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').
16 results found.
- GRB 060927: PROMPT Observations
- GRB 060927 : GAO 150cm telescope optical observation
- GRB 060927: Spectroscopic redshift z=5.6
- GRB 060927: pseudo-z from spectral parameters of the prompt emission
- GRB 060927: Swift/UVOT Optical Observations
- GRB 060927: Early color
- GRB 060927: Swift XRT Team refined analysis
- GRB 060927 optical limit
- GRB 060927, Swift-BAT refined analysis
- GRB 060927: Xinglong TNT optical observations
- GRB 060927, optical observation
- GRB 060927: Possible host galaxy (star?) in the SDSS
- GRB 060927 : Kiso optical observation
- GRB060927: Faulkes Telescope South observation
- GRB 060927: optical afterglow confirmation
- GRB 060927: Swift detection of a burst