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').
23 results found.
- GRB 210822A: CALET Gamma-Ray Burst Monitor detection
- GRB 210822A: CAHA 2.2m observations
- GRB 210822A: TSHAO continued optical observation
- GRB 210822A: VLA detection
- GRB 210822A: TSHAO optical observation
- GRB 210822A: Swift/UVOT Detection
- GRB 210822A: GROND observations
- GRB 210822A: Abbey Ridge Observatory optical afterglow observation
- GRB 210822A: Detection by GRBAlpha
- GRB 210822A: GECAM refined analysis
- Konus-Wind detection of GRB 210822A
- GRB 210822A: AstroSat CZTI detection
- GRB 210822A: NOT photometry and spectroscopy
- GRB 210822A: Swift-XRT refined Analysis
- GRB 210822A: Swift-BAT refined analysis
- GRB 210822A: Fermi-LAT detection
- GRB 210822A: Nanshan/NEXT optical observations
- GRB 210822A: Enhanced Swift-XRT position
- Swift GRB 210822A: Global MASTER-Net observations report
- GRB 210822A: RATIR Optical Detections
- GRB 210822A: KAIT Optical Afterglow Confirmation
- GRB 210822A: GECAM detection
- GRB 210822A: Swift detection of a burst with an optical afterglow