Skip to main content
New Announcement Feature, Code of Conduct, Circular Revisions. See news and announcements

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').

18 results found.

  1. Radio upper limits on the GRB 140703A with the GMRT
  2. GRB 140703A: AMI 15 GHz detection
  3. GRB 140703A: Swift/UVOT Upper Limits
  4. GRB 140703A: AAO optical observations
  5. GRB 140703A: VLA K-band detection
  6. GRB 140703A: CARMA 3mm detection
  7. GRB 140703A: P60 observations of a red, slowly-fading afterglow
  8. GRB 140703A: RATIR Optical and NIR Observations
  9. GRB 140703A: Fermi GBM detection
  10. GRB 140703A: Monte Agliale Observatory optical observations
  11. GRB 140703A: Swift-XRT refined Analysis
  12. GRB 140703A: Swift-BAT refined analysis
  13. Correction to GCN 16507: GRB 140703A!
  14. GRB 140703A: MASTER optical observations
  15. GRB 140703A: Enhanced Swift-XRT position
  16. GRB140703A: 10.4m GTC redshift
  17. GRB 140703A: BOOTES-2 and OSN optical observations
  18. GRB 140703A: Swift detection of a burst

Advanced

Download all Circulars as a .tar.gz archive:
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