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').
8 results found.
- LIGO/Virgo S190426c: Lick/KAIT Follow-Up Observations
- GRB 050915: KAIT optical limit
- GRB 050915: IR Observations
- GRB 050915: Swift XRT refined analysis
- GRB 050915: Swift-BAT refined analysis
- GRB050915: P60 Optical Observations
- GRB 050915: ROTSE-III optical limits
- GRB 050915: Swift detection of a GRB