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.
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').
9625 results found.
- Discovery of a new SGR source, SGR1627-41
- SGR 1900+14
- 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
- Untitled
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- GRB 971024: USNO Observations
- Untitled
- Possible new SGR from US Naval Observatory
- RXTE Observations of SGR 1814-13