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"121 results found.
- GRB 060312: Refined analysis of the Swift-BAT burst
- GRB 060223B: Swift-BAT refined analysis
- GRB 060223: Swift-BAT refined analysis
- GRB 060115: Refined analysis of the Swift-BAT burst
- H11603: An X-ray flare from V4641 Sgr, or a possible XRF
- HETE/IPN localization of GRB040403A (=H3143, a long burst) and GRB040403B(=H3144, a short/hard burst)
- SGR 1806-20 bursts with INTEGRAL and IBAS announcement on Soft Gamma-Ray Repeaters
- IPN detection of continued activity from SGR1806-20
- IPN triangulation of GRB030101 (two large error boxes)
- Detection of activity from SGR 1900+14 with the RXTE/PCA
- RXTE Observations of SGR 1900+14
- The X-ray Flash 011030 ('GRB 011030')
- SGR 1900+14 : RXTE observations
- Further Optical Observations of GRB 010324
- Optical Observations of GRB 010324
- GCN resumes full operations
- Chandra observation of the X-ray afterglow of GRB991216
- GRB 990506, Optical Observations
- GRB 990506: Limits on the possible optical transient
- GRB990308 (Trig. 7457), optical observations
- GRB 980703: BATSE Observations