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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').

6 results found.

  1. GRB 240527B: Swift-XRT afterglow detection
  2. GRB 240527B: Fermi GBM Observation
  3. GRB 240527B: Fermi-LAT detection
  4. Fermi GRB 240527B: Global MASTER-Net observations report
  5. GRB 240527B: Fermi GBM Final Localization
  6. GRB 240527B: BALROG localization (Fermi Trigger 738511436 / GRB 240527586)

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Download all Circulars as a .tar.gz archive:
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