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').
11 results found.
- GRB 220715B: VIRT Optical Upper Limit
- GRB 220715B: Swift-BAT refined analysis
- GRB 220715B: Fermi GBM detection
- GRB 220715B: Swift-XRT refined Analysis
- GRB 220715B: Swift/UVOT Upper Limits
- GRB 220715B: Enhanced Swift-XRT position
- GRB 220715B: BOOTES-network optical upper limits
- Swift GRB 220715B: Global MASTER-Net observations report
- GRB 220715B: Prompt enhanced Swift-XRT position
- GRB 220715B: Swift detection of a burst
- GRB 220715B: Fermi GBM Final Real-time Localization