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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').

16 results found.

  1. GRB 200410A: Liverpool Telescope First Hour Observations
  2. GRB 200410A: Optical upper limit
  3. GRB 200410A: CALET Gamma-Ray Burst Monitor detection
  4. GRB 200410A: Swift-BAT refined analysis
  5. IceCube-200410A: No significant detection in HAWC
  6. IceCube-200410A : Upper limits from Insight-HXMT/HE observations
  7. IceCube-200410A: Upper limits from a search for additional neutrino events in IceCube
  8. Fermi-LAT Gamma-ray Observations of IceCube-200410A
  9. IceCube-200410A: Upper limits from Fermi-GBM Observations
  10. IceCube-200410A: Possible associated excess in INTEGRAL SPI-ACS prompt observation
  11. IceCube-200410A - IceCube observation of a high-energy neutrino candidate event
  12. GRB 200410A: Swift/UVOT Detection
  13. GRB 200410A: Swift-XRT refined Analysis
  14. GRB 200410A: Enhanced Swift-XRT position
  15. GRB 200410A: Ondrejov D50 afterglow confirmation
  16. GRB 200410A: Swift detection of a burst with a possible optical counterpart


Download all Circulars as a .tar.gz archive:
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