Skip to main content
Introducing Einstein Probe, Astro Flavored Markdown, and Notices Schema v4.0.0. 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. GRB 160601A: 15 GHz upper limits from AMI
  2. GRB 160601A: AbAO optical observations
  3. GRB 160601A: Discovery Channel Telescope Limits
  4. GRB 160601A: Swift/UVOT Upper Limits
  5. GRB 160601A: MITSuME Akeno optical upper limits
  6. GRB 160601A: Swift-BAT refined analysis
  7. GRB 160601A: GTC observations confirming transient source decay
  8. GRB 160601A: Mondy optical observations, photometry of NOT sources
  9. GRB160601A: Kanata Telescope I- and Ks-bands upper limits
  10. GRB160601A: NOT afterglow confirmation
  11. GRB 160601A: Swift-XRT refined Analysis
  12. GRB160601A: NOT detection of an afterglow candidate
  13. GRB 160601A: Enhanced Swift-XRT position
  14. GRB 160601A: Mondy optical observations
  15. GRB 160601A: MITSuME Okayama Ks-band upper-limit
  16. GRB 160601A: MITSuME Okayama upper limits
  17. GRB 160601A: MASTER-Net observations
  18. GRB 160601A: Swift detection of a short hard burst

Advanced

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