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.
To navigate to a specific circular, enter the associated Circular ID (e.g. 'gcn123', 'Circular 123', or '123').
20 results found.
- GRB 201221D: near-infrared observation with LBT
- GRB 201221D: 3.6m DOT optical observations
- GRB 201221D: SMA submm observation
- GRB 201221D: MMT MMIRS detection of marginally extended source
- GRB 201221D: LCOGT upper limits
- GRB 201221D: Fermi GBM detection
- GRB 201221D: Swift-BAT refined analysis
- GRB 201221D: Archival PS1 Imaging of the Putative Host Galaxy
- Short GRB201221D: High Redshift from OSIRIS/GTC
- Konus-Wind detection of GRB 201221D (short)
- GRB 201221D: Swift/UVOT Upper Limits
- GRB 201221D: Lowell Discovery Telescope afterglow observations
- GRB 201221D: FRAM-ORM optical limit
- GRB 201221D: Swift-XRT refined Analysis
- Swift GRB 201221D: Global MASTER-Net observations report
- GRB 201221D: Enhanced Swift-XRT position
- GRB 201221D: Nanshan/NEXT early optical upper limit
- GRB 201221D: candidate optical counterpart from the NOT
- GRB 201221D: Prompt enhanced Swift-XRT position
- GRB 201221D: Swift detection of a bright short burst