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').
17 results found.
- GRB 070724: Closer association with DSS source
- GRB 051221: Redshift from Gemini
- GRB 051221: Continued fading of optical afterglow
- GRB 051221B: BOOTES optical observations.
- GRB 051221: Discovery of fading optical afterglow
- GRB 051221: Swift XRT refined analysis
- GRB 051221: Swift/UVOT upper limits
- GRB 051221: Possible nearby cluster
- GRB 051221: No variability in Gemini data
- GRB 051221: Correction to GCN #4368
- GRB 051221: Gemini observations
- GRB 051221: Improved astrometry of the IR counterpart
- GRB051221: K-band source
- GRB 051221: XRT position
- GRB 051221: Refined analysis of the Swift-BAT short hard burst
- GRB 051221: IR Observations at GRB+1hr
- GRB 051221: Swift detection of a bright short burst