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.
To navigate to a specific circular, enter the associated Circular ID (e.g. 'gcn123', 'Circular 123', or '123').
19 results found.
- GRB 220527A: A BdHN I with a clear UPE phase
- GRB 220527A: MITSuME Akeno continued optical observation
- GRB 220527A: Lick 3m Optical Observations
- Konus-Wind observation of GRB 220527A
- GRB 220527A: AST3-3 Yaoan Optical Observation
- GRB 220527A: REM optical/NIR observations
- GRB 220527A: VLT/X-shooter spectroscopic redshift
- GRB 220527A: MeerLICHT afterglow observations
- GRB 220527A: NOT optical photometry and spectroscopic redshift
- GRB 220527A: AstroSat CZTI detection
- GRB 220527A: CALET Gamma-Ray Burst Monitor detection
- GRB 220527A: MITSuME Akeno optical observation
- GRB 220527A: Swift/UVOT detection
- GRB 220527A: Swift-XRT afterglow detection
- GRB 220527A: Fermi GBM Observation
- GRB 220527A: Swift ToO observations
- GRB 220527A: Fermi-LAT detection
- GRB 220527A: Fermi GBM Final Localization
- GRB 220527A: AGILE detection