VLT optical spectroscopy of GRB 060512
- Swift/UVOT observations of GRB060512.
- GRB 060512: Subaru NIR observation
- GRB060512: Swift XRT Team refined analysis
- GRB 060512: 1.54m Kuiper Observations
- GRB 060512: Detection of NIR afterglow
- GRB 060512: P60 Observations
- GRB 060512: Swift-BAT Refined Analysis
- GRB 060512: optical decay
- GRB 060512: REM NIR observations
- GRB060512 Name Correction: LT Afterglow detection
- GRB060512: Liverpool Telescope Afterglow detection
- GRB 060512: Swift detection of a burst with an optical afterglow