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"13 results found.
- GRB 080210: Keck photometry
- VLA non-detection of GRB 080210
- GRB 080210: Swift/UVOT Refined Analysis
- GRB 080210: Hobby-Eberly Telescope Absorption Spectroscopy
- GRB 080210, Swift-BAT refined analysis
- GRB 080210: Super-LOTIS observations
- GRB 080210: Swift-XRT Refined Analysis
- GRB 080210: VLT redshift
- GRB 080210: Enhanced Swift-XRT position
- GRB 080210: Rapid PROMPT Detections
- GRB 080210: GOND detection in all bands and redshift upper limit
- GRB 080210: Swift detection of a burst with optical afterglow
- GRB 080210: TAROT La Silla observatory optical detection