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"12 results found.
- GRB050124: Possible Host Galaxy
- GRB 050124 : Kiso Optical limit
- GRB 050726, SMARTS optical/IR observations
- GRB 050124: Radio Observations
- GRB 050124: K-band afterglow observations
- GRB 050124: NIR afterglow confirmed with Keck/NIRC
- GRB 050124, SMARTS optical/IR observations
- GRB 050124 I-band observation
- GRB 050124: NIR Candidates from Keck/NIRC
- GRB050124,optical observation
- GRB 050124 : Lulin R-band follow-up observation
- GRB 050124: Swift XRT Detection of X-ray Afterglow Emission