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"3820 results found.
- IPN localization of GRB000811
- GRB000607, A SHORT, HARD BURST
- GRB000424, optical observations
- IPN localization of GRB991226
- GRB 991106, LOTIS Optical Observations
- IPN/NFI error box for GRB991014
- IPN error box for GRB990915 (=BATSE 7766)
- GRB990806 UBVRIJHK observations
- GRB990704, optical observations
- IPN error box for GRB990527
- IPN localization for GRB990506
- GRB 990316, Optical observations
- GRB990308, Possible new SGR~0209+70
- GRB990123, early optical counterpart detection
- GRB 981226 Optical Observations
- GRB 981226 optical observations
- GRB980326 IPN annulus
- Near-IR follow-up on GRB 971227
- Optical Observations of the GRB 971227 field
- GRB971227: Further CAHA R-band images