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').
14 results found.
- GRB 090404: Deep optical imaging and possible host association (correction)
- GRB 090404: Deep optical imaging and possible host association
- GRB 090404: millimeter detection
- GRB 090404: nIR observations at Calar Alto
- GRB 090404: GROND upper limits
- GRB 090404: further NOT observations
- Swift/UVOT observations of GRB090404
- GRB 090404: NOT observations
- GRB 090404: optical observations at BOOTES-3 and 1.5-m OSN
- GRB 090404: Swift-XRT Team refined analysis
- GRB 090404: Xinglong TNT optical Upper Limit
- GRB 090404: Swift-BAT refined analysis
- GRB 090404: Enhanced Swift-XRT position
- GRB 090404: Swift detection of a burst