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').
23 results found.
- GRB 130420A: Continued Skynet/GORT Observations/Detections
- GRB 130420A: Continued RATIR Optical and NIR Observations
- GRB 130420A: ROTSE-III data analysis
- GRB 130420A: Continued RATIR Optical and NIR Observations
- GRB 130420A: Redshift from 10.4m GTC
- GRB 130420A: Early RAPTOR Simultaneous Multi-Color Observations
- GRB 130420A: Continued RATIR Optical and NIR Observations
- GRB 130420A: Fermi GBM observation
- GRB 130420A: ISON-NM optical observations
- Skynet/GORT observations of GRB130420A
- GRB 130420A: Swift/UVOT Detection
- GRB 130420A: Swift-XRT refined Analysis
- GRB 130420A, Swift-BAT refined analysis
- GRB 130420A: GMG optical observation
- GRB 130420A: Enhanced Swift-XRT position
- GRB130420A : Xinglong TNT optical upper limit
- GRB 130420A: Weihai Optical Observations
- GRB 130420A: T21 optical observations
- GRB 130420A: RATIR Optical and NIR Observations
- GRB 130420A: PAIRITEL NIR detections
- GRB 130420A: ROTSE-III Detection of Optical Counterpart
- GRB 130420A: Swift detection of a burst with an optical counterpart
- GRB 130420A: Faulkes Telescope North candidate