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').
43 results found.
- GRB 210619B: Maidanak and Assy optical observations, broken power law parametrization
- GRB 210619B: ALMA detection
- GRB 210619B: JCMT SCUBA-2 sub-mm observations
- GRB 210619B: Sayan observatory 1.6-m telescope observations
- GRB 210619B: Deep CAHA 2.2m detection and late-time light curve behavior
- GRB 210619B: ASIM observation
- GRB 210619B: Even further SAO RAS optical observations
- GRB 210619B: Mini-MegaTORTORA early optical observations
- GRB 210619B: Abbey Ridge Observatory optical afterglow observation
- GRB 210619B: SPI-ACS/INTEGRAL observations
- GRB 210619B: Further SAO RAS optical observations
- GRB 210619B: possibility of lensed visible afterglow?
- GRB 210619B: AbAO optical observations
- GRB 210619B: NOT optical observations
- GRB 210619B: 1.5m OSN optical observation
- GRB 210619B: iTelescope optical afterglow observation
- GRB 210619B: SAO RAS optical observations
- GRB 210619B: SEDM Optical Observations
- GRB 210619B: TNG NIR observations of the afterglow
- GRB 210619B: REM optical/NIR afterglow detection
- GRB 210619B: GIT optical follow-up and confirmation of jet-break
- GRB 210619B: CALET Gamma-Ray Burst Monitor detection
- GRB 210619B: SRG/ART-XC detection
- GRB 210619B: Swift-BAT refined analysis
- GRB 210619B: steepening of the decay observed at the D50
- GRB 210619B: Liverpool Telescope First Hour Observations
- GRB 210619B: Fermi GBM detection
- GRB 210619B: Swift/UVOT Detection
- GRB 210619B: Xinglong TNT optical observations
- Konus-Wind detection of GRB 210619B
- GRB 210619B: CAHA 2.2m photometric monitoring
- GRB 210619B: Liverpool Telescope r'-band observations
- GRB 210619B: KAIT Optical Detection
- GRB 210619B: Redshift from OSIRIS/GTC
- GRB 210619B: Liverpool telescope imaging of a red afterglow
- GRB 210619B: Fermi-LAT detection
- GRB 210619B: Swift-XRT refined Analysis
- GRB 210619B: SARA-KP 0.9m Optical Afterglow Detection
- GRB 210619B: Enhanced Swift-XRT position
- GRB 210619B: iTelescope T18 detection
- GECAM detection of GRB 210619B
- GRB 210619B: Ondrejov D50 detection
- GRB 210619B: Swift detection of a bright burst and optical counterpart