GCN Circulars
GCN Circulars are rapid bulletins submitted by and distributed to the community. 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').
Advanced Search
To narrow the search results, use advanced search syntax. This allows for specifying which circular field to search (submitter, subject, and/or body). For additional information, refer to the advanced search documentation.
Advanced Search Examples (click to copy):
subject:"Swift"body:"GRB"submitter:"Judith Racusin"12412 results found.
- GRB 080905A: Fermi Gamma-ray Burst Monitor detection
- GRB 080825C: Fermi GBM Spectral Analysis
- GRB080825C: Fermi-LAT observations
- GRB 080830: Fermi Gamma-ray Burst Monitor detection
- GRB080823: Fermi Gamma-ray Burst Monitor detection
- GRB 080824: Fermi Gamma Ray Burst Monitor detection
- GRB080825C: GLAST Burst Monitor detection
- SGR 0501+4516: Fermi GBM (formerly GLAST Burst Monitor) observations of three exceptionally intense outbursts
- GRB060908: optical observations
- GRB 060218: rebrightening
- GRB990705: No Evidence for Neutrino Signal
- GRB990705: Intriguing Positional Coincidences