Skip to main content
End of Swift Science Operations, CHIME Notices Unavailable During Upgrade. See news and announcements

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"

13 results found.

  1. Radio upper limit on the GRB 140713A with the GMRT
  2. GRB 140713A: AMI 15 GHz detection
  3. GRB 140713A: 10.4-m GTC deep optical observation
  4. GRB 140713A: CARMA mm detection
  5. GRB 140713A: Fermi GBM detection
  6. GRB 140713A: Swift-XRT refined Analysis
  7. GRB 140713A: Swift/UVOT Upper Limits
  8. GRB 140713A: NOT upper limits
  9. GRB 140713A : Xinglong TNT upper limit
  10. GRB 140713A: Enhanced Swift-XRT position
  11. GRB 140713A: Swift-BAT refined analysis
  12. GRB 140713A: T100 observations
  13. GRB 140713A: Swift detection of a burst

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

Looking for U.S. government information and services? Visit USA.gov