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 120711A: ATCA 34GHz final observations (upper limit)
  2. GRB 120711A: INTEGRAL/SPI observations
  3. GRB 120711A: ATCA 34GHz further observations (upper limit)
  4. GRB 120711A: Fermi LAT Detection
  5. GRB 120711A: ATCA 34GHz upper limit
  6. GRB 120711A: Swift/UVOT Observations
  7. Konus-Wind observation of GRB 120711A
  8. GRB 120711A: Fermi LAT detection
  9. GRB 120711A: MASTER early OT detection
  10. GRB 120711A: Swift-XRT observations
  11. GRB 120711A Gemini-S likely redshift
  12. GRB 120711A: REM NIR early time detection
  13. GRB 120711A: GROND photometric redshift
  14. GRB 120711A: Fermi GBM observation
  15. GRB 120711A: MAXI/GSC detection
  16. GRB 120711A: a possible X-ray transient
  17. GRB 120711A: an bright long GRB detected with INTEGRAL
  18. GRB 120711A: ROTSE-III confirm of Optical Counterpart


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