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').
Advanced Search
To narrow the search results, use advanced search syntax. This allows for specifying which circular field to search (submitter, subject, and/or body). For additional information, refer to the advanced search documentation.
Advanced Search Examples (click to copy):
subject:"Swift"body:"GRB"submitter:"Judith Racusin"14 results found.
- GRB 160629A: 15 GHz detections and upper limits from AMI
- GRB 160629A: Mondy optical observations
- GRB 160629A: AbAO optical observations
- GRB 160629A: AbAO optical observations
- GRB 160629A: Swift/UVOT Upper Limits
- GRB 160629A: Swift-XRT afterglow detection
- GRB 160629A: Global MASTER Net Prompt OT observations
- GRB 160629A: Swift ToO observations
- Konus-Wind observation of GRB 160629A
- GRB 160629A: BTA and GTC redshift
- GRB 160629A: Fermi GBM observation
- GRB 160629A: SAO RAS independent OT detection
- GRB 160629A: TAROT Calern observatory optical detection
- GRB 160629A: a long GBB detected by INTEGRAL