GCN Circulars
GCN Circulars are rapid astronomical bulletins submitted by and distributed to community members worldwide. They are used to share discoveries, observations, quantitative near-term predictions, requests for follow-up observations, or future observing plans related to high-energy, multi-messenger, and variable or transient astrophysical events. See the documentation for help with subscribing to or submitting Circulars.
To navigate to a specific circular, enter the associated Circular ID (e.g. 'gcn123', 'Circular 123', or '123').
17435 results found.
- Optical observation of SGR 1806-20 at the 6-m SAO telescope
- Probable SGR or Short Duration GRB Detected by HETE
- Dramatic Increase in the Rate of X-ray Bursts Reported by HETE
- Possible burst from SGR1806-20
- IPN detection of SGR1900+14
- X-ray precursors to the large flare from SGR 1900+14
- SGR 1900+14: No evidence of extended X-ray emission
- SGR 1900+14 : RXTE observations
- BeppoSAX/NFI Follow-up Observation of SGR 1900+14
- SGR1900+14
- SGR 1900+14: Correction to GCN 1049
- Millimeter observation of SGR 1900+14
- SGR 1900+14: Detection of extended X-ray emission
- Chandra Observations of SGR 1900+14
- SGR 1900+14, Chandra observations
- Chandra Observations of SGR 1900+14
- SGR1900+14, I-band observations
- SGR 1806-20 burst activity
- BATSE GRB trigger criteria
- X-ray/GRB 1SAX J0835.9+5118, BATSE Observation
- GRB990308 not a new SGR
- GRB990308, Possible new SGR~0209+70
- SGR1900+14, BeppoSAX-GRBM observations
- SGR1627-41
- SGR1627-41, RXTE/ASM observations
- Reduced error box of SGR 1627-41
- SGR 1627-41
- Discovery of a new SGR source, SGR1627-41
- SGR 1900+14
- SGR1900+14
- SGR1900+14
- BATSE on-board GRB trigger change
- Untitled
- Possible new SGR from US Naval Observatory
- RXTE Observations of SGR 1814-13