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').
21 results found.
- GRB 221009A X-ray light-curve and the indication of TeV light-curve
- GRB 201216C: VIRT optical observations
- Correction to GCN 29278: GRB 201216C XRT refined analysis
- GRB 201216C: Swift-XRT refined Analysis
- GRB 201216C: TSHAO, Terskol, Mondy optical upper limits
- GRB201216C: No significant detection in HAWC
- GRB 201216C: Liverpool Telescope First Hour Observations
- Konus-Wind detection of GRB 201216C
- GRB 201216C: Swift-BAT refined analysis
- GRB 201216C: VLT X-shooter spectroscopy and potential high redshift of a VHE-emitting GRB
- GRB 201216C: Fermi-LAT upper limit
- GRB 201216C: MAGIC detection in very high energy gamma rays
- GRB 201216C: AstroSat CZTI detection
- GRB 201216C: Fermi GBM detection
- GRB 201216C: Swift/UVOT Upper Limits
- GRB 201216C: FRAM-ORM afterglow confirmation
- GRB 201216C: Enhanced Swift-XRT position
- GRB 201216C: VLT afterglow candidate discovery
- GRB 201216C: Swift-XRT observations
- GRB 201216C: Fermi GBM Final Real-time Localization
- GRB 201216C: Swift detection of a burst