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"11835 results found.
- GRB 980613: Spectroscopy of the host galaxy
- GRB 981226 optical observations
- GRB981226, BeppoSAX-NFI follow-up
- GRB 981220: BeppoSAX/GRBM results
- GRB 981220: RXTE/ASM and BeppoSAX/GRBM results
- GRB 980923 BATSE Observations
- GRB980703 optical photometry
- GRB 980703: BATSE Observations
- GRB980703: LOTIS observation at early times
- GRB980519 observation report
- GRB980703 optical followup
- Radio observations of SGRs
- GRB 980613: BATSE Observations
- Discovery of a new SGR source, SGR1627-41
- SGR1900+14
- SGR1900+14
- BATSE on-board GRB trigger change
- GRB 980519 Optical Observations
- GRB980519 BATSE Observations
- GRB970519, optical follow-up at Schmidt Calern
- GRB980519 optical observations
- GRB 980519 Optical Observations
- GRB980519, BeppoSAX-WFC updated position
- GRB980519, BeppoSAX-WFC position
- GRB 980425 Radio Light Curve
- GRB980425 BATSE observations
- GRB 980329 ROSAT observation
- GRB980329 optical observations
- GRB980329 optical observations
- GRB980329 optical observations
- GRB 971227: Optical Observations
- GRB971227: LOTIS observations
- GRB 971214: EUVE Observations
- GRB 971024: USNO Observations
- Possible new SGR from US Naval Observatory