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"21 results found.
- GRB 240225B: Swift-XRT afterglow detection
- GRB 240225B: Glowbug gamma-ray detection
- GRB 240225B: further SAO RAS optical observations
- GRB 240225B: Swift ToO observations
- Konus-Wind detection of GRB 240225B (long)
- GRB 240225B: VLT/X-shooter redshift
- GRB 240225B : MITSuME Akeno optical afterglow candidate detection
- GRB 240225B: 3.6m DOT observation
- GRB 240225B: WINTER near-IR observations and upper limits
- GRB 240225B: SAO RAS optical observations
- GRB 240225B: Mondy afterglow observations
- GRB 240225B: Liverpool Telescope afterglow observations
- GRB 240225B: Liverpool Telescope optical afterglow observations
- GRB 240225B: NOT optical observations
- GRB 240225B: Nanshan/HMT optical afterglow detection
- GRB 240225B: CALET Gamma-Ray Burst Monitor detection
- GRB 240225B: Swift-XRT observations
- GRB 240225B: GOTO detection of a candidate optical afterglow
- GRB 240225B: AstroSat CZTI detection
- GRB 240225B: Tiled Swift observations
- GRB 240225B: MAXI/GSC detection