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GCN Circulars

GCN Circulars are rapid bulletins submitted by and distributed to the community. 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').
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"

11 results found.

  1. GRB 080804: GROND observations
  2. GRB 080804: ATCA Radio Observations
  3. GRB 080804: Swift-XRT Refined Analysis
  4. GRB 080804: Swift/UVOT Refined Analysis
  5. GRB 080804, Swift-BAT refined analysis
  6. GRB 080804: Enhanced Swift-XRT position
  7. GRB080804: Gemini South redshift confirmation
  8. GRB 080804: Faulkes Telescope South observations
  9. GRB 080804: UVES redshift
  10. GRB 080804: Swift detection of a burst with optical afterglow
  11. GRB 080804: ROTSE-III Detection of Optical Counterpart

Advanced

Download all Circulars as a .tar.gz archive (updated once a day):
Questions or comments?
Contact GCN directly.
Have you found a bug in GCN?
Open an issue.
Want to contribute code to GCN?
Get involved on GitHub.

gcn.nasa.gov

A service of the Astrophysics Science Division at NASA Goddard Space Flight Center

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