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').

14 results found.

  1. GRB 160629A: 15 GHz detections and upper limits from AMI
  2. GRB 160629A: Mondy optical observations
  3. GRB 160629A: AbAO optical observations
  4. GRB 160629A: AbAO optical observations
  5. GRB 160629A: Swift/UVOT Upper Limits
  6. GRB 160629A: Swift-XRT afterglow detection
  7. GRB 160629A: Global MASTER Net Prompt OT observations
  8. GRB 160629A: Swift ToO observations
  9. Konus-Wind observation of GRB 160629A
  10. GRB 160629A: BTA and GTC redshift
  11. GRB 160629A: Fermi GBM observation
  12. GRB 160629A: SAO RAS independent OT detection
  13. GRB 160629A: TAROT Calern observatory optical detection
  14. GRB 160629A: a long GBB detected by INTEGRAL

Advanced

Download all Circulars as a .tar.gz archive:
Looking for U.S. government information and services? Visit USA.gov