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').
27 results found.
- GRB 160303A: GTC imaging of possible host galaxy
- GRB 160303A: X-shooter spectroscopy
- GRB 160303A: Continued optical monitoring from NOT
- GRB 160303A: JCMT SCUBA-2 sub-mm observation
- GRB160303A: further GROND observations
- GRB 160303A: 9.8 GHz VLA upper limit
- GRB 160303A, Swift-BAT refined analysis
- GRB 160303A: MMT Optical Detection
- GRB 160303A: Continued RATIR Optical and NIR Observations
- GRB 160303A: GROND Optical Detection
- GRB 160303A: Observations from T150 OSN
- GRB 160303A: VLT/FORS2 afterglow obervations
- GRB 160303A: BOAO R-band Detection
- GRB 160303A: McDonald 2.1m CQUEAN Detection
- GRB 160303A SMA observation
- GRB 160303A iTelescope observation
- GRB 160303A: Swift-XRT refined Analysis
- GRB 160303A: Optical observations from the NOT
- GRB 160303A: Swift/UVOT Detection
- GRB 160303A: RAPTOR Observations During Gamma-Ray Emitting Interval
- GRB 160303A: Enhanced Swift-XRT position
- GRB 160303A: RATIR Optical and NIR Afterglow Detection
- GRB 160303A: MITSuME Akeno optical upper limits
- GRB 160303A: LCOGT-FTN optical observations
- GRB 160303A: MITSuME Okayama upper limits
- GRB 160303A: ISON-NM early optical early limits
- GRB 160303A: Swift detection of a burst, possibly short