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"20 results found.
- GRB 120326A, the review of the sky area in plate archives
- GRB 120326A: HCT optical observations
- GRB 120326A: EVLA Observations
- GRB 120326A: Bassano Bresciano Observatory optical observations
- GRB 120326A: Fermi GBM Observation
- GRB 120326A: PAIRITEL NIR Observations
- GRB 120326A: LOAO R-band Observations
- GRB 120326A : SMA submm observation
- GRB 120326A: Maisoncelles Observatory optical observations
- GRB 120326A: optical observation of GMG
- GRB 120326A : LOT optical observation
- GRB 120326A: T17 optical observations
- GRB 120326A: GTC redshift
- GRB 120326A: Swift/UVOT Detection
- GRB 120326A: Optical observations at Crni Vrh
- GRB 120326A: Enhanced Swift-XRT position
- Skynet/Dolomiti Observations of GRB120326A
- GRB 120326A: TAROT Calern observatory afterglow optical detection
- GRB 120326A: ROTSE-III Optical Limits
- GRB 120326A: Swift detection of a burst