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').
24 results found.
- GRB 180728A: discovery of the associated supernova
- GRB 171205A: Likely association with low-z spiral galaxy
- GRB 130427A: Spectroscopic detection of the SN from the 10.4m GTC
- GRB 120422A: Additional Gemini observations and Keck/LRIS spectroscopy
- GRB 101225A Late-time emission observed by Swift-BAT
- Redshift solution(s) for GRB101213A from Swift-XRT data
- GRB 100925A: Nearby DSS Source - SN-GRB or new Galactic transient?
- GRB 100418A: Possible Evidence for a Supernova
- GROND observations of GRB100316D/SN2010bh
- Emerging Supernova in the Afterglow of GRB 100316D
- GRB 100316D: Spectroscopic Discovery of a Supernova from Magellan
- GRB 100316D: ATCA radio observations
- GRB 100316D: Possible Supernova
- GRB 100316D: Pre-burst emission measured by BAT
- GRB 100316D: Further Gemini observations
- GRB 100316D: Swift/UVOT Observations
- GRB 100316D: Swift XRT enhanced position and further refined analysis
- Tentative redshift of GRB100316D from X-ray data
- GRB 100316D: GROND Detection of the Optical/NIR Afterglow Candidate
- GRB 100316D: Gemini/GMOS and VLT/X-shooter observations
- GRB 100316D: VLT/X-shooter observations
- GRB 100316D: Swift-BAT refined analysis
- GRB 100316D: Swift XRT refined analysis
- GRB 100316D: Swift detection of a burst