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 211227A: Deep early CAHA 2.2m/CAFOS observation
- GRB 211227A: A possible short GRB with extended emission at z = 0.228?
- GRB 211211A - Gemini K-band detection
- GRB 181225A: CALET Gamma-Ray Burst Monitor detection
- GRB 060614: theoretical derivation of the redshift and need for deeper search of the host galaxy
- GRB060614 ATCA Radio Limits
- GRB 060614: SMARTS host galaxy observations
- GRB 060614: Detection of a Possible, Late-Time Rebrightening
- GRB 060614: redshift confirmation
- GRB 060614: Redshift
- GRB 060614: spectroscopy
- GRB 060614: pseudo-z from spectral parameters of the prompt emission
- Konus-Wind observation of GRB 060614
- The Unusually Long-Lived Afterglow of GRB 060614
- GRB 060614: optical observations
- GRB 060614, SMARTS optical/IR afterglow observation
- GRB060614: SSO 1m observations
- GRB060614: Watcher observation
- GRB 060614: Swift-BAT refined analysis
- GRB 060614: Swift/UVOT Observations
- GRB 060614: Swift detection of a burst with a bright optical and X-ray counterpart