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').
22 results found.
- GRB 180418A: 15 GHz upper limits from AMI
- GRB 180418A: TAROT La Silla observatory early optical observations
- GRB 180418A: MITSuME Ishigakijima Optical Observation
- GRB 180418A : SQUEAN observations
- GRB 180418A: Further GROND observations
- GRB 180418A: Swift/UVOT Detection
- GRB 180418A: Continued RATIR Optical Observations
- GRB 180418A: Imaging of the optical afterglow with the 1.3 m DFOT and 3.6 m DOT in ARIES, India
- GRB 180418A GROND observations
- GRB 180418A: Xinglong TNT optical upper limit
- GRB 180418A: NOT optical observations
- GRB 180418A: Gemini-North imaging and spectroscopy
- GRB 180418A: Swift-BAT refined analysis
- GRB 180418A: 1.5m OSN optical observations
- GRB 180418A: Fermi GBM observation
- GRB 180418A: Swift-XRT refined Analysis
- GRB 180418A: RATIR Optical Observations
- GRB 180418A: Enhanced Swift-XRT position
- GRB 180418A: Swift-XRT observations
- GRB 180418A: LCO FTN afterglow confirmation
- GRB 180418A: KAIT Optical Afterglow Candidate
- GRB 180418A: Swift detection of a short burst