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').
25 results found.
- GRB 200613A: Host galaxy redshift from OSIRIS/GTC
- GRB 200613A: Continued CrAO optical observations
- GRB 200613A: CrAO optical observations
- GRB 200613A: R-band observations from HCT
- GRB 200613A: Further Liverpool Telescope observations
- GRB 200613A: continued Kitab optical observations
- GRB 200613A: SAO RAS optical observations
- GRB 200613A: Mondy optical observations
- GRB 200613A: Jet-break from Xinglong-2.16m optical observations
- GRB 200613A: CALET Gamma-Ray Burst Monitor detection
- GRB 200613A: MITSuME Akeno optical upper limits
- GRB 200613A: continued AbAO optical afterglow observations
- GRB 200613A: Continued Xinglong-2.16m optical observations
- GRB 200613A: Swift/UVOT Detection
- GRB 200613A: Xinglong-2.16m optical observations
- GRB 200613A: Liverpool Telescope observations
- GRB 200613A: OAJ Afterglow: Error in Coordinates
- GRB 200613A: Kitab and AbAO optical afterglow observations, host galaxy candidate
- GRB 200613A: Swift-XRT afterglow detection
- GRB 200613A: Candidate afterglow from OAJ
- Fermi GRB 200613A: Global MASTER-Net observations report
- GRB 200613A: Swift ToO observations
- GRB 200613A: Fermi-LAT detection
- GRB 200613A: Fermi GBM observation
- GRB 200613A: Fermi GBM Final Real-time Localization