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').
15 results found.
- GRB 200519A: CALET Gamma-Ray Burst Monitor detection
- GRB 200519A: R-band follow-up from HCT
- GRB 200519A: Swift-BAT refined analysis
- GRB 200519A: Insight-HXMT/HE detection
- GRB 200519A: Swift/UVOT Detection
- GRB 200519A: GROWTH-India optical follow-up
- GRB 200519A: AstroSat CZTI detection
- Swift GRB 200519A: Global MASTER-Net observations report
- GRB 200519A: 1.3m DFOT Optical Afterglow Detection
- GRB 200519A: Swift-XRT refined Analysis
- GRB 200519A: Enhanced Swift-XRT position
- GRB 200519A: BOOTES-3/YA optical counterpart observations
- GRB 200519A: LCO Optical Afterglow Detection
- GRB 200519A: iTelescope optical afterglow detection
- GRB 200519A: Swift detection of a burst with an optical afterglow