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 230818A: further radio observations with the VLA
- Konus-Wind detection of GRB 231215A
- GRB 230818A: radio observation with the VLA
- GRID detection of GRB 230818A
- GRB 230818A: Swift-BAT refined analysis
- Konus-Wind detection of GRB 230818A
- GRB 230818A: Fermi GBM Observation
- GRB 230818A: Nickel and KAIT telescope optical observations
- GRB 230818A: SAO RAS 6-m telescope spectroscopy
- GRB 230818A: further SAO RAS Zeiss-1000 observations
- GRB 230818A: AKO Upper Limit
- GRB 230818A: AstroSat CZTI detection
- GRB 230818A: Tautenburg observations
- GRB 230818A: Leavitt Observatory upper limit
- GRB 230818A: Swift-XRT refined Analysis
- GRB 230818A: Bassano Bresciano Observatory optical observations
- GRB 230818A: KGO RC-25 optical observations
- GRB 230818A: Swift/UVOT Detection
- GRB 230818A: NOT photometry and spectroscopy
- GRB 230818A: Enhanced Swift-XRT position
- GRB 230818A: SAO RAS Zeiss-1000 observations
- Fermi GRB 230818A: Global MASTER-Net observations report
- GRB 230818A: GOTO optical afterglow detection
- GRB 230818A: Swift detection of a burst
- GRB 230818A: Fermi GBM Final Real-time Localization