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').
18 results found.
- AX J1846.4-0258: Swift-BAT refined analysis
- GRB 200801C: BOOTES-1 and BOOTES-2 optical limits
- Swift Detection of an SGR-like flare from AX J1846.4-0258
- Trigger 884906: Swift detection of MAXI J1631-479
- Trigger 878548: Swift detection of AX 1631.9-4752
- Swift detects a flare from AX 1631.9-4752
- Trigger 848584: Swift detection of AX 1631.9-4752
- Trigger 689353: Swift detection of a transient near Sgr A*
- Swift-BAT probable detection of an outburst from SGR J1819-1600 (AX J1818.8-1559)
- GRB 151027A: optical follow-up observations
- Swift trigger 649143 is not AX J1619.4-4945 or other astrophysical source
- Trigger 649143: Swift detection of AX J1619.4-4945
- Trigger 502024: Swift detection of KS 1741-293
- Swift detection of AX J1749.1-2639
- Swift-BAT Trigger #302454, correction of GCN notice, update on AX J1749.1-2639
- GRB 071017 - Swift XRT observations
- GRB 071017: a SHORT GRB detected by INTEGRAL
- IBAS GRB Alert # 2463: not a GRB