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').
29 results found.
- GRB 210704A: Zeiss-1000/SAO-RAS optical observations
- GRB 210704A: classification as long GRB and redshift estimating
- GRB 210704A: Lowell Discovery Telescope Optical Observations
- GRB 210704A: Continued Gemini-North NIR K-band Detections
- GRB 210704A: INTEGRAL observations
- GRB 210704A: NOT optical observations and color change
- GRB210704A: Gemini near-infrared upper limits
- GRB 210704A: Assy optical afterglow upper limit
- GRB 210704A: OSIRIS/GTC Observations and Archival Detection of the Possible Host Galaxy
- GRB 210704A: Gemini-North Infrared Source Detection
- GRB 210704A: further TNG optical observations
- GRB 210704A: CAHA 2.2m telescope optical limit
- GRB 210704A: OAJ T80 multi-color detections
- GRB 210704A: OSIRIS/GTC spectroscopy
- GRB 210704A: CAHA 2.2m Afterglow Detection
- GRB 210704A: RATIR optical upper limits
- GRB 210704A: Swift/UVOT Upper Limits
- Konus-Wind detection of GRB 210704A
- GRB 210704A: TNG detection of the optical afterglow candidate
- GRB 210704A: Assy optical afterglow candidate
- GRB 210704A: DDOTI upper limit
- GRB 210704A: possible local hosts
- GRB 210704A: Fermi GBM detection
- GRB 210704A: Swift-XRT afterglow detection
- GRB 210704A: AstroSat CZTI detection
- GRB 210704A: Fermi-LAT detection
- GRB 210704A: Swift ToO observations
- GRB 210704A: AGILE/MCAL detection
- GRB 210704A: BALROG localization (Fermi Trigger 647120009 / GRB 210704815)