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 220403B: GRANDMA observations
- GRB 220403B: Swift/UVOT Detection
- GRB 220403B: 1.3m DFOT Optical upper limit
- GRB 220403B: Mondy optical upper limit
- GRB 220403B: 1.5m OSN optical observation
- GRB 220403B: Kitab optical observations
- GRB 220403B: Swift-BAT refined analysis
- GRB 220403B: NUTTelA-TAO / BSTI Early Optical Limits (Preliminary)
- GRB 220403B: Fermi GBM detection
- GRB 220403B: Swift-XRT refined Analysis
- GRB 220403B: LBT observations
- Swift GRB 220403B: Global MASTER-Net observations report
- GRB 220403B: Nanshan/NEXT optical afterglow power-law decay
- GRB 220403B: optical detection by D50
- GRB 220403B: Swift detection of a burst with an optical counterpart